West Easter Lily (Eocene of the United States)

Also known as MV 7913, MV 17915, MV 8105, MV 8111

Where: Jefferson County, Montana (46.0° N, 112.0° W: paleocoordinates 47.8° N, 103.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Dunbar Creek Member (Renova Formation), Chadronian (37.2 - 33.9 Ma)

Environment/lithology: terrestrial

Primary reference: A. R. Tabrum, D. R. Prothero, and D. Garcia. 1996. Magnetostratigraphy and biostratigraphy of the Eocene-Oligocene transition, southwestern Montana. In D. R. Prothero and R. J. Emry (eds.), The Terrestrial Eocene-Oligocene Transition in North America 278-311 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 17041: authorized by John Alroy, entered by John Alroy on 12.04.1997, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

• entire section is of reversed polarity
general area, stratigraphic origin unknown, possibly Orellan: Cryptoryctes kayi - described by Reed and Turnbull 1965 Cylindrodon fontis Hyaenodon horridus Hyaenodon crucians Hyaenodon microdon Agriochoerus sp. "Leptotragulus" profectus
known only from MV 8105: Centetodon kuenzii Mesohippus bairdi
known only from MV 8111: "Leptomeryx" sp. "M"
all other specimens are present at MV 7913 except where noted
Mammalia
 Rodentia - Ischyromyidae
Ischyromys sp. Leidy 1856 rodent
Ischyromys veterior Matthew 1903 rodent
 Rodentia - Eomyidae
"Paradjidaumo trilophus" = Adjidaumo trilophus
"Paradjidaumo trilophus" = Adjidaumo trilophus Cope 1873 rodent
 Lagomorpha - Leporidae
Palaeolagus haydeni Leidy 1856 rabbit
this and the preceding may represent P. hemirhizis if that species is valid
Palaeolagus temnodon Douglass 1902 rabbit
Megalagus brachyodon Matthew 1903 rabbit
 Theriamorpha - Apternodontidae
Apternodus mediaevus Matthew 1903 placental
 Perissodactyla - Brontotheriidae
Brontotheriidae indet. Marsh 1873 brontothere
 Perissodactyla - Rhinocerotidae
Trigonias osborni Lucas 1900 rhinoceros
 Perissodactyla - Hyracodontidae
Hyracodon sp. Leidy 1856 odd-toed ungulate
 Perissodactyla - Equidae
Miohippus obliquidens Osborn 1904 anchitheriine horse
 Artiodactyla - Leptomerycidae
"Leptomeryx" sp. Leidy 1853 ruminant
"I"
 Artiodactyla - Merycoidodontidae
"Merycoidodon cf. culbertsoni" = Merycoidodon culbertsonii
"Merycoidodon cf. culbertsoni" = Merycoidodon culbertsonii Leidy 1848 oreodont
 Carnivora - Canidae
? Hesperocyon sp. Scott 1890 canid
 Theriamorpha - Herpetotheriidae
Herpetotherium valens Lambe 1908 marsupial