Antlers Formation (OMNH V212) (Cretaceous to of the United States)

Also known as DUPLICATE REF 1219 or 1230

Where: Atoka County, Oklahoma (34.4° N, 96.1° W: paleocoordinates 31.9° N, 50.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: middle Member (Antlers Formation), Late/Upper Aptian to Late/Upper Aptian (122.5 - 109.0 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size classes: macrofossils, mesofossils

Primary reference: R. L. Cifelli, J. D. Gardner, R. L. Nydam and D. L. Brinkman. 1997. Additions to the vertebrate fauna of the Antlers Formation (Lower Cretaceous), southeastern Oklahoma. Oklahoma Geology Notes 57(4):124-131 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14374: authorized by John Alroy, entered by John Alroy on 15.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

 Hybodontiformes - Hybodontidae
? Hybodus sp. Agassiz 1837 elasmobranch
 Lepisosteiformes - Lepisosteidae
? Lepisosteidae indet. Cuvier 1825 gar
 Semionotiformes - Semionotidae
? Semionotidae indet. Woodward 1890
 Avetheropoda - Dromaeosauridae
Deinonychus antirrhopus Ostrom 1969 coelurosaur
 Neornithischia -
Tenontosaurus sp. Ostrom 1970 bird foot dinosaur
 Loricata -
Bernissartia sp. Dollo 1883 crocodilian
 Eutriconodonta - Triconodontidae
Astroconodon cf. denisoni Patterson 1951 mammal