AMNH 31-6, Cashen Pocket (Cretaceous to of the United States)

Also known as Cashen Ranch

Where: Big Horn County, Montana (45.4° N, 108.1° W: paleocoordinates 44.7° N, 65.8° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Himes Member (Cloverly Formation), Middle Albian to Middle Albian (109.0 - 93.5 Ma)

• lower part of member = Ostrom's Unit VI; possible uppermost unit V

•D'Emic et al. 2019: New data reported in this study suggest that deposition of the Cloverly Formation spanned the Valanginian–Cenomanian stages (ca. 140 Ma–98 Ma), a longer time interval than the commonly cited Aptian–Albian depositional timeframe. In the mid–late Albian to early Cenomanian (ca. 109–98 Ma), sediment sourced from the east was deposited as the Himes Member and Greybull Sandstone.

• bed-level stratigraphic resolution

Environment/lithology: "channel"; coarse-grained, yellow sandstone

Size class: macrofossils

Collected by Brown & Kaisen in 1931; reposited in the AMNH

Collection methods: quarrying, mechanical,

Primary reference: Anonymous. 1931. Dinosaur skeleton from Montana. Natural History 31:559 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 25076: authorized by Matthew Carrano, entered by Matthew Carrano on 27.08.2002, edited by Kaitlin Maguire

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Ornithischia - Nodosauridae
"Sauropelta edwardsi" = Sauropelta edwardsorum
"Sauropelta edwardsi" = Sauropelta edwardsorum Ostrom 1970 ankylosaur
 Ornithischia -
Tenontosaurus tilletti Ostrom 1970 ornithopod
AMNH 3012, 3022, 3023