Indian Creek (Middle Titanotherium Beds) (Eocene of the United States)

Where: Shannon County, South Dakota (43.3° N, 102.5° W: paleocoordinates 44.6° N, 93.7° W)

• coordinate based on political unit

When: Chadron Formation, Chadronian (37.2 - 33.9 Ma)

• member-level stratigraphic resolution

Environment/lithology: terrestrial

Primary reference: H. F. Osborn. 1908. New or little known titanotheres from the Eocene and Oligocene. Bulletin of the American Museum of Natural History 24(32):599-617 [J. Alroy/J. Alroy]more details

PaleoDB collection 16978: authorized by John Alroy, entered by John Alroy on 18.10.1995

Creative Commons license: CC BY (attribution)

Taxonomic list

• relationship of unit to members of Clark and Beerbower 1967 unclear
 Cariamae - Bathornithidae
Bathornis veredus3 Wetmore 1927 bird
Princeton specimen collected by G. L. Jepsen in 1929 from "Middle Titanothere (Chadron) deposits... on Indian Creek"
 Perissodactyla - Brontotheriidae
"Megacerops hatcheri" = Megacerops coloradensis1
"Megacerops hatcheri" = Megacerops coloradensis1 Leidy 1870 brontothere
 Ungulata - Protoceratidae
Heteromeryx dispar n. sp.2 Matthew 1905 protoceratid
from "Middle Titanotherium Beds on Indian Creek... S. Dakota"; see also Patton and Taylor 1973