Little Muddy VII (UM BB-37) (Eocene of the United States)

Where: Lincoln County, Wyoming (41.8° N, 110.7° W: paleocoordinates 45.9° N, 96.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Bridger Formation, Bridgerian (50.3 - 46.2 Ma)

Environment/lithology: terrestrial

Primary reference: W. C. Clyde, J.-P. Zonneveld, J. Stamatakos, G. F. Gunnell, and W. S. Bartels. 1997. Magnetostratigraphy across the Wasatchian-Bridgerian boundary (early to middle Eocene) in the western Green River Basin, Wyoming. Journal of Geology 105:657-669 [J. Alroy/J. Alroy/J. Alroy]more details

PaleoDB collection 16273: authorized by John Alroy, entered by John Alroy on 15.05.2002

Creative Commons license: CC BY (attribution)

Taxonomic list

• NISP based on Gunnell 1998c
see map of Zonneveld et al. 2000, who repeat the list
Mammalia
 Theriamorpha - Herpetotheriidae
Herpetotherium marsupium1 Troxell 1923 marsupial
 Theriamorpha - Peradectidae
Peradectes chesteri Gazin 1952 marsupial
 Cimolesta - Apatemyidae
Apatemys bellulus Marsh 1872 eutherian
 Perissodactyla - Hyrachyidae
Hyrachyus sp. Leidy 1871 odd-toed ungulate
 Theriamorpha - Viverravidae
Viverravus minutus2 Wortman 1901 placental
 Theriamorpha - Metacheiromyidae
Metacheiromys sp. Wortman 1903 placental
 Theriamorpha - Nyctitheriidae
"Scenopagus curtidens" = Nyctitherium curtidens
"Scenopagus curtidens" = Nyctitherium curtidens Matthew 1909 placental
 Rodentia - Sciuravidae
Sciuravus nitidus Marsh 1871 rodent
 Primates - Omomyidae
Washakius insignis Leidy 1873 tarsier
see also Gunnell 1995a
 Primates - Notharctidae
Smilodectes mcgrewi Gingerich 1979 primate
Notharctus robinsoni Gingerich 1979 primate
Reptilia
 Squamata - Boidae
Calamagras primus3 Hecht 1959 dwarf boa
UM 101211, two vertebrae
 Squamata - Anguidae
Xestops cf. vagans3 Marsh 1872 squamates
 Testudines - Carettochelyidae
Anosteira ornata3 Leidy 1871 turtle
 Testudines - Geoemydidae
"Echmatemys septaria" = Echmatemys stevensoniana3
"Echmatemys septaria" = Echmatemys stevensoniana3 Leidy 1870 turtle
 Loricata -
cf. Borealosuchus sp.3 Brochu 1997 crocodilian
 Crocodylia - Planocraniidae
"Pristichampsus vorax" = Boverisuchus vorax3
"Pristichampsus vorax" = Boverisuchus vorax3 Troxell 1925 crocodilian
 Crocodylia - Crocodylidae
cf. Crocodylus affinis3 Marsh 1871 crocodile