Fort Green Mine (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: Bone Valley Member (Peace River Formation), Late/Upper Hemphillian (10.3 - 4.9 Ma)

• late Hemphillian (JA: changed to Zanclean for no good reason by Pyenson or Uhen, changed back by me); upper beds

• group of beds-level stratigraphic resolution

Environment/lithology: marginal marine; pebbly, phosphatic, argillaceous, sandy sandstone

Size class: macrofossils

Collection methods: surface (float)

Primary reference: A. Berta and H. Galiano. 1983. Megantereon hesperus from the late Hemphillian of Florida with remarks on the phylogenetic relationships of machairodonts (Mammalia, Felidae, Machairodontinae). Journal of Paleontology 57(5):892-899 [J. Alroy/J. Alroy/J. Alroy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18532: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Nick Pyenson, Mark Uhen and Richard Hulbert

Creative Commons license: CC BY (attribution)

Taxonomic list

• a.k.a. Agrico Mine: C. martini known from Grey Zone at this locality; Hippotherium ("Cormohipparion") plicatile reported by Hulbert 1988c and Nannippus westoni by Hulbert 1993 are probably not late Hemphillian
 Testudines - Cheloniidae
Lepidochelys sp.3 Fitzinger 1843 Ridley sea turtle
Eretmochelys sp.3 Fitzinger 1843 sea turtle
Caretta sp.3 Rafinesque 1814 loggerhead
 Testudines -
"Chelonia sp." = Testudines3
"Chelonia sp." = Testudines3 Batsch 1788 turtle
 Sirenia - Dugongidae
Corystosiren varguezi4 Domning 1990 dugong
 Perissodactyla - Tapiridae
Tapirus polkensis5 Olsen 1960 tapir
 Perissodactyla - Equidae
"Hippotherium emsliei" = Cormohipparion emsliei1 Hulbert 1988 hipparionine horse
Pseudhipparion simpsoni13 Webb and Hulbert 1986 hipparionine horse
Neohipparion eurystyle6 Cope 1893 hipparionine horse
Dinohippus mexicanus4 Lance 1950 horse
draglines 8 & 13
 Carnivora - Ursidae
Plionarctos sp.7 Frick 1926 bear
Upper Bone Valley
 Carnivora - Odobenidae
"Trichecodon huxleyi" = Ontocetus emmonsi8
"Trichecodon huxleyi" = Ontocetus emmonsi8 Leidy 1859 walrus
 Carnivora - Phocidae
Callophoca obscura8 Van Beneden 1876 seal
 Carnivora - Mustelidae
Enhydritherium terraenovae2 Berta and Morgan 1985 badger
Enhydritherium terraenovae8 Berta and Morgan 1985 badger
 Carnivora - Canidae
Eucyon davisi12 Merriam 1911 canine
Epicyon haydeni10 Leidy 1858 bone-crushing dog
Borophagus hilli10 Johnston 1939 bone-crushing dog
Borophagus pugnator10 Cook 1922 bone-crushing dog
 Carnivora - Felidae
Megantereon hesperus Gazin 1933 cat
 Proboscidea - Gomphotheriidae
Gomphotherium simplicidens12 Osborn 1923 gomphothere
 Odontoceti - Kogiidae
Kogiidae indet.9 Miller 1923 pygmy sperm whale
 Odontoceti - Iniidae
Goniodelphis hudsoni8 Allen 1941 toothed whale
 Odontoceti -
Delphinodon cf. mento8 Cope 1867 toothed whale
 Odontoceti - Ziphiidae
Ninoziphius platyrostris8 Muizon 1983 beaked whale
 Ungulata - Gelocidae
Floridameryx floridanus12 Webb 2008 ruminant
 Ungulata - Antilocapridae
Hexameryx simpsoni11 White 1941 pronghorn