Purple Shale Beds, UCMP V-5714 (Cretaceous of the United States)

Where: Niobrara County, Wyoming (43.1° N, 104.6° W: paleocoordinates 50.3° N, 78.7° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Lance Formation, Maastrichtian (72.1 - 66.0 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; gray, red, blue shale

• "a series of gray, red, and purple banded shales"

Size classes: macrofossils, mesofossils

Reposited in the UCMP

Collection methods: surface (float), mechanical, sieve,

Primary reference: R. Estes. 1964. Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming. University of California Publications in Geological Sciences 49:1-187 [J. Alroy/M. Sommers/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 57159: authorized by Matthew Carrano, entered by Kaitlin Maguire on 07.12.2005, edited by Roger Benson

Creative Commons license: CC BY (attribution)

Taxonomic list

 Lepisosteiformes - Lepisosteidae
 Testudines - Trionychidae
Trionychidae sp., "Aspideretes beecheri" = Trionyx beecheri
Trionychidae sp. Gray 1825 softshell turtle
Voucher: UCMP 72913
"Aspideretes beecheri" = Trionyx beecheri Hay 1904 softshell turtle
 Testudines - Pantrionychidae
Helopanoplia sp. Hay 1908 turtle
Voucher: UCMP 173376
 Avetheropoda -
cf. Dryptosaurus sp. Marsh 1877 coelurosaur
 Crocodylia -
"Leidyosuchus sternbergi" = Borealosuchus sternbergii
"Leidyosuchus sternbergi" = Borealosuchus sternbergii Gilmore 1910 crocodilian