8 miles upriver from Devon bridge (Cretaceous of Canada)

Where: Alberta, Canada (53.3° N, 113.9° W: paleocoordinates 61.0° N, 76.9° W)

• coordinate estimated from map

• outcrop-level geographic resolution

When: Horseshoe Canyon Formation (Edmonton Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• bonebed ca. 15 ft. above river level. "equivalent" to Horseshoe Canyon Fm.

•For revised age stratigraphy of the Horseshoe Canyon Formation, see Eberth and Braman 2012 and Eberth et al. 2020

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; poorly lithified, bentonitic, ferruginous, gray mudstone

• "a soft, medium grey, bentonitic mudstone...The entire bone was encrusted in several inches of very hard, fine-grained, light grey ironstone containing numerous minute carbonized plant fragments."

Size classes: macrofossils, mesofossils

Collected by E. Stoyko, D. Tanke, T. Tokaryk in 1981; reposited in the TMP

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

Primary reference: D. H. Tanke. 1984. Dinosaurs of the Devon area with reference to a large hadrosaur femur. Fossils Quarterly 3(2):19-30 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 152403: authorized by Matthew Carrano, entered by Matthew Carrano on 20.11.2013

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Reptilia
 Ornithischia - Ceratopsidae
Arrhinoceratops sp.
Arrhinoceratops sp. Parks 1925 ceratopsid
TMP P81.48.6; "agrees in all respects"
 Ornithischia - Hadrosauridae
? Edmontosaurus sp.
? Edmontosaurus sp. Lambe 1917 hadrosaurine
TMP P81.48.5, P81.48.2; "possible" and "almost certainly"
 Theropoda - Tyrannosauridae
Tyrannosauridae indet.
Tyrannosauridae indet. Osborn 1906 tyrannosaurid
shed teeth
 Testudines - Trionychidae
Trionychidae indet.
Trionychidae indet. Gray 1825 softshell turtle
TMP P81.48.7