Gadsden County, Florida paleontological sites

Gadsden County, Florida displaying Miocene shoreline according to the Florida Geologic Survey.

Florida during the Miocene

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

Age[]

Era: Neogene
Period: Early Miocene
Faunal stage: Hemingfordian ~20.6—16.3 Mya, calculates to a period of approximately 4.3 million years
Geologic formation: Torreya Formation

Sites[]

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

30°30′N 84°30′W / 30.5°N 84.5°W

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
americanus (deer-like) LCS
magnus (kangaroo rat) MIS
(gymnure) MGFD
(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
floridanus (kangaroo rat) MIS, MGFD
Prosynthetoceras texanus (deer-like) MIS
xiphodonticus (deer-like). LCS
(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. 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 [1].