Manatee County Dam: Hemphillian, Florida

List of taxa
Where & when
Taphonomy & methods
Metadata & references
Taxonomic list
Chondrichthyes - Odontaspidida - Carcharodontidae
Isurus hastalis (Agassiz 1843)
Webb and Tessman 1967
recombined as Cosmopolitodus hastalis
Chondrichthyes - Myliobatiformes - Myliobatidae
Myliobatus sp. (Cuvier 1816)
Webb and Tessman 1967
original and current combination Myliobatis
Aetobatus sp. Blainville 1816
Webb and Tessman 1967
Chondrichthyes - Pristiformes - Pristidae
Pristis sp. Linck 1790
Webb and Tessman 1967
Chondrichthyes - Lamniformes - Otodontidae
Carcharodon megalodon (Agassiz 1843)
Webb and Tessman 1967
recombined as Otodus megalodon
Chondrichthyes - Lamniformes - Odontaspididae
Odontaspis macrota (Agassiz 1843)
Webb and Tessman 1967
Odontaspis cuspidata (Agassiz 1843)
Webb and Tessman 1967
recombined as Carcharias cuspidatus
Chondrichthyes - Carchariniformes - Carcharhinidae
Negaprion brevirostris Poey 1868
Webb and Tessman 1967
Galeocerdo contortis
Webb and Tessman 1967
Galeocerdo aduncus Agassiz 1843
Webb and Tessman 1967
Carcharhinus leucas (Valenciennes 1839)
Webb and Tessman 1967
Rhizoprionodon cf. terraenovae
Webb and Tessman 1967
Chondrichthyes - Carchariniformes - Hemigaleidae
Hemipristis serra Agassiz 1843
Webb and Tessman 1967
Actinopteri - Sciaenidae
Sciaenidae indet. (Cuvier 1828)
Webb and Tessman 1967
Actinopteri - Tetraodontiformes - Diodontidae
Diodon sp. Linnaeus 1758
Webb and Tessman 1967
Reptilia - Testudines - Cheloniidae
Cheloniidae indet. Bonaparte 1832
Webb and Tessman 1967
Reptilia - Testudines - Trionychidae
Trionychidae indet. Gray 1825
Webb and Tessman 1967
Reptilia - Testudines - Testudinidae
Geochelone cf. turgida (Cope 1892)
Webb and Tessman 1967
recombined as Hesperotestudo turgida
Reptilia - Testudines - Emydidae
Chrysemys inflata Weaver and Robertson 1967
Webb and Tessman 1967
nomen dubium belonging to Emydidae
Reptilia - Avetheropoda - Phalacrocoracidae
Phalacrocorax cf. wvetmorei
Webb and Tessman 1967
Reptilia - Crocodylidae
cf. Charactosuchus sp. Langston 1965
Webb and Tessman 1967
    = Crocodylidae indet. Cuvier 1807
Langston and Gasparini 1997
Reptilia - Alligatoridae
Alligator sp. Daudin 1809
Webb and Tessman 1967
Mammalia - Perissodactyla - Rhinocerotidae
Teleoceras sp. Hatcher 1894
2 specimens
Mammalia - Perissodactyla - Tapiridae
Tapiravus cf. polkensis Olsen 1960
Webb and Tessman 1967 1 specimen
    = Tapirus sp. Brisson 1762
Hulbert 2005
Mammalia - Perissodactyla - Equidae
Cormohipparion ingenuum (Leidy 1885)
12 specimens
    = Hippotherium cf. ingenuum Leidy 1885
Hulbert 1988
recombined as Cormohipparion ingenuum
"Hipparion ingenuum"
Hipparion ingenuum (Leidy 1885)
Webb and Tessman 1967
recombined as Cormohipparion ingenuum
Griphippus sp. Quinn 1955
1 specimen
    = Pseudhipparion cf. skinneri Webb and Hulbert 1986
Webb and Hulbert 1986
Nannippus minor (Sellards 1916)
3 specimens
    = Nannippus aztecus Mooser 1968
Alroy 2002
confirmed by Hulbert 1988c; (4 - 1 referred to C. elachistus)
Neohipparion cf. phosphorum (Simpson 1930)
3 specimens
    = Neohipparion eurystyle Cope 1893
Hulbert 1988
Calippus elachistus (Hulbert 1988)
Hulbert 1988 2 specimens
Mammalia - Carnivora - Canidae
Canidae indet. Fischer 1817
Mammalia - Proboscidea - Gomphotheriidae
Rhynchotherium cf. euhyphodon (Cope 1884)
1 specimen
    = Gomphotheriidae indet. Hay 1922
Lambert and Shoshani 1998
"R. sp." of Tobien 1973
Mammalia - Ungulata - Camelidae
Tanupolama sp. Stock 1928
1 specimen
    = cf. Hemiauchenia sp. Gervais and Ameghino 1880
Alroy 2002
see common names

Country:United States State/province:Florida County:Manatee
Coordinates: 27.5° North, 82.5° West (view map)
Paleocoordinates:27.7° North, 80.8° West
Basis of coordinate:based on political unit
Geographic resolution:small collection
10 m.y. bin:Cenozoic 6
*Period:Tertiary *Epoch:Miocene
Key time interval:Hemphillian
Age range of interval:10.30000 - 4.90000 m.y. ago
* legacy (obsolete) database fields
Geological group:Hawthorn Formation:Peace River Member:Bone Valley
Stratigraphic resolution:group of beds
Stratigraphy comments: JA: Hemphillian based on AEO results; upper beds
Lithology and environment
Primary lithology:phosphatic sandy gravel
Lithology description: well-sorted, sandy, phosphatic gravels (0.6 to 1.2 m thick)
Modes of preservation:body
Size of fossils:macrofossils,mesofossils
Collection methods and comments
Reason for describing collection:general faunal/floral analysis
Taxonomic list comments:from a 4' zone at one locality
Database number:18556
Authorizer:J. Alroy, J. Bloch, P. Mannion Enterer:J. Alroy, R. Hulbert, P. Mannion
Modifier:M. Carrano Research group:vertebrate
Created:1993-09-27 00:00:00 Last modified:2018-02-05 15:52:34
Access level:the public Released:1993-09-27 00:00:00
Creative Commons license:CC BY
Reference information

Primary reference:

3579. S. D. Webb and N. Tessman. 1968. A Pliocene vertebrate fauna from low elevation in Manatee County, Florida. American Journal of Science 266 [J. Alroy/J. Alroy/J. Ju]

Secondary references:

6294 J. Alroy. 2002. Synonymies and reidentifications of North American fossil mammals. [J. Alroy/J. Alroy/M. Uhen]
50346 R. C. Hulbert. 2005. Late Miocene Tapirus (Mammalia, Perissodactyla) from Florida, with description of a new species, Tapirus webbi. Bulletin of the Florida Museum of Natural History 45(4):465-494 [J. Bloch/R. Hulbert]
1951 R. C. Hulbert, Jr. 1988. Cormohipparion and Hipparion (Mammalia, Perissodactyla, Equidae) from the Late Neogene of Florida. Bulletin of the Florida State Museum, Biological Sciences 33(5):229-338 [J. Alroy/J. Alroy/M. Uhen]
1957 R. C. Hulbert, Jr. 1999. Nine million years of Tapirus (Mammalia: Perissodactyla) from Florida. Journal of Vertebrate Paleontology 19(3):53A [J. Alroy/J. Alroy/M. Uhen]
6232 W. D. Lambert and J. Shoshani. 1998. Proboscidea. In C. M. Janis, K. M. Scott, and L. L. Jacobs (eds.), Evolution of Tertiary mammals of North America 606-621 [J. Alroy/J. Alroy/J. Alroy]
49846 W. Langston and Z. Gasparini. 1997. Crocodilians, Gryposuchus and the South American gavials. In R. F. Kay, R. H. Madden, R. L. Cifelli, J. J. Flynn (eds.), Vertebrate Paleontology in the Neotropics - The Miocene fauna of La Venta, Colombia 113-154 [P. Mannion/P. Mannion/M. Carrano]
6227 S. D. Webb and R. C. Hulbert, Jr. 1986. Systematics and evolution of Pseudhipparion (Mammalia, Equidae) from the late Neogene of the Gulf Coastal Plain and the Great Plains. Contributions to Geology, the University of Wyoming, Special Paper 3:237-272 [J. Alroy/J. Alroy/J. Marcot]
46620 S. D. Webb and N. Tessman. 1967. Vertebrate Evidence of a Low Sea Level in the Middle Pliocene. Science 156:379 [P. Mannion/P. Mannion]