Canyon Ferry Reservoir 24LC16 (Eocene of the United States)

Where: Lewis and Clark County, Montana (46.6° N, 112.1° W: paleocoordinates 48.4° N, 103.1° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Chadronian (37.2 - 33.9 Ma)

Environment/lithology: terrestrial

Primary reference: T. E. White. 1954. Preliminary Analysis of the Fossil Vertebrates of the Canyon Ferry Reservoir Area. Proceedings of the United States National Museum 103(3326):395-438 [J. Alroy/J. Alroy/J. Marcot]more details

PaleoDB collection 16924: authorized by John Alroy, entered by John Alroy on 30.04.1994, edited by Clint Boyd

Creative Commons license: CC BY (attribution)

Taxonomic list

• even split of specimens possibly from 24BW18 yields estimated NISP of 34
Mammalia
 Rodentia - Eomyidae
Adjidaumo lophatus n. sp.2, "Paradjidaumo cf. trilophus" = Adjidaumo trilophus1
Adjidaumo lophatus n. sp.2 Korth 2012 rodent
USNM 362472
"Paradjidaumo cf. trilophus" = Adjidaumo trilophus1 Cope 1873 rodent
 Rodentia - Ischyromyidae
"Titanotheriomys veterior" = Ischyromys veterior, Ischyromys cf. typus1
"Titanotheriomys veterior" = Ischyromys veterior Matthew 1903 rodent
Ischyromys cf. typus1 Leidy 1856 rodent
 Lagomorpha - Leporidae
Megalagus brachyodon Matthew 1903 rabbit
Palaeolagus temnodon Douglass 1902 rabbit
- 3
 Theriamorpha - Apternodontidae
Apternodus mediaevus Matthew 1903 placental
 Theriamorpha - Micropternodontidae
Cryptoryctes kayi4, "Kentrogomphios strophensis n. sp." = Micropternodus strophensis
Cryptoryctes kayi4 Reed 1954 placental
"Kentrogomphios strophensis n. sp." = Micropternodus strophensis White 1954 placental
 Carnivora - Amphicyonidae
Brachyrhynchocyon cf. dodgei1 Scott 1898 bear-dog
 Carnivora - Canidae
Hesperocyon gregarius1 Cope 1873 canid
 Artiodactyla - Leptochoeridae
Leptochoerus sp. Leidy 1856 even-toed ungulate
 Artiodactyla - Leptomerycidae
Pronodens transmontanus3 Douglass 1903 ruminant
 Perissodactyla - Equidae
Mesohippus bairdi1 Leidy 1850 anchitheriine horse
 Perissodactyla - Brontotheriidae
Brontotheriidae indet. Marsh 1873 brontothere
"a few fragments"