Baldy Butte (Cretaceous of the United States)

Also known as UCMP V-72215

Where: Garfield County, Montana (47.6° N, 107.1° W: paleocoordinates 54.3° N, 80.2° W)

• coordinate based on unpublished field data

• small collection-level geographic resolution

When: Hell Creek Formation (Montana Group), Lancian (70.6 - 66.0 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: mesofossils

Reposited in the UCMP

Collection methods: surface (float),

Primary reference: J. D. Archibald. 1982. A study of Mammalia and geology across the Cretaceous-Tertiary boundary in Garfield County, Montana. University of California Publications in Geological Sciences 122:1-286 [J. Alroy/J. Alroy/M. Carrano]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14507: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Matthew Carrano

Creative Commons license: CC BY (attribution)

Taxonomic list

Reptilia
 Theropoda - Caenagnathidae
Chirostenotes sp.1 Gilmore 1924 maniraptoran
 Theropoda - Dromaeosauridae
Richardoestesia cf. gilmorei2 Currie et al. 1990 maniraptoran
UCMP 120153
 Sauria -
Sauria indet.1 diapsid
? Sauria indet.1 diapsid
Mammalia
 Polydolopimorphia - Glasbiidae
Glasbius twitchelli Archibald 1982 metatherian