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

• outcrop-level geographic resolution

When: Miocene (23.0 - 5.3 Ma)

Environment/lithology: marine; marl

Size classes: macrofossils, mesofossils

Collected by Bowman

Collection methods: surface (float), surface (in situ),

Primary reference: R. W. Gibbes. 1851. Memoir on Mosasaurus and the three allied new genera, Holcodus, Conosaurus, and Amphorosteus. Smithsonian Contributions to Knowledge 2(5):1-13 [M. Carrano/M. Carrano]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 praecursor9 Leriche 1942 mackerel shark
 Odontaspidida - Carcharodontidae
"Oxyrhina hastalis" = Cosmopolitodus hastalis9
"Oxyrhina hastalis" = Cosmopolitodus hastalis9 Agassiz 1843 elasmobranch
 Rhinopristiformes - Pristidae
Pristis ensidens9 Leidy 1855 sawfish
 Myliobatiformes - Dasyatidae
Myliobatis gigas9 Cope 1868 eagle ray
Myliobatis magister9 Leidy 1876 eagle ray
"Rhinoptera dubia" = Rhinoptera dubius9 Leidy 1855 cownose ray
 Lamniformes - Otodontidae
"Carcharodon megalodon" = Otodus megalodon9, "Carcharodon angustidens" = Otodus (Carcharocles) angustidens9
"Carcharodon megalodon" = Otodus megalodon9 Agassiz 1843 megalodon
"Carcharodon angustidens" = Otodus (Carcharocles) angustidens9 Agassiz 1843 mackerel shark
 Lamniformes - Lamnidae
"Oxyrhina retroflexa" = Isurus retroflexus9, Alopecias grandis9
"Oxyrhina retroflexa" = Isurus retroflexus9 Agassiz 1843 mako shark
Alopecias grandis9 Leriche 1942 mackerel shark
 Carchariniformes - Carcharhinidae
Prionodon egertoni9 Agassiz 1843 blue shark
Galeocerdo aduncus9 Agassiz 1843 tiger shark
 Carchariniformes - Sphyrnidae
Sphyrna americana n. sp.9 Leriche 1942 hammerhead shark
 Carchariniformes - Hemigaleidae
"Hemipristis serra" = Hemipristis heteropleurus9
"Hemipristis serra" = Hemipristis heteropleurus9 Agassiz 1844 ground shark
 Orectolobiformes - Orectolobidae
Gryphodobatis uncus9, "Ginglymostoma serra" = Nebrius serra9
Gryphodobatis uncus9 Leidy 1877 wobbegong
"Ginglymostoma serra" = Nebrius serra9 Leidy 1877 nurse shark
 Hexanchiformes - Hexanchidae
"Notidanus primigenius" = Notorhynchus primigenius9
"Notidanus primigenius" = Notorhynchus primigenius9 Agassiz 1843 sevengill shark
Osteichthyes
  -
Cyclotomodon vagrans n. gen. n. sp.3
Cyclotomodon vagrans n. gen. n. sp.3 Cope 1876 bony fish
Actinopteri
 Labriformes - Labridae
 Tetraodontiformes - Diodontidae
Diodon vetus9 Leidy 1855
 Crossognathiformes - Pachyrhizodontidae
Conosaurus bowmani n. gen. n. sp.
Conosaurus bowmani n. gen. n. sp. Gibbes 1851
Reptilia
 Testudines - Trionychidae
Trionyx sp.8 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.8
Eupachemys obtusus n. gen. n. sp.8 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 modesta6
"Phoca modesta n. sp." = Squalodon modesta6 Leidy 1869 pinniped
 Ungulata - Entelodontidae
Entelodontidae indet.2 Lydekker 1883 even-toed ungulate
 Cetacea -
Squalodon pelagius n. sp.6 Leidy 1869 toothed whale
 Cetacea - Eurhinodelphinidae
Ceterhinops longifrons n. gen. n. sp.8
Ceterhinops longifrons n. gen. n. sp.8 Leidy 1877 toothed whale
Sanders (2002) asserts that this specimen is from the Pliocene Goose Creek Limestone, but this seems unlikely.
 Cetacea - Ziphiidae
"Proroziphius macrops n. sp." = Choneziphius macrops7
"Proroziphius macrops n. sp." = Choneziphius macrops7 Leidy 1876 beaked whale
 Cetacea -
Dinoziphius carolinensis n. sp.8 Leidy 1877 toothed whale
Phoca debilis n. sp.5 Leidy 1857 toothed whale
Squalodon crassus n. sp.1 Allen 1926 toothed whale