Gadsden County, Florida paleontological sites

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

Age

Era: Neogene<br/> Period: Early Miocene<br/> Faunal stage: Hemingfordian ~20.6—16.3 Mya, calculates to a period of approximately <br/> Geologic formation: Torreya Formation

Sites

Gadsden County paleontological sites are represented by the following:<br/> La Camelia Site. Time period: 17.7 Mya. (AEO)<br/> Midway Site. Time period: ~18.9—18.8 Mya. <br/> Milwhite Gunn Farm Site. Time period: ~17.0 Mya. (AEO)<br/> Quincy Site. Time period: ~17.0 Mya. (AEO)<br/> Coordinates:

Genus and species identified

La Camelia site = LCS. Midway site. = MIS. Milwhite Gunn Farfm Site. Marks River site = MGFD. Quincy site = QUI.

Reptiles and amphibians

• Batrachosauroides B. dissimulans (amphibian) MGFD
• Colubrinae (snake) MGFD
• Natricinae (snake) MGFD
• Scincidae (skink) MGFD
• Cnemidophorus (racerunner lizard).MGFD.
• Heloderma (Gila monster type poisonous lizard) LCS
• Leiocephalus (lizard) MGFD

Mammals

Carnivores

• Amphicyon pontoni (bear-dog) MIS
• Borophaginae (proto-dog) MIS
• Procyon (raccoon) MIS

Herbivores

• Acritohippus isonesus (horse) LCS
• Anchitherium clarencei MIS
• Aphelops (rhinoceros) LCS, MIS, MGFD
• Archaeohippus blackbergi
• Blastomeryx (musk deer) MIS
• Bouromeryx americanus (deer-like) LCS
• Harrymys magnus (kangaroo rat) MIS
• Lantanotherium (gymnure) MGFD
• Copemys (hamster-like rodents) MGFD
• Metaxytherium crataegense (sea cow) LCS, MGFD
• Merychippus gunteri (horse) LCS, MGFD, QUI
• Merychippus primus (horse) LCS, MGFD
• Mylagaulus (horned rodent) MIS, MGFD
• Nanosiren (sea cow) MIS
• Merycoidodontidae (oreodont) MIS
• Perognathus minutus (mouse) MGFD
• Proheteromys floridanus (kangaroo rat) MIS, MGFD
• Prosynthetoceras texanus (deer-like) MIS
• Prosthennops xiphodonticus (deer-like). LCS
• Rakomeryx (deer-like) LCS

References

• Bryant, J. D., Journal of Vertebrate Paleontology 11(4). 1991
• Simpson, G. G., 1932. Bulletin of the Florida State Geological Survey 10.
• New Early Barstovian (Middle Miocene) Vertebrates from the Upper Torreya Formation, Eastern Florida Panhandle, J. Daniel Bryant, Journal of Vertebrate Paleontology, Vol. 11, No. 4 (Dec. 31, 1991), pp.&nbsp;472–489.
• Paleobiology Database : Gunn Farm Collection, John Alroy.
• Paleobiology Datatabase: Midway Collection, Alroy.
• Olson, Stanley J., Florida Geological Survey, Fossil Mammals of Florida, 1959 http://www.dep.state.fl.us/geology/geologictopics/floridas_fossil_mammals.pdf.