Ashley River (Miocene Marl) (Miocene of the United States)

Where: Dorchester County, South Carolina (33.1° N, 80.4° W: paleocoordinates 33.4° N, 77.5° W)

• coordinate based on political unit

When: Miocene (23.0 - 5.3 Ma)

Environment/lithology: marine; marl

Size class: macrofossils

Primary reference: J. Leidy. 1855. Indications of five species, with two new genera, of extinct Fishes. Proceedings of the Academy of Natural Sciences of Philadelphia 7:414 [M. Clapham/P. Vazquez]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 18506: authorized by John Alroy, entered by John Alroy on 15.05.2002, edited by Mark Uhen, Matthew Carrano and Evangelos Vlachos

Creative Commons license: CC BY (attribution)

Taxonomic list

• although only this specimen is specifically assigned to the Miocene marl, other parts of the fauna including Gomphotherium and Teleoceras may belong to it
Chondrichthyes
 Odontaspidida - Isuridae
Oxyrhina retroflexa10 Agassiz 1843 mackerel shark
Oxyrhina praecursor10 Leriche 1942 mackerel shark
 Myliobatiformes - Rhinopteridae
Rhinoptera dubia10 cownose ray
 Myliobatiformes - Myliobatidae
Myliobatis gigas10 Cope 1868 eagle ray
Myliobatis magister10 Leidy 1876 eagle ray
 Pristiformes - Pristidae
Pristis ensidens10 Leidy 1855 sawfish
 Hexanchiformes - Hexanchidae
Notidanus primigenius10 Agassiz 1843 cow shark
 Lamniformes - Otodontidae
"Carcharodon megalodon" = Otodus megalodon10, "Carcharodon angustidens" = Otodus (Carcharocles) angustidens10
"Carcharodon megalodon" = Otodus megalodon10 Agassiz 1843 megalodon
"Carcharodon angustidens" = Otodus (Carcharocles) angustidens10 Agassiz 1843 mackerel shark
 Lamniformes - Lamnidae
Alopecias grandis10, "Oxyrhina hastalis" = Carcharodon hastalis10
Alopecias grandis10 Leriche 1942 mackerel shark
"Oxyrhina hastalis" = Carcharodon hastalis10 Agassiz 1843 white shark
 Orectolobiformes - Ginglymostomatidae
"Ginglymostoma serra" = Nebrius serra10
"Ginglymostoma serra" = Nebrius serra10 Leidy 1877 nurse shark
 Orectolobiformes - Orectolobidae
Gryphodobatis uncus10 Leidy 1877 wobbegong
 Carchariniformes - Carcharhinidae
Galeocerdo aduncus10 Agassiz 1843 tiger shark
 Carchariniformes - Sphyrnidae
Sphyrna americana n. sp.10 Leriche 1942 hammerhead shark
 Carchariniformes - Hemigaleidae
Hemipristis serra10 Agassiz 1843 ground shark
 Plagiostomi - Carcharidae
Prionodon egertoni10 Agassiz 1843 elasmobranch
Osteichthyes
  -
Cyclotomodon vagrans n. gen. n. sp.3, Conosaurops bowmani n. gen. n. sp.6
Cyclotomodon vagrans n. gen. n. sp.3 Cope 1876 bony fish
Conosaurops bowmani n. gen. n. sp.6 Gibbes 1851 bony fish
Actinopteri
 Labriformes - Labridae
Labrodon carolinensis10 Leidy 1856
 Tetraodontiformes - Diodontidae
Reptilia
 Testudines - Trionychidae
Trionyx sp.9 Geoffroy Saint-Hilaire 1809 softshell turtle
I have repeatedly seen small fragments of the bony shell of species of Trionyx, from the Ashley deposits, but too small to determine from them any important specific character
 Testudines -
Eupachemys obtusus n. gen. n. sp.9
Eupachemys obtusus n. gen. n. sp.9 Leidy 1877 turtle
Prof. Holmes has submitted to my examination a specimen, probably pertaining to the same species as the latter, from the Ashley River, in the vicinity of Charles- ton. It consists of a marginal bone, represented in figures 4, 5, PI. xxxiv., half the natural size
Aves
 Ornithurae - Pelagornithidae
"? Palaeochenoides mioceanus" = Pelagornis4
"? Palaeochenoides mioceanus" = Pelagornis4 bird
Mammalia
 Carnivora -
"Phoca modesta n. sp." = Squalodon modesta7
"Phoca modesta n. sp." = Squalodon modesta7 Leidy 1869 pinniped
 Artiodactyla - Delphinidae
Entelodontidae indet.2 Lydekker 1883 dolphin
 Polyprotodonta -
Squalodon pelagius n. sp.7 Leidy 1869 mammal
 Polyprotodonta - Eurhinodelphinidae
Ceterhinops longifrons n. gen. n. sp.9
Ceterhinops longifrons n. gen. n. sp.9 Leidy 1877 mammal
Sanders (2002) asserts that this specimen is from the Pliocene Goose Creek Limestone, but this seems unlikely.
 Polyprotodonta - Ziphiidae
"Proroziphius macrops n. sp." = Choneziphius macrops8
"Proroziphius macrops n. sp." = Choneziphius macrops8 Leidy 1876 beaked whale
 Polyprotodonta -
Dinoziphius carolinensis n. sp.9 Leidy 1877 mammal
Phoca debilis n. sp.5 Leidy 1857 mammal
Squalodon crassus n. sp.1 Allen 1926 mammal