Bighorn Basin (non-specific Wasatch) (Eocene of the United States)

Also known as Big Horn Basin

Where: Bighorn County, Wyoming (44.3° N, 108.2° W: paleocoordinates 49.0° N, 91.0° W)

• coordinate based on nearby landmark

When: Willwood Formation, Wasatchian (55.8 - 50.3 Ma)

• Previously Wasatch Fm, subsequently renamed as Willwood Formation in the early 1940s

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Collected by AMNH in 1911; reposited in the AMNH

Primary reference: C. W. Gilmore. 1928. Fossil lizards of North America. Memoirs of the National Academy of Sciences 22(3):1-201 [J. Head/J. Head/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 180111: authorized by Paul Barrett, entered by Terri Cleary on 08.07.2016, edited by Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Testudines - Emydidae
Emys sp.1 Dumeril 1806 pond turtle
shell
 Squamata - Anguidae
Glyptosaurinae indet.3 Marsh 1872 squamates
AMNH 5176, right mandible fragment
Glyptosaurus sp.2 Marsh 1871 squamates
AMNH 5176, portions of two dentaries and anterior tip of frontals
"cf. Eoglyptosaurus donohoei" = Glyptosaurus sylvestris3 Marsh 1871 squamates
YPM 8422, frontal, parietal, part thoracic vertebra, un-ID'd bone fragment
Glyptosaurini indet.3 Sullivan 1979 squamates
AMNH 11054, anterior part of frontal
 Crocodylia - Crocodylidae
"Crocodilus sp." = Crocodylus1
"Crocodilus sp." = Crocodylus1 Laurenti 1768 crocodile
mandibles with teeth