Manatee County Dam (Neogene of the United States)

Where: Manatee County, Florida (27.5° N, 82.5° W: paleocoordinates 27.7° N, 80.8° W)

• coordinate based on political unit

• small collection-level geographic resolution

When: Bone Valley Member (Peace River Formation), Hemphillian (10.3 - 4.9 Ma)

• JA: Hemphillian based on AEO results; upper beds

•Missimer 1999: The Peace River Formation was deposited from about 11 to 4.3 Ma. It is separated from the underlying, middle Miocene Arcadia Formation by an unconformity with a hiatus of 2 to 4 m.y. The unconformity separating the shallow marine sequence (late Miocene) from the overlying deltaic sequence (early Pliocene) has a hiatal gap of 2 to 6 m.y. depending on geographic location.

• group of beds-level stratigraphic resolution

Environment/lithology: estuary or bay; phosphatic, sandy gravel

• well-sorted, sandy, phosphatic gravels (0.6 to 1.2 m thick)

Size classes: macrofossils, mesofossils

Primary reference: 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]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18556: authorized by John Alroy, entered by John Alroy on 27.09.1993, edited by Philip Mannion and Richard Hulbert

Creative Commons license: CC BY (attribution)

Taxonomic list

• from a 4' zone at one locality
NISP 26
Actinopteri
 Tetraodontiformes - Diodontidae
Diodon sp.7 Linnaeus 1758
 Acanthomorphata - Sciaenidae
Sciaenidae indet.7 Cuvier 1828
Aves
 Suliformes - Phalacrocoracidae
Reptilia
 Crocodylia - Crocodylidae
 Crocodylia - Alligatoridae
Alligator sp.7 Daudin 1809 alligator
 Testudines - Emydidae
"Chrysemys inflata" = Trachemys inflata7
"Chrysemys inflata" = Trachemys inflata7 Weaver and Robertson 1967 slider
 Testudines - Testudinidae
"Geochelone cf. turgida" = Hesperotestudo turgida7
"Geochelone cf. turgida" = Hesperotestudo turgida7 Cope 1892 turtle
 Testudines - Cheloniidae
Cheloniidae indet.7 Bonaparte 1832 sea turtle
 Testudines - Trionychidae
Trionychidae indet.7 Gray 1825 softshell turtle
Mammalia
 Proboscidea - Gomphotheriidae
Gomphotheriidae indet.4 Hay 1922 gomphothere
 Perissodactyla - Rhinocerotidae
Teleoceras sp. Hatcher 1894 rhinoceros
 Perissodactyla - Tapiridae
Tapirus sp.2 Brisson 1762 tapir
 Perissodactyla - Equidae
Neohipparion eurystyle3 Cope 1893 hipparionine horse
Nannippus aztecus1 Mooser 1968 hipparionine horse
"Hipparion ingenuum" = Cormohipparion ingenuum7 Leidy 1885 hipparionine horse
"Hippotherium cf. ingenuum" = Cormohipparion ingenuum3 Leidy 1885 hipparionine horse
Pseudhipparion cf. skinneri6 Webb and Hulbert 1986 hipparionine horse
Calippus elachistus3 Hulbert 1988 horse
 Artiodactyla - Camelidae
cf. Hemiauchenia sp.1 Gervais and Ameghino 1880 camel
 Carnivora - Canidae
Canidae indet. Fischer de Waldheim 1817 canid
Chondrichthyes
 Myliobatiformes - Aetobatidae
Aetobatus sp.7 Blainville 1816 stingray
 Myliobatiformes - Myliobatidae
"Myliobatus sp." = Myliobatis7
"Myliobatus sp." = Myliobatis7 Cuvier 1816 eagle ray
 Rhinopristiformes - Pristidae
Pristis sp.7 Linck 1790 sawfish
 Carcharhiniformes - Galeocerdidae
Galeocerdo aduncus7 Agassiz 1835 tiger shark
 Carcharhiniformes - Hemigaleidae
Hemipristis serra7 Agassiz 1835 ground shark
 Carcharhiniformes - Carcharhinidae
Carcharhinus leucas7 Valenciennes 1839 requiem shark
Negaprion brevirostris7 Poey 1868 lemon shark
 Lamniformes - Lamnidae
"Isurus hastalis" = Carcharodon hastalis7
"Isurus hastalis" = Carcharodon hastalis7 Agassiz 1838 white shark
 Lamniformes - Odontaspididae
"Odontaspis cuspidata" = Araloselachus cuspidatus7
"Odontaspis cuspidata" = Araloselachus cuspidatus7 Agassiz 1843 sand tiger shark
 Lamniformes - Otodontidae
"Carcharodon megalodon" = Otodus megalodon7, "Odontaspis macrota" = Otodus macrotus7
"Carcharodon megalodon" = Otodus megalodon7 Agassiz 1835 megalodon
"Odontaspis macrota" = Otodus macrotus7 Agassiz 1838 mackerel shark