Genus
Ichnogenus Formal taxon Extinct

Atreipus

Olsen and Baird 1986

Atreipus is an ichnogenus or trace fossil attributed to early Ornithischian dinosaurs. Its significance for Triassic biostratigraphy has earned it some fame. Reptile footprint faunules from the early Mesozoic Newark Supergroup of eastern North America.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
8
Group
Dinosaures
Carnivore Ground dwelling, solitary Terrestrial
Atreipus
click to enlarge
Fossil samples – e.g. ‘primitive’ bony fish (1, 2), a skull of a temnospondyl ‘amphibian’ (probably a metoposauroid) in dorsal view (3), a skull of an archosaur of the crocodile lineage (probably a phytosaur) in palatal view (4), holotype of the “gliding reptile” Icarosaurus siefkeri [1] (5) and Atreipus-Grallator-type dinosaur tracks (bottom right) – from the Newark Supergroup, i.e. a series of mainly Late Triassic to Early Jurassic sedimentary rocks of eastern North America ↑ Edwin H. Colbert: A gliding reptile from the Triassic of New Jersey. American Museum Novitates, 2230. American Museum of Natural History, New York 1966, digitallibrary.amnh.org, cf. fig. 3 therein. © User:Piotrus · CC BY-SA 3.0 · Wikimedia
Atreipus
Atreipus
Atreipus
PBDB ↗ Wikipedia ↗
Classification
Dinosauria Unranked clade
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Theropoda Unranked clade
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Grallatoridae Family
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Atreipus Genus
Fossil sites 8 geolocated sites
Distribution
Top countries
🇺🇸 United States
4
🇲🇦 Morocco
2
🇵🇱 Poland
1
🇮🇹 Italy
1
Geological formations
Timezgadiouine
2
Passaic
2
Travenanzes
1
Stockton
1
Temporal distribution
Norian (227.3–205.7 Ma)
4
Carnian (237–227.3 Ma)
3
Anisian (247–241.464 Ma)
1
Species (1)
Tridactylus machouensis 237 Ma
Synonyms (1)
Tridactylus subjective synonym of Atreipus
Images 3
Bibliography
Original description
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
Bibliography (7)
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
H. Klein, S. Voigt, and H. Saber, J. W. Schneider, A. Hminna, J. Fischer, A. Lagnaoui, A. Brosig. 2011. First occurrence of a Middle Triassic tetrapod ichnofauna from the Argana Basin (Western High Atlas, Morocco). Palaeogeography, Palaeoclimatology, Palaeoecology 307(1-4):218-231 DOI ↗
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 DOI ↗
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
P. E. Olsen and J .J. Flynn. 1989. Field guide to the vertebrate paleontology of Late Triassic age rocks in the southwestern Newark Basin (Newark Supergroup, New Jersey and Pennsylvania). The Mosasaur 4:1-43
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
P. E. Biron and J.-M. Dutuit. 1981. Figurations sédimentaires et traces d'activité au sol dans le Trias de la formation d'Argana et de l'Ourika (Maroc) [Sedimentary patterns and soil activity traces in the Triassic of the Argana and Ourika formations (Morocco)]. Bulletin du Muséum National d'Histoire Naturelle, 4e série, section C 3(4):399-427