Harvard MCZ 19860 Site, Cashen Ranch (Cretaceous to of the United States)

Where: Big Horn County, Montana (45.4° N, 108.2° W: paleocoordinates 44.7° N, 66.0° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Himes Member (Cloverly Formation), Middle Albian to Middle Albian (109.0 - 93.5 Ma)

• Unit VII

•D'Emic et al. 2019: New data reported in this study suggest that deposition of the Cloverly Formation spanned the Valanginian–Cenomanian stages (ca. 140 Ma–98 Ma), a longer time interval than the commonly cited Aptian–Albian depositional timeframe. In the mid–late Albian to early Cenomanian (ca. 109–98 Ma), sediment sourced from the east was deposited as the Himes Member and Greybull Sandstone.

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Preservation: concretion

Collected by C. Schaff in 1974; reposited in the MCZ

Collection methods: surface (float), mechanical,

Primary reference: F. A. Jenkins, Jr. and C. R. Schaff. 1988. The Early Cretaceous Mammal Gobiconodon (Mammalia, Triconodonta) from the Cloverly Formation in Montana. Journal of Vertebrate Paleontology 8(1):1-24 [J. Alroy/J. Alroy/J. Ju]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 14377: authorized by John Alroy, entered by John Alroy on 15.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• apparently only one mammalian specimen
Mammalia
 Eutriconodonta - Gobiconodontidae
Gobiconodon ostromi Jenkins and Schaff 1988 mammal