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

Also known as Collection VI; Swamp Assemblage; Swampy Plains 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; lithology not reported

Size class: macrofossils

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

Purpose of describing collection: paleoecologic analysis

PaleoDB collection 17173: authorized by John Alroy, entered by John Alroy on 18.10.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• NISP 1417
top 3 ft of the LNZ: Clark and Kietzke 1967
about 200 yards east of the western locality
following taxa are not found in list of Clark et al. and may belong to other collections: Eutypomys thomsoni Adjidaumo minutus Paradjidaumo trilophus "Caenopus sp." Subhyracodon sp. Metamynodon planifrons Stibarus obtusilobus Archaeotherium mortoni Heptacodon occidentale - "occidentalis" Hypisodus minimus "Paratylopus sp." Agriochoerus antiquus
Show authors, comments, and common names
Reptilia
 Squamata -
Peltosaurus sp.
Peltosaurus sp. Cope 1873 squamates
 Testudines - Testudinidae
Stylemys sp.
Stylemys sp. Leidy 1851 turtle
Mammalia
 Perissodactyla - Hyracodontidae
Hyracodon nebraskensis
Hyracodon nebraskensis Leidy 1850 odd-toed ungulate
 Perissodactyla - Equidae
Mesohippus bairdi
Mesohippus bairdi Leidy 1850 anchitheriine horse
"bairdii"
 Artiodactyla - Hypertragulidae
Hypertragulus calcaratus
Hypertragulus calcaratus Cope 1873 ruminant
 Artiodactyla - Leptomerycidae
Leptomeryx evansi
Leptomeryx evansi Leidy 1853 ruminant
 Artiodactyla - Leptochoeridae
Leptochoeridae indet.
Leptochoeridae indet. Marsh 1894 even-toed ungulate
 Artiodactyla - Merycoidodontidae
Miniochoerus gracilis, "Merycoidodon culbertsoni" = Merycoidodon culbertsonii
Miniochoerus gracilis Leidy 1851 oreodont
"Merycoidodon culbertsoni" = Merycoidodon culbertsonii Leidy 1848 oreodont
 Artiodactyla - Camelidae
Poebrotherium wilsoni
Poebrotherium wilsoni Leidy 1847 camel
 Creodonta - Hyaenodontidae
Hyaenodon sp.
Hyaenodon sp. Laizer and Parieu 1838 creodont
 Carnivora - Nimravidae
Dinictis sp., Hoplophoneus sp.
Dinictis sp. Leidy 1854 false sabre-tooth
Hoplophoneus sp. Cope 1874 false sabre-tooth
 Carnivora - Canidae
Hesperocyon sp.
Hesperocyon sp. Scott 1890 canid
 Carnivora - Amphicyonidae
Daphoenus sp.
Daphoenus sp. Leidy 1853 bear-dog
 Rodentia - Cricetidae
Eumys elegans
Eumys elegans Leidy 1856 mouse
 Rodentia - Ischyromyidae
Ischyromys typus
Ischyromys typus Leidy 1856 rodent
 Rodentia - Aplodontidae
"Prosciurus relictus" = Altasciurus relictus
"Prosciurus relictus" = Altasciurus relictus Cope 1873 mountain beaver
 Lagomorpha - Leporidae
Palaeolagus haydeni, Megalagus turgidus
Palaeolagus haydeni Leidy 1856 rabbit
Megalagus turgidus Cope 1873 rabbit