Portland
Description
Source: Wikipédia
The Portland Formation is a geological formation in Connecticut and Massachusetts in the northeastern United States. It dates back to the Early Jurassic period. The formation consists mainly of sandstone laid down by a series of lakes (in the older half of the formation) and the floodplain of a river (in the younger half). The sedimentary rock layers representing the entire Portland Formation are over 4 kilometres (2.5 mi) thick and were formed over about 4 million years of time, from the Hettangian age (lower half) to the late Hettangian and Sinemurian ages (upper half).
In 2016, the paleontologist Robert E. Weems and colleagues suggested the Portland Formation should be elevated to a geological group within the Newark Supergroup (as the Portland Group), and thereby replacing the former name "Agawam Group". They also reinstated the Longmeadow Sandstone as a formation (within the uppermost Portland Group); it had earlier been considered identical to the Portland Formation.
Découvertes
Source: The Paleobiology Database
Site(s) correspondant(s) à cette formation: 9
"Middlebury" quarry (Middletown) : Connecticut - ? 4207 14355 15654 36780 56367 78229 78230 probably the sandstone quarries at Portland, CT, across the Connecticut River from Middletown ("Middlebury" originally reported probably in error). Found at a construction site in Newport, RI and traced back to these quarries.- Boynton farm, South Hadley : Massachusetts - Hampshire 9194 14321 14628 56367 62966 85047 "not far" from Mount Holyoke College, Hampshire County, in a gravel pit on the John A. Boynton farm. Coordinates for the college. Found in a glacial boulder, supposedly carried only 2-3 miles. Lull (1915): "The parent ledge must lie on the south side of the Holyoke range not more than two or three miles north of the place where the specimen was found."
- Wolcott quarry, Manchester : Connecticut - Hartford 10620 10622 12251 12624 14321 14628 26707 56367 62966 63496 80941 81482 85047 in quarry of Mr. Charles O. Wolcott, about 1 mile N of Buckland station, Manchester
- Springfield Armory : Massachusetts - Hampden 7819 9053 12624 14628 23643 29531 30861 35435 56367 62966 64634 80941 81482 84543 85047 discovered during blasting at the Water shops, Mill Pond, U.S. Armory, Springfield, MA
- Anchisaurus polyzelus identifié comme Megadactylus polyzelus n. gen. n. sp.
- Ketch's Mills, East Windsor : Connecticut - Hartford 12624 14321 14628 14669 27912 29531 62301 69420 78202 80941 81482 85047 discovered during blasting for a well near Ketch's Mills, 18 ft below top of rock and 23 feet below surface, in East WIndsor, CT
- Greenfield "bone locality" (YPM) : Massachusetts - Franklin 14321 14628 85047 0.5 mi N of Greenfield, in red sandstone quarry
- Nash Dinosaurland : Massachusetts - Hampshire 54809 78033 85047 located at 594 Amherst Rd., South Hadley
- Rainbow tracksite, Windsor : Connecticut - Hartford 52553 in the small hamlet of Rainbow, Windsor
- South Hadley canal : Massachusetts - Hampden 78199 Hadley Canal
Publication(s)
La base comprend 37 publication(s).
Source: The Paleobiology Database
- ↑1 2 Anonymous. 1864. [Prof. W. B. Rogers presented an original cast in sandstone of bones from the Mesozoic Rocks of Middlebury, Ct.]. Proceedings of the Boston Society of Natural History 10:42
- ↑1 E. H. Colbert and D. Baird. 1958. Coelurosaur bone casts from the Connecticut Valley Triassic. American Museum Novitates 1901:1-11
- ↑1 E. H. Colbert. 1964. The Triassic dinosaur genera Podokesaurus and Coelophysis. American Museum Novitates 2168:1-12
- ↑1 E. H. Colbert. 1989. The Triassic dinosaur Coelophysis. Museum of Northern Arizona Bulletin 57:1-174
- ↑1 T. Rowe and J. Gauthier. 1990. Ceratosauria. The Dinosauria. University of California Press, Berkeley
- ↑1 2 3 4 E. H. Colbert. 1970. Fossils of the Connecticut Valley. The Age of Dinosaurs begins (revised edition). State Geological and Natural History Survey of Connecticut Bulletin 96:iv-32
- ↑1 P. R. Getty and A. M. Bush. 2011. Sand pseudomorphs of dinosaur bones: implications for (non-) preservation of tetrapod skeletal material in the Hartford Basin, USA. Palaeogeography, Palaeoclimatology, Palaeoecology 301(3-4):407-414 (https://doi.org/10.1016/j.palaeo.2011.01.029)
- ↑1 2 M. Talbot. 1911. Podokesaurus holyokensis, a new dinosaur from the Triassic of the Connecticut Valley. American Journal of Science 31(186):469-479 (https://doi.org/10.2475/ajs.s4-31.186.469)
- ↑1 2 3 4 R. S. Lull. 1953. Triassic life of the Connecticut Valley (revised). State of Connecticut State Geological and Natural History Survey Bulletin 81:1-336
- ↑1 2 3 4 5 6 R. S. Lull. 1915. Triassic life of the Connecticut Valley. State of Connecticut State Geological and Natural History Survey Bulletin 24:1-285 (https://doi.org/10.5962/bhl.title.70405)
- ↑1 2 3 F. v. Huene. 1914. I: Animalia. Pars 4. Saurischia et Ornithischia triadica (“Dinosauria” triadica).
- ↑1 2 3 4 5 6 D. B. Weishampel and L. Young. 1996. Dinosaurs of the East Coast (https://doi.org/10.1111/j.1502-3931.1996.tb01654.x)
- ↑1 2 O. C. Marsh. 1889. Notice of new American Dinosauria. The American Journal of Science and Arts, series 3 38:331-336 (https://doi.org/10.2475/ajs.s3-37.220.331)
- ↑1 O. C. Marsh. 1892. Notes on Triassic Dinosauria. American Journal of Science 43:543-546 (https://doi.org/10.2475/ajs.s3-43.258.543)
- ↑1 O. C. Marsh. 1891. Notice of new vertebrate fossils. The American Journal of Science, series 3 42:265-269 (https://doi.org/10.2475/ajs.s3-42.249.265)
- ↑1 2 3 P. M. Galton. 1976. Prosauropod dinosaurs (Reptilia: Saurischia) of North America. Postilla 169:1-98
- ↑1 T. J. Fedak and P. M. Galton. 2007. New information on the braincase and skull of Anchisaurus polyzelus (Lower Jurassic, Connecticut, USA; Saurischia: Sauropodomorpha): implications for sauropodomorph systematics. In P. M. Barrett & D. J. Batten (eds.), Evolution and Palaeobiology of Early Sauropodomorph Dinosaurs. Special Papers in Palaeontology 77:245-260
- ↑1 O. Abel. 1908. Angriffswaffen und Verteidigungsmittell fossiler Wirbeltiere [Assault weapons and defenses of fossil vertebrates]. Verhandlungen der Kaiserlich-Königlichen Zoologisch-Botanischen Gesellschaft in Wien 58:207-217
- ↑1 2 3 A. M. Yates. 2010. A revision of the problematic sauropodomorph dinosaurs from Manchester, Connecticut and the status of Anchisaurus Marsh. Palaeontology 53(4):739-752 (https://doi.org/10.1111/j.1475-4983.2010.00952.x)
- ↑1 2 3 J. S. Tweet and V. L. Santucci. 2011. Anchisaurus from Springfield Armory. Proceedings of the 9th Conference on Fossil Resources, Kemmerer, WY. Brigham Young University Geology Studies 49(A):75-82
- ↑1 2 E. Hitchcock. 1855. Shark remains from the Coal Formation of Illinois, and bones and tracks from the Connecticut River Sandstone. The American Journal of Science and Arts, series 2 20(60):416-417
- ↑1 O. C. Marsh. 1882. Classification of the Dinosauria. American Journal of Science 23:81-86 (https://doi.org/10.2475/ajs.s3-23.133.81)
- ↑1 O. C. Marsh. 1885. Names of extinct reptiles. American Journal of Science 29:169
- ↑1 2 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 (https://doi.org/10.1037/12151-000)
- ↑1 E. Hitchcock. 1865. Appendix [A]. Bones of Megadactylus polyzelus. Supplement to the Ichnology of New England. A Report to the Government of Massachusetts in 1863
- ↑1 E. D. Cope. 1870. Synopsis of the Extinct Batrachia, Reptilia and Aves of North America. Part II. Transactions of the American Philosophical Society, New Series 14:105-235 (https://doi.org/10.2307/1005355)
- ↑1 C. H. Hitchcock. 1898. Recent progress in ichnology. Geology of Old Hampshire County, Massachusetts Comprising Franklin, Hampshire, and Hampden Counties. Monographs of the United States Geological Survey 29:400-406
- ↑1 J. S. Tweet and V. L. Santucci. 2018. An inventory of non-avian dinosaurs from National Park Service areas. Fossil Record 6. New Mexico Museum of Natural History and Science Bulletin 79:703-730
- ↑1 2 N. Smith. 1820. Fossil bones found in red sandstone. The American Journal of Science and Arts 2:146-147
- ↑1 R. S. Lull. 1912. The life of the Connecticut Trias. The American Journal of Science, series 4 33:397-422 (https://doi.org/10.2475/ajs.s4-33.197.397)
- ↑1 J. B. Delair and W. A. S. Sarjeant. 2002. The earliest discoveries of dinosaurs: the records re-examined. Proceedings of the Geologists' Association 113:185-197 (https://doi.org/10.1016/s0016-7878(02)80022-0)
- ↑1 E. Hitchcock. 1841. Final Report on the Geology of Massachusetts (https://doi.org/10.5962/bhl.title.139900)
- ↑1 C. M. Sternberg. 1963. Early discoveries of dinosaurs. National Museum of Canada Natural History Papers 21:1-4
- ↑1 2 A. Davis. 1974. Dinosaurland. Rocks and Minerals 49(7/8):438-440 (https://doi.org/10.1080/00357529.1974.11762259)
- ↑1 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 (https://doi.org/10.3374/014.053.0201)
- ↑1 2 K. P. Perry. 1937. Dinosaur tracks in Connecticut. Foot prints in the sands of time. Rocks and Minerals 12:74-75
- ↑1 2 D. A. Wells and G. Bliss. 1850. The Annual of Scientific Discovery: or, Year-Book of Facts in Science and Art
Galerie d'image
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