UCM locality 92179 (Eocene of the United States)

Also known as Florissant

Where: Teller County, Colorado (38.9° N, 105.3° W: paleocoordinates 40.4° N, 97.0° W)

• coordinate stated in text

• small collection-level geographic resolution

When: Florissant Formation, Late/Upper Chadronian (37.2 - 33.9 Ma)

• "upper Eocene (Chadronian)" and in the "lower mudstone unit... at the 29-meter level" of Evanoff et al. 2001

• bed-level stratigraphic resolution

Environment/lithology: "channel"; mudstone

• unit "is interpreted as representing stream deposits"
• "mudstone"

Size class: mesofossils

Reposited in the UCM

Collection methods: bulk, sieve

• material was "recovered through dry-screening" and reposited at UCM in collections owned by the Florissant Fossil Beds National Monument

•other mammals surely present but not discussed

Primary reference: K. J. Lloyd and J. J. Eberle. 2008. A new talpid from the late Eocene of North America. Acta Palaeontologica Polonica 53(3):539-543 [J. Alroy/J. Alroy]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 85117: authorized by John Alroy, entered by John Alroy on 29.11.2008, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• possibly the same as the Florissant mammal bed (collection 16968)
Mammalia
 Rodentia - Eomyidae
Paradjidaumo trilophus1 Cope 1873 rodent
Adjidaumo minimus2 Matthew 1903 rodent
 Rodentia - Eutypomyidae
Eutypomys parvus2 Lambe 1908 rodent
 Rodentia - Ischyromyidae
Pelycomys sp.1 Galbreath 1953 rodent
Pelycomys "sp. A"2 Galbreath 1953 rodent
 Lagomorpha - Leporidae
Palaeolagus sp.1 Leidy 1856 rabbit
 Lipotyphla - Geolabididae
Centetodon magnus2 Clark 1936 placental
 Lipotyphla - Talpidae
Oreotalpa florissantensis n. gen. n. sp. Lloyd and Eberle 2008 mole
 Perissodactyla - Brontotheriidae
Megacerops sp.2 Leidy 1870 brontothere
 Perissodactyla - Equidae
Mesohippus sp.2 Marsh 1875 anchitheriine horse
 Tribosphenida - Heterosoricidae
Domnina cf. thompsoni2 Simpson 1941 placental
 Ungulata - Protoceratidae
Protoceratidae indet.1 Marsh 1891 protoceratid
Pseudoprotoceras longinaris1 Cook 1934 protoceratid
 Ungulata - Leptomerycidae
Leptomeryx sp.2 Leidy 1853 ruminant