Four Corners Mine, Miocene (Neogene of the United States)

Where: Polk County, Florida (27.9° N, 81.8° W: paleocoordinates 28.1° N, 80.1° W)

• coordinate based on political unit

When: Late/Upper Hemphillian (10.3 - 4.9 Ma)

• group of beds-level stratigraphic resolution

Environment/lithology: terrestrial; lithology not reported

Size class: macrofossils

Primary reference: X. Wang, R. H. Tedford, and B. E. Taylor. 1999. Phylogenetic systematics of the Borophaginae (Carnivora: Canidae). Bulletin of the American Museum of Natural History 243:1-392 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18533: authorized by John Alroy, entered by John Alroy on 27.09.1993

Creative Commons license: CC BY (attribution)

Taxonomic list

• owned by IMC-Agrico Co.
Mammalia
 Perissodactyla - Equidae
Nannippus westoni3, Hipparion cf. tehonense2, "Hippotherium ingenuum" = Cormohipparion ingenuum1, "Hippotherium plicatile" = Cormohipparion plicatile1, "Hippotherium emsliei" = Cormohipparion emsliei1
Nannippus westoni3 Simpson 1930 hipparionine horse
Hipparion cf. tehonense2 Merriam 1916 hipparionine horse
"Hippotherium ingenuum" = Cormohipparion ingenuum1 Leidy 1885 hipparionine horse
"Hippotherium plicatile" = Cormohipparion plicatile1 Leidy 1887 hipparionine horse
"Hippotherium emsliei" = Cormohipparion emsliei1 Hulbert 1988 hipparionine horse
 Carnivora - Canidae
Borophagus hilli Johnston 1939 bone-crushing dog