DEW-22 Ornithomimid (Cretaceous of the United States)

Also known as Deer's Ears West

Where: Butte County, South Dakota (46.0° N, 103.2° W: paleocoordinates 52.1° N, 76.7° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Hell Creek Formation (Montana Group), Late/Upper Maastrichtian (70.6 - 66.0 Ma)

• in the "Big Sandy Zone"

• bed-level stratigraphic resolution

Environment/lithology: channel lag; pebbly, gray, red, sandy conglomerate

• "a 1 meter thick, basal lag of well-sorted, light gray to orange, sandy, clay pebble conglomerate that is locally fossiliferous"

Size classes: macrofossils, mesofossils

Collected by W. Stein

Collection methods: surface (float), surface (in situ),

Primary reference: W. W. Stein. 2021. The paleontology, geology and taphonomy of the Tooth Draw Deposit; Hell Creek Formation (Maastrictian), Butte County, South Dakota. The Journal of Paleontological Sciences JPS.C.21:0001:1-108 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 224491: authorized by Matthew Carrano, entered by Matthew Carrano on 09.03.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Osteichthyes
 Osteichthyes -
Osteichthyes indet.
Osteichthyes indet. Huxley 1880 bony fish
"fish"
Reptilia
 Testudinata -
Testudinata indet.
Testudinata indet. Oppel 1811 turtle
 Theropoda -
Theropoda indet.
Theropoda indet. theropod
pedal phalanx
 Theropoda - Ornithomimidae
Ornithomimidae indet.
Ornithomimidae indet. Marsh 1890 ornithomimid
"associated remains of a small ornithomimid"
 Ornithischia -
Thescelosaurus sp.
Thescelosaurus sp. Gilmore 1913 ornithopod
 Crocodylia -
Crocodylia indet.
Crocodylia indet. Owen 1842 crocodilian