La Amarga
Description
Source: Wikipédia
The La Amarga Formation is a geologic formation with outcrops in the Argentine provinces of Río Negro, Neuquén, and Mendoza. It is the oldest Cretaceous terrestrial formation in the Neuquén Basin.
The type locality is La Amarga Arroyo and China Muerta Hill. The La Amarga Formation unconformably overlies the marine Agrio Formation of the Mendoza Group. It is in turn overlain by the Lohan Cura Formation, separated by another unconformity.
Découvertes
Source: The Paleobiology Database
Site(s) correspondant(s) à cette formation: 7
La Amarga (main site) : Neuquén - Catan Lil 5970 16547 16627 29093 34689 44370 46299 63573 66469 2.5 km SE of bridge over the La Amarga Arroyo on National Route no. 40, Catan Lil department, Neuquén province, close to China Muerta Hill and near the house of Mr. Crespo. Stegosaur cervical from ca. 100 m from type of A. cazaui.- Amargasaurus cazaui
- Diplodocidae
- Titanosauriformes
- Stegosauria identifié comme Amargastegos brevicollus n. gen. n. sp.
- La Amarga (mammal site) : Neuquén - Catan Lil 9952 46299 76293 2.5 km SE of bridge over the La Amarga Arroyo on National Route no. 40, Catan Lil department, Neuquén province, close to China Muerta Hill and near the house of Mr. Crespo
- Ligabueino type, La Amarga : Neuquén - Catan Lil 16547 44370 La Amarga, 70 km S of Zapala, Neuquén province
- Puesto Morales, La Picaza : Neuquén - ? 19193 29093 34689 Puesto Morales, La Picaza, S-central Neuquén province
- La Amarga (site 4) : Neuquén - Catan Lil 9772 16547 29093 76290 85825 93350 near Crespo farm, along La Amarga stream, in the vicinity of a hill and the bridge on NR 40 over La Amarga Arroyo
- La Amarga (site 1) : Neuquén - Catan Lil 29093 66437 Located at the foot of the hill that rises over the left bank of the La Amarga stream, 2.5 km southeast from the bridge of National Route 40
- Near to La Amarga main site : Neuquén - ? 73620 "Near to the Amargasaurus cazaui quarry"
Publication(s)
La base comprend 18 publication(s).
Source: The Paleobiology Database
- ↑1 2 J. F. Bonaparte. 1984. I dinosauri dell’Argentina [. Sulle Orme dei Dinosauri
- ↑1 L. Salgado and J. F. Bonaparte. 1991. Un nuevo saurópodo Dicraeosauridae, Amargasaurus cazaui gen. et sp. nov., de la Formación La Amarga, Neocomiano de la provincia del Neuquén, Argentina [Amargasaurus cazaui gen. et sp. nov., a new dicraeosaurid sauropod from the La Amarga Formation, Neocomian of Neuquén province, Argentina]. Ameghiniana 28(3-4):333-346
- ↑1 2 3 4 J. F. Bonaparte. 1996. Cretaceous tetrapods of Argentina. Münchner Geowissenschaften Abhandlungen 30:73-130
- ↑1 J. F. Bonaparte. 1986. History of terrestrial Cretaceous vertebrates of Gondwana. Simposio Bioestratigrafía del Paleozoico Inferior: IV Congreso Argentino de Paleontología y Bioestratigrafía, Mendoza, Argentina 2:63-95
- ↑1 2 3 4 5 S. Apesteguía. 2007. The sauropod diversity of the La Amarga Formation (Barremian), Neuquén (Argentina). Gondwana Research 12:533-546 (https://doi.org/10.1016/j.gr.2007.04.007)
- ↑1 2 R. D. Juárez Valieri, J. O. Calvo, and S. D. Rios Díaz. 2011. Sauropods crossing formations: biostratigraphical implications for Patagonian faunal assemblages. Dinosaurios y Paleontología desde América Latina. Anales del III Congreso Latinoamericano de Paleontología. Editorial de la Universidad Nacional de Cuyo, Neuquén
- ↑1 2 H. A. Leanza, S. Apesteguia, and F. E. Novas, M. S. de la Fuente. 2004. Cretaceous terrestrial beds from the Neuquen Basin (Argentina) and their tetrapod assemblages. Cretaceous Research 25:61-87 (https://doi.org/10.1016/j.cretres.2003.10.005)
- ↑1 2 X. Pereda-Suberbiola, P. M. Galton, and H. Mallison, F. E. Novas. 2013. A plated dinosaur (Ornithischia, Stegosauria) from the Early Cretaceous of Argentina, South America: an evaluation. Alcheringa 37(1):65-78 (https://doi.org/10.1080/03115518.2012.702531)
- ↑1 R. E. Ulansky. 2014. Evolyutsiya ctegozavrov (Dinosauria; Ornithischia) [Evolution of the stegosaurs (Dinosauria; Ornithischia)]. Dinologia
- ↑1 2 J. F. Bonaparte. 1986. Sobre Mesungulatum houusayi y nuevos mamíferos Cretácicos de Patagonia, Argentina [On Mesungulatum houssayi and new Cretaceous mammals from Patagonia, Argentina]. Actas del IV Congreso Argentino de Paleontología y Biostratigrafía 2:48-61
- ↑1 S. Apesteguía, P. A. Gallina, and J. I. Canale, F. Riguetti, J. P. Garderes. 2015. Nuevos restos de Stegosauria (Ornithischia, Thyreophora) del Cretácico Inferior temprano de Neuquén: el registro más antiguo de Sudamérica [New remains of Stegosauria (Ornithischia, Thyreophora) from the early Lower Cretaceous of Neuquén: the oldest record in South America]. XXIX Jornadas Argentinas de Paleontología de Vertebrados. Resúmenes. Ameghiniana 52(4 (suppl.)):5
- ↑1 2 L. Salgado, I. d. S. Carvalho, and A. C. Garrido. 2006. Zapalasaurus bonapartei, un nuevo saurópodo de La Formación La Amarga (Cretacico Inferior), noroeste de Patagonia, Provincia de Neuquén, Argentina [Zapalasaurus bonapartei, a new sauropod from the La Amarga Formation (Lower Cretaceous), northwestern Patagonia, Neuquén province, Argentina]. Géobios 39:695-707 (https://doi.org/10.1016/j.geobios.2005.06.001)
- ↑1 2 S. B. Montanelli. 1987. Presencia de Pterosauria (Reptilia) en la Formación La Amarga (Hauteriviano–Barremiano), Neuquén, Argentina [Presence of Pterosauria (Reptilia) in the La Amarga Formation (Hauterivian-Barremian), Neuquén, Argentina]. Ameghiniana 24(1-2):109-113
- ↑1 L. M. Ibiricu, G. A. Casal, and R. D. Martínez, M. C. Lamanna, M. Luna, L. Salgado. 2015. New material of Katepensaurus goicoecheai (Sauropoda: Diplodocoidea) and its significance for the morphology and evolution of Rebbachisauridae. Ameghiniana 52(4):430-446 (https://doi.org/10.5710/AMGH.24.04.2015.2830)
- ↑1 L. N. Lerzo. 2024. Redescription of the key specimen MACN PV 35: Laminar anatomy and hyposphene-hypantrum in an early rebbachisaurid (Dinosauria, Sauropoda) from Patagonia, Argentina. Cretaceous Research 153:105689 (https://doi.org/10.1016/j.cretres.2023.105689)
- ↑1 P. D. Mannion and A. J. Moore. 2025. Critical reappraisal of a putative dicraeosaurid sauropod dinosaur from the Middle Jurassic of Gondwana and a revised view of diplodocoid evolutionary relationships and biogeography. Journal of Systematic Palaeontology 23(1):2550760 (https://doi.org/10.1080/14772019.2025.2550760)
- ↑1 P. A. Gallina. 2016. Reappraisal of the Early Cretaceous sauropod dinosaur Amargatitanis macni (Apesteguía, 2007), from northwestern Patagonia, Argentina. Cretaceous Research 64:79-87 (https://doi.org/10.1016/j.cretres.2016.04.002)
- ↑1 2 G. J. Windholz, M. A. Baiano, and F. Bellardini, A. Garrido. 2021. New Dicraeosauridae (Sauropoda, Diplodocoidea) remains from the La Amarga Formation (Barremian–Aptian, Lower Cretaceous), Neuquén Basin, Patagonia, Argentina. Cretaceous Research 117:104629 (https://doi.org/10.1016/j.cretres.2020.104629)
Galerie d'image
Pas d'image.