Prosynthetoceras Quarry (Miocene of the United States)

Also known as Synthetoceras Quarry

Where: Sioux County, Nebraska (42.4° N, 103.8° W: paleocoordinates 43.1° N, 99.9° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Olcott Formation, Hemingfordian (20.4 - 16.0 Ma)

Environment/lithology: terrestrial

Primary reference: M. F. Skinner, S. M. Skinner, and R. J. Gooris. 1977. Stratigraphy and biostratigraphy of late Cenozoic deposits in central Sioux County, western Nebraska. Bulletin of the American Museum of Natural History 158(5):263-370 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: biostratigraphic analysis

PaleoDB collection 17985: authorized by John Alroy, entered by John Alroy on 18.02.1993, edited by Jonathan Marcot

Creative Commons license: CC BY (attribution)

Taxonomic list

 Perissodactyla - Chalicotheriidae
Moropus merriami2 Holland and Peterson 1913 chalicothere
 Perissodactyla - Rhinocerotidae
Teleoceras medicornutum4 Osborn 1904 rhinoceros
Aphelops megalodus4 Cope 1873 rhinoceros
 Perissodactyla - Equidae
Desmatippus integer Matthew 1924 anchitheriine horse
 Carnivora - Amphicyonidae
Amphicyon sp.3 Lartet 1836 bear-dog
 Carnivora - Canidae
Cynarctoides acridens6 Barbour and Cook 1914 bone-crushing dog
 Ungulata - Tayassuidae
Prosthennops xiphodonticus1 Barbour 1925 peccary
Hesperhys vagrans5 Douglass 1903 peccary
F:AM 143843
 Ungulata - Protoceratidae
Lambdoceras siouxensis1 Frick 1937 protoceratid