southeast of Flagstaff Peak [Paleocene] (Paleocene of the United States)

Where: Emery County, Utah (39.1° N, 111.3° W: paleocoordinates 46.4° N, 89.8° W)

• coordinate stated in text

• outcrop-level geographic resolution

When: North Horn Formation, Puercan (66.0 - 63.3 Ma)

• bed-level stratigraphic resolution

Environment/lithology: terrestrial; gray shale

• "8. Shale, weathers dark gray, mottled yellow-ochre

•9. Shale, weathers light gray"

Size classes: macrofossils, mesofossils

Collected by W. R. Kastelic, K. E. Scott, E. M. Spieker in 1959

Collection methods: surface (float), surface (in situ),

Primary reference: E. M. Spieker. 1960. The Cretaceous-Tertiary boundary in Utah. In T. Sorgenfrei (ed.), International Paleontological Union, International Geological Congress (21st session) 14-24 [M. Carrano/M. Carrano]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 224186: authorized by Matthew Carrano, entered by Matthew Carrano on 25.01.2022

Creative Commons license: CC BY (attribution)

Taxonomic list

Show authors, comments, and common names
Mammalia
 Condylarthra -
Desmatoclaenus sp.
Desmatoclaenus sp. Gazin 1941 placental
 Theriamorpha - Periptychidae
Periptychidae indet., Anisonchus cf. oligistus, Ectoconus cf. maiusculus
Periptychidae indet. Cope 1882 condylarth
"large, but undeterminable"
Anisonchus cf. oligistus Gazin 1941 condylarth
"This could possibly be the species. A. onostus which is near in size to A. oligistus but whose upper teeth are not known"