Where: Alberta, Canada (50.7° N, 111.6° W: paleocoordinates 58.0° N, 76.2° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Oldman Formation (Belly River Group), Middle Campanian (83.5 - 70.6 Ma)

• Upper Cretaceous Oldman Formation (Judithian or mid-Campanian in age)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Collection methods: UALVP collection

Primary reference: K. -Q. Gao and R. C. Fox. 1998. New choristoderes (Reptilia: Diapsida) from the Upper Cretaceous and Palaeocene, Alberta and Saskatchewan, Canada, a phylogenetic relationships of Choristodera. Zoological Journal of the Linnean Society 124:303-353 [R. Benson/R. Benson]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 117922: authorized by Roger Benson, entered by Roger Benson on 28.09.2011

Creative Commons license: CC BY (attribution)