Atreipus

{{Short description|Dinosaur trace fossil}}

{{Expand language|topic=Paleontology|langcode=es|date=October 2024}}

{{One source|date=October 2024}}

{{Ichnobox

|image =

|taxon = Atreipus

|authority = Olsen & Baird, 1986

|type_ichnospecies = {{extinct}}Atreipus milfordensis

|type_ichnospecies_authority = (Bock, 1952)

|subdivision_ranks = Ichnospecies

|subdivision =

• {{extinct}}Atreipus milfordensis (Bock, 1952)
• {{extinct}}Atreipus metzneri (Heller, 1952)
• {{extinct}}Atreipus sulcatus (Baird, 1957)
• {{extinct}}Atreipus acadianus Olsen & Baird, 1986

|synonyms = *Aetripus Martin & Hasiotis, 1998

}}

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.{{Cite book |last=Olsen |first=Paul E. |title=The Beginning of the Age of Dinosaurs: Faunal Change Across the Triassic-Jurassic Boundary |last2=Baird |first2=Donald |publisher=Cambridge University Press |year=1986 |isbn=978-0521367790 |editor-last=Padian |editor-first=Kevin |location=New York |pages=61-87 |chapter=The ichnogenus Atreipus and its significance for Triassic Biostratigraphy |access-date=2024-12-27 |chapter-url=https://www.ldeo.columbia.edu/~polsen/nbcp/olsen_baird_86.pdf}}