Also known as C. irvinensis type site

Where: Alberta, Canada (50.0° N, 110.3° W: paleocoordinates 57.0° N, 75.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Dinosaur Park Formation (Belly River Group), Late/Upper Campanian (83.5 - 70.6 Ma)

• upper Dinosaur Park Formation, within 2 m of Lethbridge Coal Zone (top of Fm.)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collected by L. Lindoe & W. Langston in 1958; reposited in the NMC

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

Primary reference: L. S. Russell. 1966. Dinosaur hunting in western Canada. Royal Ontario Museum, Life Sciences Contribution 70:1-37 [M. Carrano/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 24891: authorized by Matthew Carrano, entered by Matthew Carrano on 22.08.2002

Creative Commons license: CC BY (attribution)