Sage Creek Basin (West) (Oligocene of the United States)

Also known as Collections I, II, and V; Floodplain Assemblage; Open Plain Facies

Where: Pennington County, South Dakota (43.9° N, 102.4° W: paleocoordinates 45.0° N, 94.2° W)

• coordinate based on political unit

When: Scenic Member (Brule Formation), Orellan (33.9 - 33.3 Ma)

• Lower Nodular Zone

Environment/lithology: terrestrial

Primary reference: J. Damuth. 1982. Analysis of the Preservation of Community Structure in Assemblages of Fossil Mammals. Paleobiology 8(4):434-446 [J. Alroy/J. Alroy/J. Ju]more details

PaleoDB collection 17174: authorized by John Alroy, entered by John Alroy on 18.10.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• although Damuth's collection of 7425 specimens is from three different areas several miles apart, data of Clark and Kietzke 1967 make it possible to separate out this list for a single locality in the north-central Sage Creek Basin; this includes 1127 specimens
mostly from "3 to 10 ft. below the top" of the LNZ: Clark and Kietzke 1967
about 200 yards west of the eastern locality
following taxa can't be assigned to a locality based on graphs of Clark and Kietzke 1967: Adjidaumo minutus Paradjidaumo trilophus Metamynodon planifrons Leptochoerus sp. - possibly "Bathygenys sp." of Clark and Kietzke 1967 "Protoceras" sp. ? Eotylopus sp.
Show authors, comments, and common names
Mammalia
 Didelphimorphia - Didelphidae
Didelphidae indet.1
 Theriamorpha - Leptictidae
Leptictidae indet.1
Leptictidae indet.1 Gill 1872 eutherian
 Perissodactyla - Equidae
Mesohippus bairdi
Mesohippus bairdi Leidy 1850 anchitheriine horse
"bairdii"
 Perissodactyla - Hyracodontidae
Hyracodon nebraskensis
Hyracodon nebraskensis Leidy 1850 odd-toed ungulate
 Perissodactyla - Rhinocerotidae
Subhyracodon sp.
Subhyracodon sp. Wood 1927 rhinoceros
includes "Caenopus sp." although Damuth indicates there are two species
 Perissodactyla - Tapiridae
"Colodon dakotensis" = Colodon occidentalis
"Colodon dakotensis" = Colodon occidentalis Leidy 1868 tapir
 Artiodactyla - Entelodontidae
Archaeotherium mortoni
Archaeotherium mortoni Leidy 1850 even-toed ungulate
 Artiodactyla - Hypisodontidae
Hypisodus minimus
Hypisodus minimus Cope 1873 ruminant
 Artiodactyla - Hypertragulidae
Hypertragulus calcaratus
Hypertragulus calcaratus Cope 1873 ruminant
 Artiodactyla - Leptomerycidae
Leptomeryx evansi
Leptomeryx evansi Leidy 1853 ruminant
 Artiodactyla - Agriochoeridae
Agriochoerus antiquus
Agriochoerus antiquus Leidy 1850 agriochoerid
 Artiodactyla - Camelidae
Poebrotherium wilsoni
Poebrotherium wilsoni Leidy 1847 camel
 Artiodactyla - Merycoidodontidae
Miniochoerus gracilis, "Merycoidodon culbertsoni" = Merycoidodon culbertsonii
Miniochoerus gracilis Leidy 1851 oreodont
"Merycoidodon culbertsoni" = Merycoidodon culbertsonii Leidy 1848 oreodont
 Artiodactyla - Leptochoeridae
Stibarus obtusilobus
Stibarus obtusilobus Cope 1873 even-toed ungulate
 Artiodactyla - Tayassuidae
Perchoerus nanus
Perchoerus nanus Marsh 1894 peccary
 Carnivora - Nimravidae
Dinictis sp.1
Dinictis sp.1 Leidy 1854 false sabre-tooth
 Carnivora - Palaeogalidae
Palaeogale sp.1
Palaeogale sp.1 von Meyer 1846 carnivoran
listed also as "Bunaelurus"
 Carnivora - Mustelidae
Mustelavus sp.1
Mustelavus sp.1 Clark 1936 mustelid carnivore
 Carnivora - Amphicyonidae
Daphoenus sp.1
Daphoenus sp.1 Leidy 1853 bear-dog
 Carnivora - Canidae
Hesperocyon sp.1
Hesperocyon sp.1 Scott 1890 canid
 Theriamorpha - Geolabididae
Centetodon wolffi2
Centetodon wolffi2 Macdonald 1965 placental
from Open Plain Facies in Pennington Co.
 Lagomorpha - Leporidae
Megalagus turgidus, Palaeolagus haydeni
Megalagus turgidus Cope 1873 rabbit
Palaeolagus haydeni Leidy 1856 rabbit
 Rodentia - Aplodontidae
"Prosciurus relictus" = Altasciurus relictus
"Prosciurus relictus" = Altasciurus relictus Cope 1873 mountain beaver
 Rodentia - Ischyromyidae
Ischyromys typus
Ischyromys typus Leidy 1856 rodent
 Rodentia - Eutypomyidae
Eutypomys thomsoni
Eutypomys thomsoni Matthew 1905 rodent
 Rodentia - Cricetidae
Eumys elegans
Eumys elegans Leidy 1856 mouse
Reptilia
 Squamata -
Peltosaurus sp.1
Peltosaurus sp.1 Cope 1873 squamates
 Testudines - Testudinidae
Stylemys sp.1
Stylemys sp.1 Leidy 1851 turtle
1Clark and Kietzke 1967; 2Lillegraven et al. 1981