Leon County, Florida paleontological sites

The Leon County paleontological sites are assemblages of Early Miocene invertebrates and vertebrates of Leon County, Florida, United States.

Contents 1 Age 2 Sites 3 Specimens 3.1 Invertebrates 3.2 Fish 3.3 Reptiles 3.4 Birds 3.5 Mammals 4 References

Age

Era: Neogene.
Period: Early Miocene.
Faunal stage: Arikareean, ~23.1—21.9 Ma, calculates to a period of approximately 1.2 million years.
Geological Formation: Torreya Formation.

Sites

Leon County paleontological sites are represented by the following:

• Griscom Plantation Site. Located in Killearn Lakes Plantation, south-southeast of Lake Iamonia on the southeast most section of Luna Plantation during a well drilling operation. Time period: ~23.6—18.8 Ma. (AEO).^[1]

Coordinates:

• Seaboard Air Line Railroad Site. Location was south of the center of Tallahassee during a dredging operation for a roadway.^[2] Time period: ~21.7 Ma. (AEO, Alroy).

Coordinates:

• St. Marks River site. Located along the St. Marks River in southern Leon County. Time period: ~23.1—21.9 Ma. (AEO, Alroy).^[3]

Coordinates:

• Tallahassee Waterworks Sites. Locations were just south of the center of Tallahassee. Time period: ~23.03—15.99 Ma.

Coordinates:

• • USGS 2302
  • USGS 3423 aka J.C. Henderson's well
  • USGS 395

Griscom Plantation Site = GPS. Seaboard Air Line Railroad = SALR. St. Marks River site = SMRS. Tallahassee Waterworks Site = TWWS.

Specimens

Invertebrates

• Anomia suwaneensis (Bivalve) TWWS 3424
• Chlamys (Scallop). TWWS 2302.
• Ostrea normalis (Oyster). SALR.
• Lucina janus (Bivalve). TWWS 2302.
• Mercenaria langdoni. TWWS 395
• Metis chipolana (Bivalve). TWWS 2302.
• Turritella alcida (Seal snail). TWWS 2302.

Fish

• Carcharhinidae (Requiem shark). SALR.
• Myliobatidae (Eagle ray) SALR.
• Pristis (Sawfish) SALR.
• Sciaenidae (Croaker). SALR.

Reptiles

• Alligatoridae (Alligator). SALR.
• Boidae (Boa or constricting snake) SALR.
• Crocodylidae (Crocodile). SALR.
• Emydidae (Pond turtle). SALR.
• Testudinidae (Land tortoise). SALR.

Birds

• Gruidae (Crane) SALR.
• Ciconiidae (Stork). SALR.

Mammals

• Anchitherium A. clarencei (Horse) SALR.
• Aphelops, (Rhinoceros), SALR.
• Archaeohippus A. blackbergi (horse). SALR.
• Camelidae (family of camel). GPS.
• Floridatragulus (Camel). SALR.
• Menoceras (Rhinoceros). SALR.
• Moropus SMRS.
• Osbornodon iamonensis (Proto-dog). GPS.
• Oxydactylus, (Camel).
• Parahippus. (Horse). SALR.
• Parahippus leonensis, (Horse) GPS, SALR.
• Prosynthetoceras texanus (Deer-like ungulate) SALR.
• Nothokemas floridanus. (Camel). SALR.
• Proheteromys floridanus. (Rodent). SALR.
• Ruminantia (unknown ruminant). GPS.

References

• E. H. Sellards. 1916. Fossil vertebrates from Florida: A new Miocene fauna; new Pliocene species; the Pleistocene fauna. Florida State Geological Survey Annual Report 8:79-119.
• S. J. Olsen. 1964. The stratigraphic importance of a Lower Miocene vertebrate fauna from north Florida. Journal of Paleontology 38(3):477-482. Collected by S. J. Olsen, R. Cantwell, C. Cox.
• J. R. Gardner. 1947. The Molluscan Fauna of the Alum Bluff Group of Florida. United States Geological Survey Professional Paper (142A-H)1-709.