Classification
Sites de découverte 432 sites géolocalisés
Répartition
Principaux pays
Formations géologiques
Distribution temporelle
Campanien
(83.6–72.2 Ma)
2
Cénomanien
(100.5–93.9 Ma)
2
Albien
(113.2–100.5 Ma)
4
Aptien
(121.4–113.2 Ma)
3
Barrémien
(125.77–121.4 Ma)
6
Valanginien
(137.05–132.6 Ma)
4
Berriasien
(143.1–137.05 Ma)
8
Kimméridgien
(154.8–149.2 Ma)
3
Oxfordian
(161.5–154.8 Ma)
5
Bathonien
(168.2–165.3 Ma)
10
Bajocien
(170.9–168.2 Ma)
1
Aalénien
(174.7–170.9 Ma)
3
Toarcien
(184.2–174.7 Ma)
23
Pliensbachien
(192.9–184.2 Ma)
32
Sinémurien
(199.5–192.9 Ma)
95
Hettangien
(201.4–199.5 Ma)
80
Rhétien
(205.7–201.4 Ma)
39
Norien
(227.3–205.7 Ma)
94
Carnien
(237–227.3 Ma)
16
Anisien
(246.7–241.464 Ma)
1
Olénékien
(249.9–246.7 Ma)
1
Espèces (60)
Agialopous wyomingensis
227 Ma
Grallator andeolensis
227 Ma
Grallator angustidigitus
201 Ma
Grallator anietangensis
175 Ma
Grallator crassidigitus
201 Ma
Grallator cursorius
227 Ma
Grallator damanei
193 Ma
Grallator deambulator
201 Ma
Grallator digitigradus
201 Ma
Grallator emeiensis
126 Ma
Grallator graciosus
201 Ma
Grallator lacunensis
193 Ma
Grallator lambereshei
193 Ma
Grallator leribeensis
193 Ma
Grallator lescurei
201 Ma
Grallator limosus
201 Ma
Grallator matsiengensis
193 Ma
Grallator minimus
227 Ma
Grallator minor
227 Ma
Grallator mokanametsongensis
201 Ma
Grallator molapoi
193 Ma
Grallator morijensis
193 Ma
Grallator moshoeshoei
193 Ma
Grallator olonensis
206 Ma
Grallator palustris
193 Ma
Grallator pingchuanensis
168 Ma
Grallator princeps
201 Ma
Grallator rapidus
201 Ma
Grallator rectilineus
227 Ma
Grallator sauclierensis
201 Ma
Grallator socialis
227 Ma
Grallator ssatoi
152 Ma
Grallator tenuis
237 Ma
Grallator tuberosus
237 Ma
Grallator variabilis
206 Ma
Grallator yangi
126 Ma
Grallator yemiaoxiensis
171 Ma
Plastisauropus ingens
201 Ma
Synonymes (12)
Aetonychopus
subjective synonym of Grallator
Agialopous
subjective synonym of Grallator
Chongqingpus
subjective synonym of Grallator
Chongqingpus microiscus
nomen dubium, species not entered Grallator
Chuanchengpus
subjective synonym of Grallator
Chuanchengpus wuhuangensis
nomen dubium, species not entered Grallator
Grallator anserinum
nomen dubium, species not entered Grallator
Kainotrisauropus
subjective synonym of Grallator
Plastisauropus
subjective synonym of Grallator
Platysauropus
subjective synonym of Grallator
Prototrisauropus
subjective synonym of Grallator
Qemetrisauropus
subjective synonym of Grallator
Images 5
Bibliographie
Description originale
E. Hitchcock. 1858. Ichnology of New England. A Report on the Sandstone of the Connecticut Valley, Especially its Fossil Footmarks, Made to the Government of the Commonwealth of Massachusetts
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Bibliographie (180)
T. Blakesley, P. E. dePolo, and D. A. Ross, N. D. L. Clark, S. L. Brusatte. 2025. Small theropod-dominated dinosaur footprint assemblages in the Middle Jurassic Valtos Sandstone and Kilmaluag Formations on the Isle of Skye, Scotland. Royal Society Open Science 12(9):251016:1-57
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M. Yurac, M. Belvedere, and C. Salazar, J. Méndez, C. Meyer. 2025. Upper Jurassic dinosaur tracks from the Majala Formation in the Huatacondo area (Tarapacá Basin, Chile): reappraisal of known localities and new tracksite discoveries. Swiss Journal of Palaeontology 144(1):72:1-25
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C. Bennett, A. R. C. Milner, and J. D. Harris. 2023. A glimpse through time: preliminary report of the Andre’s Alcove Tracksite, Lower Jurassic Navajo Sandstone, Glen Canyon National Recreation Area, Utah. Curiosity: Interdisciplinary Journal of Research and Innovation
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Y. Li, H. Yao, and W. J. Foster, L. Xing, C. Wang, A. Tahir, J. Khan, Z. An, H. Zhao, J. Wang. 2022. [First discovery of Middle Jurassic theropod trackways in Changdu region, eastern Tibet of China]. Earth Science–Journal of China University of Geosciences 47(11):4223-4245
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E. M. Bordy. 2021. Darting towards Storm Shelter: a minute dinosaur trackway from southern Africa. South African Journal of Science 117(3/4):9145:1-11
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H. Klein and S. G. Lucas. 2021. The Triassic Tetrapod Footprint Record. New Mexico Museum of Natural History & Science Bulletin 83:1-194
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G. Leonardi and I. d. S. Carvalho. 2021. Dinosaur Tracks from Brazil: A Lost World of Gondwana
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H. Li, C. Peyre de Fabrègues, and S. Bi, Y. Wang, X. Xu. 2021. The largest theropod track site in Yunnan, China: a footprint assemblage from the Lower Jurassic Fengjiahe Formation. PeerJ 9:e11788:1-32
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M. Abrahams, E. M. Bordy, and F. Knoll. 2020. Hidden for one hundred years: a diverse theropod ichnoassemblage and cross- sectional tracks from the historic Early Jurassic Tsikoane ichnosite (Clarens Formation, northern Lesotho, southern Africa). Historical Biology
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M. Abrahams, L. Sciscio, and M. Reid, T. Haupt, E. M. Bordy. 2020. Large tridactyl dinosaur tracks from the Early Jurassic of southern Gondwana – uppermost Elliot Formation, Upper Moyeni, Lesotho. Annales Societatis Geologorum Poloniae 90:1-26
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E. M. Bordy, A. Rampersadh, and M. Abrahams, M. G. Lockley, H. V. Head. 2020. Tracking the Pliensbachian-Toarcian Karoo firewalkers: trackways of quadruped and biped dinosaurs and mammaliaforms. PLoS One 15(1):e0226847:1-36
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L. Xing, M. G. Lockley, and T. Du, L. Zhang, H. Klein, A. Romilio, W. S. Persons, K. Wang, Z. Li, X. Wan. 2020. Dinosaur tracks from the Jurassic-Cretaceous boundary Tuchengzi Formation (Hebei Province, China) used as building stones in the Chengde imperial summer resort: age, ichnology, and . Cretaceous Research 107
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A.R. Fiorillo, Y. Kobayashi, and P. J. McCarthy, T. Tanaka, R. S. Tykoski, Y.-N. Lee, R. Takasaki, J. Yoshida. 2019. Dinosaur ichnology and sedimentology of the Chignik Formation (Upper Cretaceous), Aniakchak National Monument, southwestern Alaska; further insights on habitat preferences of high-latitude hadrosaurs. PLoS ONE 14(19):e0223471:1-19
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D.-Q. Li, L.-D. Xing, and M. G. Lockley, A. Romilio, J.-T. Yang, L.-F. Li. 2019. The first theropod tracks from the Middle Jurassic of Gansu, northwest China: new and rare evidence of quadrupedal progression in theropod dinosaurs. Journal of Palaeogeography 8:10:1-11
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J.-D. Moreau, E. Fara, and D. Néraudeau, G. Gand. 2019. New Hettangian tracks from the Causses Basin (Lozère, southern France) complement the poor fossil record of earliest Jurassic crocodylomorphs in Europe. Historical Biology 31(3):341-352
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L. Xing, M. G. Lockley, and K. Tong, G. Peng, A. Romilio, H. Klein, W. S. Persons, Y. Ye, S. Jiang. 2019. A diversified dinosaur track assemblage from the Lower Cretaceous Xiaoba Formation of Sichuan Province, China: implications for ichnological database and census studies. Cretaceous Research 96:120-134
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G. Gand, E. Fara, and C. Durlet, J.-D. Moreau, G. Caravaca, L. Baret, D. André, R. Lefillatre, A. Passet, M. Wiénin, J.-P. Gély. 2018. Les pistes d’archosauriens: Kayentapus ubacensis nov. isp. (théropodes) et crocodylomorphes du Bathonien des Grands-Causses (France). Conséquences paléo-biologiques, environnementales et géographiques [Archosaurian trackways: Kayentapus ubacensis nov. isp. (theropods) and crocodylomorphs from the Bathonian of the Grands-Causses (France). Paleobiological, environmental and geographical implications]. Annales de Paléontologie 104(3):183-216
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K. S. Kim, J. D. Lim, and M. G. Lockley, L. Xing, S. J. Ha, C. B. Kim, I. S. Paik, J. H. Ahn, S. C. Mun. 2018. First reports of a distinctive theropod track assemblage from the Jinju Formation (Lower Cretaceous) of Korea provides strong correlations with China. Cretaceous Research 81:26-35
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R. Stanford, M. G. Lockley, and C. Tucker, S. J. Godfrey, S. M. Stanford. 2018. A diverse mammal-dominated, footprint assemblage from wetland deposits in the Lower Cretaceous of Maryland. Scientific Reports 8(1):741:1-12
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L. Xing, M. G. Lockley, and A. Romilio, H. Klein, J. Zhang, H. Chen, J. Zhang, M. E. Burns, X. Wang. 2018. Diverse sauropod-theropod-dominated track assemblage from the Lower Cretaceous Dasheng Group of Eastern China: testing the use of drones in footprint documentation. Cretaceous Research 84:588-599
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T. Zouheir, A. Hminna, and H. Klein, A. Lagnaoui, H. Saber, J. W. Schneider. 2018. Unusual archosaur trackway and associated tetrapod ichnofauna from Irohalene member (Timezgadiouine Formation, Late Triassic, Carnian) of the Argana Basin, western High Atlas, Morocco. Historical Biology 32(5):589-601
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B. Wang, J. Li, and Z. Bai, J. Chang, Y. Zhang. 2017. The first discovery of deinonychosaurian tracks from Lower Cretaceous of Chabu, Otog Qi, Inner Mongolia and its significance. Acta Scientiarum Naturalium Universitatis Pekinensis 53(1):81-90
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L. Xing, M. G. Lockley, and K. S. Kim, H. Klein, M. Matsukawa, J. D. Lim, W. S. Persons, X. Xu. 2017. Mid-Cretaceous dinosaur track assemblage from the Tongfosi Formation of China: comparison with the track assemblage of South Korea. Cretaceous Research 74:155-164
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L.-D. Xing, M. G. Lockley, and J.-P. Zhang, H. Klein, S. B. Kümmell, W. S. Persons, H.-W. Kuang. 2017. Theropod tracks from the Lower Jurassic of Gulin area, Sichuan Province, China. Palaeoworld 26:115-123
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B. B. Britt, D. J. Chure, and G. F. Engelmann, J. D. Shumway. 2016. Rise of the erg—paleontology and paleoenvironments of the Triassic-Jurassic transition in northeastern Utah. Geology of the Intermountain West 3:1-32
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M. G. Lockley, R. Li, and M. Matsukawa, L. Xing, J. Li, M. Liu, X. Xu. 2015. Tracking the yellow dragons: implications of China's largest dinosaur tracksite (Cretaceous of the Zhucheng area, Shandong Province, China). Palaeogeography, Palaeoclimatology, Palaeoecology 423:62-79
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G. Pienkowski, P. Branski, and D. K. Pandey, J. Schlögl, M. Alberti, F. T. Fürsich. 2015. Dinosaur footprints from the Thaiat ridge and their palaeoenvironmental background, Jaisalmer Basin, Rajastan, India. Volumina Jurassica 13(1):17-26
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L. Xing, J. Zhang, and M. G. Lockley, R. T. McCrea, H. Klein, L. Alcalá, L. G. Buckley, M. E. Burns, S. B. Kümmell, Q. He. 2015. Hints of the early Jehol Biota: important dinosaur footprint assemblages from the Jurassic-Cretaceous boundary Tuchengzi Formation in Beijing, China. PLoS ONE 10(4):e0122715:1-34
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J.-D. Moreau, V. Trincal, and G. Gand, D. Néraudeau, G. Bessière, B. Bourel. 2014. Deux nouveaux sites à traces de pas dinosauroïdes dans la Formation Dolomitique de l’Hettangien de Lozère, Languedoc-Roussillon, France [Two new dinosaur tracksites from the Hettangian Dolomitic Formation of Lozère, Languedoc-Roussillon, France]. Annales de Paléontologie 100:361-369
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S. G. Dalman. 2012. New data on small theropod footprints from the Early Jurassic (Hettangian) Hartford Basin of Massachusetts, United States. Bulletin of the Peabody Museum of Natural History 53(2):333-353
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J. Li, M. G. Lockley, and Y. Zhang, S. Hu, M. Matsukawa, Z. Bai. 2012. An important ornithischian tracksite in the Early Jurassic of the Shenmu region, Shaanxi, China. Acta Geologica Sinica 86(1):1-10
J.-D. Moreau, G. Gand, and E. Fara, A. Michelin. 2012. Biometric and morphometric approaches on Lower Hettangian dinosaur footprints from the Rodez Strait (Aveyron, France). Comptes Rendus Palevol 11:231-239
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J. S. Tweet, V. L. Santucci, and T. Connors, J. P. Kenworthy. 2012. Paleontological Resource Inventory and Monitoring: Northern Colorado Plateau Network. National Park Service Technical Report NPS/NCPN/NRTR—2012/585
L.-d. Xing, G. D. Gierlinski, and J. D. Harris, J. D. Divay. 2012. A probable crouching theropod dinosaur trace from the Tuchengzi Formation in Chicheng area, Hebei Province, China. Geological Bulletin of China 31(1):20-25
S. de Valais. 2011. Revision of dinosaur ichnotaxa from the La Matilde Formation (Middle Jurassic), Santa Cruz Province, Argentina. Ameghiniana 48(1):28-42
C. Diedrich. 2011. Upper Jurassic tidal flat megatracksites of Germany—coastal dinosaur migration highways between European islands, and a review of the dinosaur footprints. Palaeobiodiversity and Palaeoenvironments 91:129-155
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J. I. Kirkland, S. K. Madsen, and D. D. DeBlieux, V. L. Santucci. 2011. Establishing a paleontological monitoring test site at Glen Canyon National Recreation Area. Proceedings of the 9th Conference on Fossil Resources, Kemmerer, WY. Brigham Young University Geology Studies 49(A):51-60
M. G. Lockley, K. Cart, and J. Martin, A. R. C. Milner. 2011. New theropod tracksites from the Upper Cretaceous "Mesaverde" Group, western Colorado: implications for ornithomimosaur track morphology. Fossil Record 3. New Mexico Museum of Natural History and Science Bulletin 53:321-329
M. G. Lockley. 2011. Putting the best foot forward: a single case of “toe extension” has general implications for the toe extension concept in theropod dinosaur feet and footprints. Fossil Record 3. New Mexico Museum of Natural History and Science Bulletin 53:301-305
M. G. Lockley. 2011. Theropod- and prosauropod-dominated ichnofaunas from the Navajo-Nugget Sandstone (Lower Jurassic) at Dinosaur National Monument: implications for prosauropod behaviour and ecology. Fossil Record 3. New Mexico Museum of Natural History and Science Bulletin 53:316-320
M. G. Lockley, A. R. Tedrow, and K. C. Chamberlain, N. J. Minter, J.-D. Lim. 2011. Footprints and invertebrate traces from a new site in the Nugget Sandstone (Lower Jurassic) of Idaho: implications for life in the northern reaches of the great Navajo-Nuggest erg system in the western USA. Fossil Record 3. New Mexico Museum of Natural History and Science Bulletin 53:344-356
M. G. Lockley, K. M. Hups, and K. Cart, S. Gerwe. 2011. A zone of sauropodomorph footprints in the basal Wingate Sandstone (latest Triassic) of western Colorado and eastern Utah: is Eosauropus a common ichnogenus in the region?. Fossil Record 3. New Mexico Museum of Natural History and Science Bulletin 53:337-343
A. R. C. Milner, T. A. Birthisel, and J. I. Kirkland, BH Breithaupt, N. A. Matthews, M. G. Lockley, V. L. Santucci, S. Z. Gibson, D. D. DeBlieux, M. Hurlbut, J. D. Harris, P. E. Olsen. 2011. Tracking Early Jurassic dinosaurs across southwestern Utah and the Triassic-Jurassic transition. Field Trip Guide Book, 71st Annual Meeting of the Society of Vertebrate Paleontology Paris Las Vegas, Las Vegas, Nevada, November 2-5, 2011. Nevada State Museum Paleontological Papers 1:1-107
G. Niedźwiedzki. 2011. A Late Triassic dinosaur-dominated ichnofauna from the Tomanová Formation of the Tatra Mountains, Central Europe. Acta Palaeontologica Polonica 56(2):291-300
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T. Sulej, R. Bronowicz, and M. Talanda, G. Niedwiedzki. 2011. A new dicynodont–archosaur assemblage from the Late Triassic (Carnian) of Poland. Earth and Environmental Science Transactions of the Royal Society of Edinburgh 101:261-269
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L. Xing, A. Mayor, and Y. Chen, J. D. Harris, M. E. Burns. 2011. The folklore of dinosaur trackways in China: impact on paleontology. Ichnos 18(4):213-220
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L.-d. Xing, J. D. Harris, and G. D. Gierlinski. 2011. Therangospodus and Megalosauripus track assemblage from the Upper Jurassic–Lower Cretaceous Tuchengzi Formation of Chicheng County, Hebei Province, China and their paleoecological implications. Vertebrata PalAsiatica 49(4):423-434
A. G. Cook, N. Saini, and S. A. Hocknull. 2010. Dinosaur footprints from the lower Jurassic of Mount Morgan, Queensland. Memoirs of the Queensland Museum—Nature 55(1):135-146
C. A. Meyer, B. Thüring, and D. Marty, L. Costeur, S. Thüring. 2010. Tracking early dinosaurs—new discoveries from the Upper Austroalpine Nappes of Eastern Switzerland (Hautpdolomit, Norian). 8th Meeting of the European Association of Vertebrate Palaeontologists. Abstract Volume
M. G. Lockley and G. D. Gierlinski. 2009. A Grallator-dominated tracksite from the Chinle Group (Late Triassic), Moab, Utah. Geological Quarterly 53(4):433-440
L.-d. Xing, J. D. Harris, and X.-y. Feng, Z.-j. Zhang. 2009. Theropoda (Dinosauria: Saurischia) tracks from the Lower Cretaceous Yixian Formation at Sihetun Village, Liaoning Province, China and possible track makers. Geological Bulletin of China 28(6):705-712
M. Bessedik, C. Mammeri, and L. Belkebir, M. Mahboubi, M. Adaci, H. Hebib, M. Bensalah, B. Mansour, M. E. H. Mansouri. 2008. Nouvelles données sur les ichnites de dinosaures de la region d’El Bayadh (Crétacé Inferieur, Algérie) [New data on the dinosaur tracks of the El Bayadh region (Lower Cretaceous, Algeria)]. Palaeovertebrata 30(1–4):7-35
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S. D'Orazi Porchetti, U. Nicosia, and P. Mietto, F. M. Petti, M. Avanzini. 2008. Atreipus-like footprints and their co-occurrence with Evazoum from the upper Carnian (Tuvalian) of Trentino-Alto Adige. Studi Trentini di Scienze Naturali, Acta Geologica 83:277-287
R. C. da Silva, I. d. S. Carvalho, and A. C. S. Fernandes. 2008. Pegadas de dinossauros do Triássico (Formação Santa Maria) do Brasil [Dinosaur footprints from the Triassic (Santa Maria Formation) of Brazil]. Ameghiniana 45(4):783-790
W. M. Seiler and M. A. Chan. 2008. A wet interdune dinosaur trampled surface in the Jurassic Navajo Sandstone, Coyote Buttes, Arizona: rare preservation of Multiple track types and tail traces. Palaios 23(10):700-710
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M. Bécaud. 2007. Nouveau gisement à traces de pas de vertébrés dans le Jurassique inférieur de Vendée littorale (France). Discussion sur l'âge des assises
qui les contiennent [New locality with vertebrate footprints in the lower Jurassic of the coastal Vendée (France). Discussion of the age of the beds containing them]. Le Naturaliste Vendéen 7:27-32
A. P. Hunt and S. G. Lucas. 2007. Late Triassic tetrapod tracks of western North America. In S. G. Lucas & J. A. Spielmann (eds.), Triassic of the American West. New Mexico Museum of Natural History and Science Bulletin 40:215-230
R. J. Cuffey, J. D. Inners, and G. M. Fleeger, R. C. Smith II, J. C. Neubaum, R. C. Keen, L. Butts, H. L. Delano, Vr A. Neubaum, R. H. Howe. 2006. Geology of the Gettysburg battlefield: how Mesozoic events and processes impacted American history. Excursions in Geology and History: Field Trips in the Middle Atlantic States. Geological Society of America Field Guide 8:1-16
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D. B. DeBlieux, J. I. Kirkland, and J. A. Smith, J. McGuire, V. L. Santucci. 2006. An overview of the paleontology of Upper Triassic and Lower Jurassic rocks in Zion National Park, Utah. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:490-501
W. B. Gallagher and P. A. Hanczaryk. 2006. The West Paterson Quarry: an Early Jurassic dinosaur track site in the Newark Basin of New Jersey. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:238-240
A. H. Hamblin, M. G. Lockley, and A. R. C. Milner. 2006. More reports of theropod dinosaur tracksites from the Kayenta Formation (Lower Jurassic), Washington County, Utah: implications for describing the Springdale megatracksite. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:276-281
P. Huber and P. M. LeTourneau. 2006. Revised lithostratigraphy of the Norian–Hettangian Pomperaug rift basin, western Connecticut: resolving a century-old conflict in geological interpretation. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:43-61
A. P. Hunt and S. G. Lucas. 2006. Late Triassic tetrapod tracks from Petrified Forest National Park, Arizona. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:221-225
A. P. Hunt and S. G. Lucas. 2006. The significance of the St. George Dinosaur Discovery Site at Johnson Farm: a Jurassic Konzentrat-Ichnolagerstätte, Utah, U.S.A. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:282-288
J. I. Kirkland and A. R. C. Milner. 2006. The Moenave Formation at the St. George Dinosaur Discovery Site at Johnson Farm, St. George, southwestern Utah. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:289-309
D. Li, Y. Azuma, and M. Fujita, Y.-N. Lee, Y. Arakawa. 2006. A preliminary report on two new vertebrate track sites including dinosaurs from the Early Cretaceous Hekou Group, Gansu province, China. Journal of the Paleontological Society of Korea 22(1):29-49
M. G. Lockley. 2006. Observations on the ichnogenus Gwyneddichium and Gwyneddichium-like footprints and trackways from the Upper Triassic of the western United States. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:170-175
M. G. Lockley, A. R. C. Milner, and D. Slauf, A. H. Hamlbin. 2006. Dinosaur tracksites from the Kayenta Formation (Lower Jurassic) “Desert Tortoise site,” Washington County, Utah. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:269-275
D. L. Lofgren, J. A. Greening, and C. F. Johnson, S. J. Lewis, M. A. Torres. 2006. Footprints on the sands of time: fossil tracks at the Raymond Alf Museum of Paleontology. Making Tracks Across the Southwest: The 2006 Desert Symposium
D. B. Loope. 2006. Dry-season tracks in dinosaur-triggered grainflows. Palaios 21:132-142
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S. G. Lucas, M. G. Lockley, and A. P. Hunt, L. H. Tanner. 2006. Biostratigraphic significance of tetrapod footprints from the Triassic-Jurassic Wingate Sandstone on the Colorado Plateau. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:109-117
S. G. Lucas and R. M. Sullivan. 2006. Tetrapod footprints from the Upper Triassic Passaic Formation near Graterford, Montgomery County, Pennsylvania. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:251-256
M. Matsukawa, M. G. Lockley, and J. Li. 2006. Cretaceous terrestrial biotas of East Asia, with special reference to dinosaur-dominated ichnofaunas: towards a synthesis. Cretaceous Research 27(1):3-21
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V. L. Santucci, A. P. Hunt, and T. Nyborg, J. P. Kenworthy. 2006. Additional fossil vertebrate tracks in National Park Service Areas. Fossils from Federal Lands. New Mexico Museum of Natural History and Science Bulletin 34:152-158
J. A. J. Williams, A. R. C. Milner, and M. G. Lockley. 2006. The Early Jurassic (Hettangian) LDS dinosaur tracksite from the Moenave Formation in St. George, Utah. The Triassic-Jurassic Terrestrial Transition. New Mexico Museum of Natural History and Science Bulletin 37:346-351
G. Bianucci and W. Landini. 2005. I paleositi a vertebrati fossili della Provinia di Pisa. Atti della Società Toscana di Scienze Naturali - Memorie serie A 110:1-21
S. Dalman. 2005. A small ornithischian dinosaur footprint assemblage from the Early Jurassic, Holyoke, MA. Journal of Vertebrate Paleontology 25(3):49A
G. Gand and G. Demathieu. 2005. Les pistes dinosauroïds du Trias moyen français: interprétation et réévaluation de la nomenclature [The French Middle Triassic dinosauroid trackways: interpretation and nomenclatural reevaluation]. Geobios 38:725-749
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G. Gierlinski and G. Niedzwiedzki. 2005. New saurischian dinosaur footprints from the Lower Jurassic of Poland. Geological Quarterly 49(1):99-104
P. E. Olsen. 2005. Field Guide for Non-marine Boundary Events in the Newark Basin (New Jersey, Pennsylvania, and Connecticut), Eastern United States and their Litho-, Chrono- and Biostratigraphic Context. Guidebooks for Field Workshops of IGCP 458
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G. Christe and R. E. Weems. 2004. A new Upper Triassic dinosaur & reptile track site, Culpeper Basin, Prince William County, Virginia. Geological Society of America Abstracts with Programs 36(2):96
M. King, J. Smith, and J. R. Foster. 2004. First report of vertebrate tracks from the Wingate Sandstone (Triassic–Jurassic) of Colorado National Monument, Colorado. Journal of Vertebrate Paleontology 24(3, suppl.):78A
M. G. Lockley, S. G. Lucas, and A. P. Hunt, R. Gaston. 2004. Ichnofaunas from the Triassic-Jurassic boundary sequences of the Gateway area, western Colorado: implications for faunal composition and correlations with other areas. Ichnos 11:89-102
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R. A. Rodríguez-de la Rosa, M. C. Aguillón-Martínez, and J. López-Espinoza. 2004. The fossil record of vertebrate tracks in Mexico. Ichnos 11:27-37
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M. Romano and M. A. Whyte. 2003. Jurassic dinosaur tracks and trackways of the Cleveland Basin, Yorkshire: preservation, diversity and distribution. Proceedings of the Yorkshire Geological Society 54(3):185-215
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M. J. Szajna and B. W. Hartline. 2003. A new vertebrate footprint locality from the Late Triassic Passaic Formation near Birdsboro, Pennsylvania. The Great Rift Valleys of Pangea in Eastern North America. Volume 2. Sedimentology, Stratigraphy, and Paleontology
P. R. Getty. 2002. A study of Early Jurassic dinosaur footprints in Forest Park, Springfield, Massachusetts. Journal of Vertebrate Paleontology 22(3 (suppl.)):58A
S. G. Lucas and A. B. Heckert. 2002. Upper Triassic dinosaur track from Fort Wingate, New Mexico. In A. B. Heckert & S. G. Lucas (eds.), Upper Triassic Stratigraphy and Paleontology. New Mexico Museum of Natural History and Science Bulletin 21:245-247
A. H. Hamblin and J. R. Foster. 2001. Ancient animal footprints and traces in the Grand Staircase-Escalante National Monument, south-central Utah. D. A. Sprinkel, T. C. Chidsey, Jr., & P. B. Anderson (eds.), Geology of Utah's Parks and Monuments: 2000 Utah Geological Association Publication 28:1-12
M. G. Lockley, J. L. Wright, and W. Langston, Jr, E. S. West. 2001. New pterosaur track specimens and tracksites in the Late Jurassic of Oklahoma and Colorado: their paleobiological significance and regional ichnological context. Modern Geology 24:179-203
G. Gand, M. Vianey-Liaud, and G. Demathieu, J. Garric. 2000. Deux nouvelles traces de pas de Dinosaures du Trias supérieur de la bordure cévenole (La Grand-Combe, Sud-Est de la France) [Two new dinosaur footprints from the Upper Triassic of the Cevennes border (La Grande-Combe, southeastern France)]. Geobios 33(5):599-624
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A. H. Hamblin, S. A. Bilbey, and J. E. Hall. 2000. Prehistoric animal tracks at Red Fleet State Park, northeastern Utah. D. A. Sprinkel, T. C. Chidsey, Jr., & P. B. Anderson (eds.), Geology of Utah's Parks and Monuments: 2000 Utah Geological Association Publication 28:1-10
A. P. Hunt, S. G. Lucas, and M. G. Lockley, A. B. Heckert. 2000. Occurrence of the dinosaurian ichnogenus Grallator in the Redonda Formation (Upper Triassic: Norian) of eastern New Mexico. Dinosaurs of New Mexico. New Mexico Museum of Natural History and Science Bulletin 17:39-41
G. Leonardi. 2000. I dinosauri d'Italia e delle aree adiacenti [The dinosaurs of Italy and adjacent areas]. Dinosauri in Italia. Le Orme Giurassiche dei Lavini di Marco (Trentino) e Gli Altri Resti Fossili Italiani
G. Gierlinski and G. Pienkowski. 1999. Dinosaur track assemblages from the Hettangian of Poland. Geological Quarterly 43(3):329-346
A. H. Hamblin and S. A. Bilbey. 1999. A dinosaur track site in the Navajo-Nugget Sandstone, Red Fleet Reservoir, Uintah County, Utah. Vertebrate Paleontology in Utah, Utah Geological Survey Miscellaneous Publication 99-1:51-57
M. Avanzini. 1998. Anatomy of a footprint: bioturbation as a key to understanding dinosaur walk dynamics. Ichnos 6(3):129-139
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N. D. L. Clark and J. L. Barco Rodríguez. 1998. The first dinosaur trackway from the Valtos Sandstone Formation (Bathonian, Jurassic) of the Isle of Skye, Scotland, UK. Geogaceta 24:79-82
M. G. Lockley, A. P. Hunt, and C. A. Meyer, E. C. Rainforth, R. J. Schultz. 1998. A survey of fossil footprint sites at Glen Canyon National Recreation Area (western USA): a case study in documentation of trace fossil resources at a national preserve. Ichnos 5(3):177-211
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G. Pienkowski. 1998. Dinosaur nesting ground from the Early Jurassic fluvial deposits, Holy Cross Mountains (Poland). Geological Quarterly 42(4):461-476
T. Thulborn. 1998. Australia's earliest theropods: footprint evidence in the Ipswich Coal Measures (Upper Triassic) of Queensland. GAIA 15:301-311
D. Fagin. 1997. Fossil hunter dug up treasure on North Shore beach. New York Newsday
S. Bulkley. 1996. A dinosaur mass tracksite in the Lower Jurassic Kayenta Formation of northeastern Arizona. The Continental Jurassic. Museum of Northern Arizona Bulletin 60:167-168
N. C. Fraser and P. E. Olsen. 1996. A new dinosauromorph ichnogenus from the Triassic of Virginia. Jeffersoniana: Contributions from the Virginia Museum of Natural History 7:1-17
G. Gierlinski. 1996. Dinosaur ichnotaxa from the Lower Jurassic of Hungary. Geological Quarterly 40(1):119-128
M. G. Lockley, M. King, and S. Howe, T. Sharp. 1996. Dinosaur tracks and other archosaur footprints from the Triassic of South Wales. Ichnos 5:23-41
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M. A. Raath. 1996. Earliest evidence of dinosaurs from central Gondwana. Memoirs of the Queensland Museum 39(3):703-709
J. B. Smith, J. R. Smith, and J. P. Sweeney. 1996. Mt. Tom revisited: a new fossil horizon at Dinosaur Footprint Reservation, Northampton, Massachusetts. Journal of Vertebrate Paleontology 16(3, suppl.):67A
M. J. Szajna and A. M. Silvestri. 1996. A new occurrence of the ichnogenus Brachychirotherium: implications for the Triassic–Jurassic mass extinction event. The Continental Jurassic. Museum of Northern Arizona Bulletin 60:275-283
D. B. Weishampel and L. Young. 1996. Dinosaurs of the East Coast
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A. P. Hunt, M. G. Lockley, and K. Hups, R. J. Schultze. 1995. Jurassic vertebrate paleontology of Cactus Park, west-central Colorado. Geological Society of America Abstracts-with-Programs 27(4):15
M. G. Lockley and A. P. Hunt. 1995. Dinosaur Tracks and Other Fossil Footprints of the Western United States
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S. G. Lucas, A. P. Hunt, and M. G. Lockley. 1995. Dinosaur footprint from the Upper Triassic Rock Point Formation of the Chinle Group, Canyonlands National Park. In V. L. Santucci & L. McClelland (eds.), National Park Service Natural Resources Publication Office Technical Report NPS/NRPO/NRTR-95/16. National Park Service Paleontological Research Volume 1:58-59
P. E. Olsen. 1995. Paleontology and paleoenvironments of Early Jurassic age strata in the Walter Kidde Dinosaur Park (New Jersey, USA). Field Guide and Proceedings of the Twelfth Annual Meeting of the Geological Association of New Jersey
F. A. Jenkins, N. H. Shubin, and W. W. Amaral, S. M. Gatesy, C. R. Schaff, L. B. Clemmensen, W. R. Downs, A. R. Davidson, N. Bonde, F. Osbaeck. 1994. Late Triassic continental vertebrates and depositional environments of the Fleming Fjord Formation, Jameson Land, East Greenland. Meddelelser om Grønland, Geoscience 32:1-25
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R. M. Sullivan, K. Randall, and M. Hendricks, W. E. Kochanov. 1994. The Graterford dinosaurs: tracking Triassic travelers. Pennsylvania Geology 25(4):2-9
S. Zhen, J. Li, and B. Zhang, W. Chen, S. Zhu. 1994. Dinosaur and bird footprints from the Lower Cretaceous of Emei County, Sichuan, China. Memoirs of Beijing Natural History Museum 54:105-120
G. R. S. Demathieu. 1993. Empreintes de pas de dinosaures dans les Causses (France) [Dinosaur footprints in the Causses (France)]. Zubía 5:229-252
G. V. Irby. 1993. Early Jurassic dinosaur tracksites, northeastern Arizona. Proceedings of the 1st Annual Symposium, Fossils of Arizona. Mesa Southwest Museum and Southwest Paleontological Society, Mesa, AZ
S. M. Silvestri and M. J. Szajna. 1993. Biostratigraphy of vertebrate footprints in the Late Triassic section of the Newark Basin, Pennsylvania: reassessment of stratigraphic ranges. The Nonmarine Triassic. New Mexico Museum of Natural History and Science Bulletin 3:439-445
G. R. Demathieu and J. Sciau. 1992. Des pistes de dinosaures et de crocodiliens dans les dolomies de l'Hettangien du Causse du Larzac [Dinosaur and crocodilian trackways in the Hettangian dolomites of the Larzac Causse]. Comptes Rendus de l'Académie des Sciences à Paris, Série II 315:1561-1566
M. G. Lockley, S.Y. Yang, and M. Matsukawa, F. Fleming, SK Lim. 1992. The track record of Mesozoic birds: evidence and implications. Philosophical Transactions of the Royal Society of London, Series B: Biological Sciences 336:113-134
M. G. Lockley, K. L. Conrad, and M. Paquette, A. H. Hamblin. 1992. Late Triassic vertebrate tracks in the Dinosaur National Monument area. Field Guide to Geologic Excursions in Utah and Adjacent Areas of Nevada, Idaho, and Wyoming. Utah Geological Survey Miscellaneous Publication 92-3:383-390
R. E. Weems. 1992. Are-evaluation of the taxonomy of Newark Supergroup saurischian dinosaur tracks, using extensive statistical data froma recently exposed tracksite near Culpeper, Virginia. Virginia Division of Mineral Resources Publication 119:113-127
M. G. Lockley, K. L. Conrad, and M. Paquette. 1991. Distribution and significance of Mesozoic vertebrate trace fossils in Dinosaur National Monument. University of Wyoming National Park Service Research Center Annual Report 15(16):85-90
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F.-O. Haderer. 1990. Ein tridactyles Trittsiegel aus dem Unteren Stubensandstein (Obere Trias, Nor) des Rühlenbachtales (Württemberg) [A tridactyl footprint from the Lower Stubensandstein (Upper Triassic, Norian) of the Rühlenbach valley (Württemberg)]. Stuttgarter Beiträge zur Naturkunde, Serie B (Geologie und Paläontologie) 160:1-14
S. G. Lucas, A. P. Hunt, and P. Huber. 1990. Jurassic dinosaur footprints from New Mexico. New Mexico Geological Society, 41st Annual Fall Field Conference, Tectonic Development of the Southern Sangre de Cristo Mountains, New Mexico. New Mexico Geological Society Guidebook 41:319-321
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M. A. Raath, J. W. Kitching, and R. W. Shone, G. J. Rossouw. 1990. Dinosaur tracks in Triassic Molteno sediments: the earliest evidence for dinosaurs in South Africa?. Palaeontologia Aricana 27:89-95
G. Leonardi. 1989. Inventory and statistics of the South American dinosaurian ichnofauna and its paleobiological interpretation. Dinosaur Tracks and Traces
P. E. Olsen. 1989. Stop 11.2: Five Islands Provincial Park. Tectonic, Depositional, and Paleoecological History of Early Mesozoic Rift Basins, Eastern North America. Gulf, North Carolina, USA to Parrsboro, Nova Scotia, Canada. July 20–30, 1989. International Geological Congress Field Trip T-351
P. E. Olsen. 1989. Stop 10.4: Coves along Scots Bay. Tectonic, Depositional, and Paleoecological History of Early Mesozoic Rift Basins, Eastern North America. Gulf, North Carolina, USA to Parrsboro, Nova Scotia, Canada. July 20–30, 1989. International Geological Congress Field Trip T-351
P. E. Olsen and P. J. W. Gore. 1989. Stop 2.2: Solite Quarry, Leaksville Junction, VA. Tectonic, Depositional, and Paleoecological History of Early Mesozoic Rift Basins, Eastern North America. Gulf, North Carolina, USA to Parrsboro, Nova Scotia, Canada. July 20–30, 1989. International Geological Congress Field Trip T-351
F.-O. Haderer. 1988. Ein dinosauroider Fährtenrest aus dem Unteren Stubensandstein (Obere Trias, Nor, km4) des Strombergs (Württemberg) [A dinosauroid trackway from the Lower Stubensandstein (Upper Triassic, Norian, km4) of the Stromberg (Württemberg)]. Stuttgarter Beiträge zur Naturkunde, Serie B (Geologie und Paläontologie) 138:1-12
R. E. Weems. 1987. A Late Triassic footprint fauna from the Culpeper Basin, northern Virginia (U.S.A.). Transactions of the American Philosophical Society, New Series 77(1):1-79
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Y. X. Yang and Y. D. Yang. 1987. Sichuan Pen Di Kong Long Zu Yin Hua Shi [Dinosaur Footprints from Mesozoic of Sichuan Basin]
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M. G. Lockley. 1986. A Guide to Dinosaur Tracksites of the Colorado Plateau and American Southwest. University of Colorado at Denver Geology Department Magazine, Special Issue 1:1-56
S. G. Lucas, A. P. Hunt, and K. K. Kietzke. 1986. Late Triassic dinosaur footprints from east-central New Mexico. First International Symposium on Dinosaur Tracks and Traces, Abstracts with Program
P. E. Olsen and D. Baird. 1986. The ichnogenus Atreipus and its significance for Triassic biostratigraphy. In: K. Padian (ed.), The Beginning of the Age of Dinosaurs: Faunal Changes Across the Triassic-Jurassic Boundary. Cambridge University Press, Cambridge
K. Pannell. 1986. Dinosaur footprints at Oak Hill, Virginia. First International Symposium on Dinosaur Tracks and Traces, Abstracts with Program
R. E. Reynolds. 1986. California trackways from the Lower Jurassic Aztec Sandstone. First International Symposium on Dinosaur Tracks and Traces. Abstracts with Program
S. Zhen, J. Li, and C. Rao. 1986. [Dinosaur footprints of Jinning, Yunnan]. Memoirs of the Beijing Natural History Museum 33:1-19
P. E. Olsen, A. R. McCune, and K. S. Thomson. 1982. Correlation of the early Mesozoic Newark Supergroup by vertebrates, principally fishes. American Journal of Science 282:1-44
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D. W. Fisher. 1981. The world of Coelophysis—a New York dinosaur of 200 million years ago. New York State Museum and Science Service Circular 49:1-22
P. E. Olsen. 1981. Comment on ‘Eolian dune field of Late Triassic age, Fundy Basin, Nova Scotia’. Geology 9(12):557-559
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P. E. Olsen. 1980. Fossil great lakes of the Newark Supergroup of New Jersey. Field Studies in New Jersey Geology and Guide to Field Trips. 52nd Annual Meeting, New York State Geological Association
L. Eriksen. 1979. Tell tale tracks – part II. Museum Notes 5:6-7
P. Ellenberger. 1974. Contribution à la classification des pistes de Vertébrés du Trias: les types du Stormberg d'Afrique du Sud (IIème partie: Le Stormberg superieur - I. Le biome de la zone B/1 ou niveau de Moyeni: ses biocénoses) [Contribution to the classification of the vertebrate tracks of the Triassic: the types from the Stormberg of South Africa (2nd part: The upper Stormberg - I. The biome of zone B/1 or Moyeni level: its biocoenoses]. Palaeovertebrata Mém. Ext.(1974):1-147
J. H. Ostrom. 1972. Were some dinosaurs gregarious?. Palaeogeography, Palaeoclimatology, Palaeoecology 11:287-301
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F. Ellenberger, P. Ellenberger, and L. Ginsburg. 1970. Les Dinosaures du Trias et du Lias en France et en Afrique du Sud, d'après les pistes qu'ils ont laissées [The Triassic and Liassic dinosaurs in France and South Africa, after their prints]. Bulletin de la Société Géologique de France, 7e série 12(1):151-159
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P. Ellenberger. 1970. Les niveaux paléontologiques de première apparition des mammifères primoridaux en Afrique du Sud et leur ichnologie. Establissement de zones stratigraphiques detaillees dans le Stormberg du Lesotho (Afrique du Sud) (Trias Supérieur à Jurassique) [The paleontological levels of the first appearance of primordial mammals in southern Africa and their ichnology. Establishment of detailed stratigraphic zones in the Stormberg of Lesotho (southern Africa) (Upper Triassic to Jurassic). In: S. H. Haughton (ed.), Second Symposium on Gondwana Stratigraphy and Paleontology, International Union of Geological Sciences. Council for Scientific and Industrial Research, Pretoria
C. Montenat. 1968. Empreintes de pas de Reptiles dans le Trias moyen du plateau du Daüs près d’Aubenais (Ardèche) [Reptile footprints in the Middle Triassic of the Daüs plateau near Aubenais (Ardèche)]. Bulletin Scientifique de Bourgogne 25:369-389
J. H. Ostrom and S. S. Quarrier. 1968. Trip C-3: the Rocky Hill dinosaurs. In P. M. Orville (ed.), New England Intercollegiate Geological Conference, 60th Annual Meeting, Guidebook for Fieldtrips in Connecticut. State Geological and Natural History Survey of Connecticut, Hartford 2:1-11
A. F. d. Lapparent and C. Montenat. 1967. Les empreintes de pas de reptiles de l'Infralias de Veillon (Vendée) [Reptile footprints from the lower Lias of Veillon (Vendée)]. Mémoires de la Société géologique de France, nouvelle série 107:1-44
R. H. Nelson. 1965. New locality for dinosaur tracks in Connecticut. Rocks and Minerals 40:5-7
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D. Baird. 1964. Dockum (Late Triassic) reptile footprints from New Mexico. Journal of Paleontology 38(1):118-125
C.-C. Young. 1960. Fossil footprints from China. Vertebrata PalAsiatica 4(2):53-66
D. Baird. 1957. Triassic reptile footprint faunules from Milford, New Jersey. Bulletin of the Museum of Comparative Zoology 117(5):449-520
R. S. Lull. 1953. Triassic life of the Connecticut Valley (revised). State of Connecticut State Geological and Natural History Survey Bulletin 81:1-336
W. Bock. 1952. Triassic reptilian tracks and trends of locomotive evolution. Journal of Paleontology 26(3):395-433
F. Heller. 1952. Reptilfährten-Funde aus dem Ansbacher Sandstein des Mittleren Keupers von Franken [Reptile track discoveries from the Anshbacher Sandstone of the Middle Keuper of Franconia]. Geologische Blätter für Nordost-Bayern und angrenzende Gebiete 2(4):129-141
M. Noda and T. Shikama. 1941. Netsuka osore ryū no ashiato kaseki ni tsuite [On the fossil footprints of Fukui dragons]. Kagaku (Science) 11(12):474-478
H. Yabe, Y. Inai, and T. Shikama. 1940. Dinosaurian footprints found near Yangshan, Chinchou, Manchoukou. Journal of the Geological Society of Japan 47:169-170
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W. O. Hickok and B. Willard. 1933. Dinosaur foot tracks near Yocumtown, York County, Pennsylvania. Proceedings of the Pennsylvania Academy of Sciences 7:55-58
E. B. Branson and M. G. Mehl. 1932. Footprints records from the Paleozoic and Mesozoic of Missouri, Kansas, and Wyoming. Bulletin of the Geological Society of America 43:383-398
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M. R. Thorpe. 1929. A new Triassic fossil field. The American Journal of Science, series 5 18(106):277-300
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C. H. Hitchcock and N. M. Grier. 1927. The Hitchcock Lecture upon ichnology, and the Dartmouth College ichnological collection. The American Midland Naturalist 10(7):161-197
G. Gürich. 1926. Über Saurier-Fährten aus dem Etjo-Sandstein von Südwestafrika [On dinosaur tracks from the Etjo Sandstone of South-West Africa]. Palaeontologische Zeitschrift 8:112-120
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R. S. Lull. 1915. Triassic life of the Connecticut Valley. State of Connecticut State Geological and Natural History Survey Bulletin 24:1-285
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J. B. Cushman. 1904. A new foot-print from the Connecticut Valley. The American Geologist 33:154-156
R. S. Lull. 1904. Fossil footprints of the Jura-Trias of North America. Memoirs of the Boston Society of Natural History 5(11):461-557
C. H. Hitchcock. 1889. Recent progress in ichnology. Proceedings of the Boston Society of Natural History 24(8):117-127
C. H. Hitchcock. 1865. Appendix [B]. Descriptive catalogue of the specimens in the Hitchcock Ichnological Cabinet of Amherst College. Supplement to the Ichnology of New England. A Report to the Government of Massachusetts in 1863
E. Hitchcock. 1865. Supplement to the ichnology of New England. Supplement to the Ichnology of New England. A Report to the Government of Massachusetts in 1863
E. Hitchcock. 1858. Ichnology of New England. A Report on the Sandstone of the Connecticut Valley, Especially its Fossil Footmarks, Made to the Government of the Commonwealth of Massachusetts
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E. Hitchcock. 1848. An attempt to discriminate and describe the animals that made the fossil footmarks of the United States, and especially of New England. Memoirs of the American Academy of Arts and Sciences, new series 3:129-256
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E. Hitchcock. 1847. Description of two new species of fossil footmarks found in Massachusetts and Connecticut, or, of the animals that made them. The American Journal of Science and Arts, series 2 4(10):46-57
W. C. Redfield. 1843. Notice of newly discovered fish beds and a fossil foot mark in the Red Sandstone Formation of New Jersey. The American Journal of Science and Arts 44:134-136
E. Hitchcock. 1841. Final Report on the Geology of Massachusetts
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E. Hitchcock. 1837. Ornithichnites in Connecticut. The American Journal of Science and Arts 31:174-175
E. Hitchcock. 1836. Ornithichnology - description of the foot marks of birds, (Ornithichnites) on new Red Sandstone in Massachusetts. The American Journal of Science and Arts 29(2):307-340