Where: Montana (48.5° N, 112.7° W: paleocoordinates 56.2° N, 78.8° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: Middle Member (Two Medicine Formation), Middle Campanian (83.5 - 70.6 Ma)

• bed-level stratigraphic resolution

Environment/lithology: fluvial; mudstone and lithified, lenticular sandstone

Size class: macrofossils

Preservation: cast, trace

Reposited in the TMP

Primary reference: D. K. Zelenitsky and F. Therrien. 2008. Unique maniraptoran egg clutch from the Upper Cretaceous Two Medicine Formation of Montana reveals theropod nesting behaviour. Palaeontology 51(6):1253-1259 [J. Alroy/A. Garcia Selles]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 138573: authorized by John Alroy, entered by Albert Garcia Selles on 21.01.2013

Creative Commons license: CC BY (attribution)