Crawford Ranch (Cretaceous of the United States)

Also known as Fish Creek, Mud Creek

Where: Wheatland County, Montana (46.3° N, 109.6° W: paleocoordinates 53.4° N, 76.6° W)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Bearpaw Shale Formation (Montana Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• fossils from "lower Bearpaw Shale" - could be Judith River Fm.

• group of beds-level stratigraphic resolution

Environment/lithology: marine; concretionary shale and limestone

• "Dark, soft shales predominate. There are occasional thin bands of sand and many brownish concretions which break into angular fragments. These sometimes contain marine fossils and sometimes a network of calcite seams...Some hard limestone concretions are crowded with these.

Size class: macrofossils

Preservation: soft parts

Collected by E. Douglass, M. Farr, A. Silberling in 1901, 1904; reposited in the CM, YPM

Collection methods: quarrying, mechanical,

Primary reference: E. Douglass. 1902. Dinosaurs in the Fort Pierre Shales and underlying beds in Montana. Science 15(366):31-32 [M. Carrano/M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 26766: authorized by Matthew Carrano, entered by Matthew Carrano on 30.10.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• Hadrosaurid actually listed as Hadrosaurus [Kritosaurus] notabilis
Show authors, comments, and common names
Reptilia
 Testudines - Trionychidae
Trionychidae indet.1, "Aspideretes beecheri" = Trionyx beecheri1
Trionychidae indet.1 Gray 1825 softshell turtle
CM 2417, 347
"Aspideretes beecheri" = Trionyx beecheri1 Hay 1904 softshell turtle
CM 445
 Ornithischia - Hadrosauridae
Hadrosauridae indet.3, Hadrosauridae indet.2
Hadrosauridae indet.3 Cope 1869 hadrosaurid
CM 1202
Hadrosauridae indet.2 Cope 1869 hadrosaurid
YPMPU 16969 (includes preserved integument)
1Database 2015; 2Fabbri et al. 2020; 3McIntosh 1981