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Silesauridae

Langer et al. 2010

Les Silésauridés (Silesauridae) sont une famille fossile de dinosauriformes ayant vécu durant le Trias, et qui sont généralement considérés comme le groupe frère des dinosaures. La taxonomie de ce groupe est toutefois débattue, certains chercheurs les considérant comme des représentants basaux des dinosaures ornithischiens.

Plage temporelle
Trias
Jurassique
Crétacé
Paléogène
Néogène
252 201 145 66 0 Ma
Occurrences PBDB
40
Groupe
Dinosaures
Herbivore Vivant au sol, grégaire Terrestre
Silesauridae
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Wikimedia
PBDB Wikipedia
Classification
Dinosauria Clade non classé
Ornithischia Clade non classé
Parapredentata Clade non classé
Silesauridae Clade non classé
Sites de découverte 40 sites géolocalisés
Répartition
Principaux pays
🇺🇸 États-Unis
21
🇹🇿 Tanzanie
5
🇵🇱 Pologne
5
🇦🇷 Argentine
4
🇧🇷 Brésil
3
🇿🇲 Zambie
1
🇲🇦 Maroc
1
Formations géologiques
Chinle
17
Manda Beds
5
Chañares
4
Drawno Beds
2
Cooper Canyon
2
Ntawere
1
Santa Maria
1
Colorado City
1
Popo Agie
1
Grabowa
1
Distribution temporelle
Oxfordian (161.5–154.8 Ma)
1
Rhétien (205.7–201.4 Ma)
1
Norien (227.3–205.7 Ma)
24
Carnien (237–227.3 Ma)
5
Ladinien (241.464–237 Ma)
4
Anisien (246.7–241.464 Ma)
5
Synonymes (1)
Lewisuchinae invalid subgroup of Silesauridae
Bibliographie
Description originale
M. C. Langer, M. D. Ezcurra, and J. S. Bittencourt, F. E. Novas. 2010. The origin and early evolution of dinosaurs. Biological Reviews 85:55-110 DOI ↗
Bibliographie (24)
D. M. Lovelace, A. M. Kufner, and A. J. Fitch, K. Curry Rogers, M. Schmitz, D. M. Schwartz, A. LeClair-Diaz, L. StClair, J. Mann, R. Teran. 2025. Rethinking dinosaur origins: oldest known equatorial dinosaur-bearing assemblage (mid-late Carnian Popo Agie FM, Wyoming, USA). Zoological Journal of the Linnean Society 203:zlae153 DOI ↗
A. D. Marsh. 2025. A large silesaurid specimen from Petrified Forest National Park, U.S.A., with comments on large body sizes in latest Triassic ornithodirans. Lithodendron: The Science and History Journal of Petrified Forest National Park 2(1):1–15 DOI ↗
R. T. Müller and M. S. Garcia. 2023. A new silesaurid from Carnian beds of Brazil fills a gap in the radiation of avian line archosaurs. Scientific Reports (4981) DOI ↗
F. A. Pretto, R. T. Müller, and D. Moroab, M. Silva Garcia, V. Dutra Paes Neto, Á. A. Stock Da Rosa. 2022. The oldest South American silesaurid: New remains from the Middle Triassic (Pinheiros-Chiniquá Sequence, Dinodontosaurus Assemblage Zone) increase the time range of silesaurid fossil record in southern Brazil. Journal of South American Earth Sciences 120:104039 DOI ↗
M. D. Ezcurra, S. J. Nesbitt, and L. E. Fiorelli, J. B. Desojo. 2020. New specimen sheds light on the anatomy and taxonomy of the early Late Triassic dinosauriforms from the Chañares Formation, NW Argentina. The Anatomical Record 303(5):1393-1438 DOI ↗
A. D. Marsh and W. G. Parker. 2020. New dinosauromorph specimens from Petrified Forest National Park and a global biostratigraphic review of Triassic dinosauromorph body fossils. PaleoBios 37 DOI ↗
J. W. Martz and B. J. Small. 2019. Non-dinosaurian dinosauromorphs from the Chinle Formation (Upper Triassic) of the Eagle Basin, northern Colorado: Dromomeron romeri (Lagerpetidae) and a new taxon, Kwanasaurus williamparkeri (Silesauridae). PeerJ 7:e7551:1-71 DOI ↗
V. Sarigul, F. Agnolin, and S. Chatterjee. 2018. Description of a multitaxic bone assemblage from the Upper Triassic Post Quarry of Texas (Dockum Group), including a new small basal dinosauriform taxon. Historia Natural 8(1):5-24
T. Sulej, G. Niedźwiedzki, and M. Tałanda, D. Dróżdż, E. Hara. 2018. A new early Late Triassic non-mammaliaform eucynodont from Poland. Historical Biology
C. T. Griffin and S. J. Nesbitt. 2016. The femoral ontogeny and long bone histology of the Middle Triassic (?late Anisian) dinosauriform Asilisaurus kongwe and implications for the growth of early dinosaurs. Journal of Vertebrate Paleontology 36(3):e1111224:1-22 DOI ↗
P. M. Barrett, S. J. Nesbitt, and B. R. Peecook. 2014. A large-bodied silesaurid from the Lifua Member of the Manda beds (Middle Triassic) of Tanzania and its implications for body-size evolution in Dinosauromorpha. Gondwana Research DOI ↗
G. Niedzwiedzki, S. L. Brusatte, and T. Sulej, R. J. Butler. 2014. Basal dinosauriform and theropod dinosaurs from the mid–late Norian (Late Triassic) of Poland: implications for triassic dinosaur evolution and distribution . Palaeontology 57(6):1121-1142 DOI ↗
B. R. Peecook, C. A. Sidor, and S. J. Nesbitt, R. M. H. Smith, J. S. Steyer, K. D. Angielczyk. 2013. A new silesaurid from the upper Ntawere Formation of Zambia (Middle Triassic) demonstrates the rapid diversification of Silesauridae (Avemetatarsalia, Dinosauriformes). Journal of Vertebrate Paleontology 33(5):1127-1137 DOI ↗
C. F. Kammerer, S. J. Nesbitt, and N. H. Shubin. 2012. The first basal dinosauriform (Silesauridae) from the Late Triassic of Morocco. Acta Palaeontologica Polonica 57(2):277-284 DOI ↗
S. J. Nesbitt, C. A. Sidor, and R. B. Irmis, K. D. Angielczyk, R. M. H. Smith, L. A. Tsuji. 2010. Ecologically distinct dinosaurian sister group shows early diversification of Ornithodira. Nature 464:95-98 DOI ↗
L. F. Rinehart, S. G. Lucas, and A. B. Heckert, J. A. Spielmann, M. D. Celeskey. 2009. The paleobiology of Coelophysis bauri (Cope) from the Upper Triassic (Apachean) Whitaker quarry, New Mexico, with detailed analysis of a single quarry block. New Mexico Museum of Natural History and Science Bulletin 45:1-260
J. Ferigolo and M. C. Langer. 2007. A Late Triassic dinosauriform from south Brazil and the origin of the ornithischian predentary bone. Historical Biology 19(1):23-33 DOI ↗
T. Sulej and F. Majer. 2005. The temnospondyl amphibian Cyclotosaurus from the Upper Triassic of Poland. Palaeontology 48(1):157-170 DOI ↗
J. Dzik. 2003. A beaked herbivorous archosaur with dinosaur affinities from the early Late Triassic of Poland. Journal of Vertebrate Paleontology 23(3):556-574 DOI ↗
R. R. Rogers, A. B. Arcucci, and F. Abdala, P. C. Sereno, C. A. Forster, C. L. May. 2001. Paleoenvironment and taphonomy of the Chanares Formation tetrapod assemblage (Middle Triassic), northwestern Argentina: spectacular preservation in volcanogenic concretions. Palaios 16:461-481 DOI ↗
R. M. Sullivan and S. G. Lucas. 1999. Eucoelophysis baldwini, a new theropod dinosaur from the Upper Triassic of New Mexico, and the status of the original types of Coelophysis. Journal of Vertebrate Paleontology 19(1):81-90 DOI ↗
A. B. Arcucci. 1987. Un nuevo Lagosuchidae (Thecodontia-Pseudosuchia) de la fauna de Los Chañares (Edad Reptil Chañarense, Triasico Medio), La Rioja, Argentina [A new Lagosuchidae (Thecodontia-Pseudosuchia) from Los Chañares fauna (Chanarian Reptile Age, Middle Triassic), La Rioja Province, Argentina]. Ameghiniana 24(1-2):89-94
S. Chatterjee. 1984. A new ornithischian dinosaur from the Triassic of North America. Naturwissenschaften 71:630-631 DOI ↗
A. S. Romer. 1972. The Chañares (Argentina) Triassic reptile fauna; XIV, Lewisuchus admixtus, gen. et sp. nov., a further thecodont from the Chañares beds. Breviora 390:1-13