Bone Cove (Eocene of the United States)

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.8° N, 95.1° W)

• coordinate based on political unit

When: Big Cottonwood Creek Member (Chadron Formation), Chadronian (37.2 - 33.9 Ma)

• member assignment based on LaGarry pers. commun. 19 May 2005

Environment/lithology: terrestrial

Primary reference: G. E. Ostrander. 1985. Correlation of the early Oligocene (Chadronian) in northwestern Nebraska. Dakoterra 2(2):205-231 [J. Alroy/J. Alroy/P. Holroyd]more details

PaleoDB collection 16917: authorized by John Alroy, entered by John Alroy on 18.02.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• NE 1/4 sec 26 T33N R53W
Reptilia
 Squamata - Anguidae
Glyptosaurus sp. Marsh 1871 squamates
Mammalia
 Rodentia - Aplodontidae
Prosciurus vetustus Matthew 1903 mountain beaver
 Rodentia - Sciuridae
"Protosciurus jeffersoni" = Douglassciurus jeffersoni
"Protosciurus jeffersoni" = Douglassciurus jeffersoni Douglass 1902 squirrel
 Rodentia - Eomyidae
Eomyidae indet. Winge 1887 rodent
"Yoderimys burkei" = Zemiodontomys burkei Black 1965 rodent
Paradjidaumo trilophus Cope 1873 rodent
Centimanomys major Galbreath 1955 rodent
Adjidaumo minimus Matthew 1903 rodent
Adjidaumo minutus Cope 1873 rodent
 Rodentia - Eutypomyidae
Eutypomyidae indet. Miller and Gidley 1918 rodent
 Rodentia - Ischyromyidae
Ischyromys veterior Matthew 1903 rodent
 Rodentia - Cylindrodontidae
Pseudocylindrodon neglectus Burke 1935 rodent
Cylindrodon sp. Douglass 1902 rodent
 Lagomorpha - Leporidae
Palaeolagus temnodon Douglass 1902 rabbit
 Lipotyphla - Geolabididae
Centetodon chadronensis Lillegraven et al. 1981 placental
 Perissodactyla - Brontotheriidae
Brontotheriidae indet. Marsh 1873 brontothere
 Perissodactyla - Hyracodontidae
Hyracodon nebraskensis Leidy 1850 odd-toed ungulate
probably OK because Ostrander also recognizes H. priscidens
 Perissodactyla - Equidae
Equidae indet. Gray 1821 horse
 Tribosphenida - Heterosoricidae
Domnina gradata Cope 1873 placental
 Tribosphenida - Apternodontidae
Oligoryctes cameronensis Hough 1956 placental
 Tribosphenida - Micropternodontidae
Micropternodus borealis Matthew 1903 placental
Micropternodus montrosensis Ostrander 1983 placental
 Chiroptera -
Chiroptera indet. Blumenbach 1779 bat
a bat
 Carnivora - Amphicyonidae
? Daphoenus sp. Leidy 1853 bear-dog
 Carnivora - Canidae
Hesperocyon sp. Scott 1890 canid
 Ungulata - Merycoidodontidae
Merycoidodon sp. Leidy 1848 oreodont
 Ungulata - Entelodontidae
Archaeotherium sp. Leidy 1850 even-toed ungulate
 Ungulata - Hypisodontidae
Hypisodus minimus Cope 1873 ruminant
 Ungulata - Leptomerycidae
Leptomeryx sp. Leidy 1853 ruminant
 Theriiformes - Herpetotheriidae
Peratherium fugax Cope 1873 marsupial