Eutaw Formation, Georgia (Cretaceous to of the United States)

Where: Chattahoochee County County, Georgia (32.4° N, 84.9° W: paleocoordinates 32.3° N, 54.1° W)

When: Eutaw Formation, Early/Lower Santonian to Early/Lower Santonian (85.8 - 83.5 Ma)

Environment/lithology: marine; lithified sandstone and lithified mudstone

• Relatively clean sandstones; argillaceous, marly, sandstones; and sandy, marly mudstones.

•The vertebrate-tooth bearing beds at the primary collecting site are mostly argillaceous,

•marly sandstones deposited in marshy and lagoonal back-barrier environments of deposition.

Primary reference: G. R. Case, D. R. Schwimmer, P.D. Borodin and J.J. Leggett. 2001. A new selachian fauna from the Eutaw Formation (Upper Cretaceous/Early to Middle Santonian) of Chattahoochee County, Georgia. Palaeontographica Abteilung A 261(Lfg. 4-6):83-102 [J. Kriwet/W. Glaeser]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 61769: authorized by Juergen Kriwet, entered by Wolfgang Glaeser on 29.06.2006

Creative Commons license: CC BY (attribution)

Taxonomic list

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Chondrichthyes
 Squatiniformes - Squatinidae
Squatina hassei
Squatina hassei Leriche 1929 angel shark
 Hybodontiformes - Hybodontidae
Hybodus sp.
Hybodus sp. Agassiz 1837 elasmobranch
 Hybodontiformes - Lonchidiidae
"Lissodus babulskii" = Lonchidion babulskii
"Lissodus babulskii" = Lonchidion babulskii Cappetta and Case 1975 elasmobranch
 Hybodontiformes - Ptychodontidae
Ptychodus mortoni
Ptychodus mortoni Agassiz 1843 elasmobranch
 Rajiformes -
Erguitaia benningensis n. sp., Erguitaia rugosa n. sp., Protoplatyrhina renae
Erguitaia rugosa n. sp. ray
Protoplatyrhina renae Case 1978 guitarfish
 Sclerorhynchiformes - Sclerorhynchidae
Borodinopristis ackermani n. sp., Ischyrhiza georgiensis n. sp., Ischyrhiza mira
Borodinopristis ackermani n. sp. elasmobranch
Ischyrhiza georgiensis n. sp. elasmobranch
Ischyrhiza mira Leidy 1856 elasmobranch
 Sclerorhynchiformes - Ptychotrygonidae
Ptychotrygon chattahoocheensis n. sp., Ptychotrygon sp., Ptychotrygon eutawensis n. sp., Ptychotrygon cf. triangularis
Ptychotrygon chattahoocheensis n. sp. elasmobranch
Ptychotrygon sp. Jaekel 1894 elasmobranch
Ptychotrygon eutawensis n. sp. Meyer 1974 elasmobranch
Ptychotrygon cf. triangularis Reuss 1845 elasmobranch
 Myliobatiformes - Myliobatidae
Pseudohypolophus ellipsis n. sp.
Pseudohypolophus ellipsis n. sp. eagle ray
 Lamniformes - Anacoracidae
Squalicorax falcatus
Squalicorax falcatus Agassiz 1843 crow shark
 Lamniformes - Mitsukurinidae
Scapanorhynchus raphiodon
Scapanorhynchus raphiodon Agassiz 1843 goblin shark
 Lamniformes - Cretoxyrhinidae
Cretolamna appendiculata, Cretodus borodini
Cretolamna appendiculata Agassiz 1843 mackerel shark
Cretodus borodini Cappetta and Case 1975 mackerel shark
 Orectolobiformes - Orectolobidae
Microdontaspis tenuis n. gen. n. sp., Columbusia fragilis n. gen. n. sp.
Microdontaspis tenuis n. gen. n. sp. wobbegong
Columbusia fragilis n. gen. n. sp. wobbegong
 Orectolobiformes - Hemiscylliidae
Chiloscyllium sp.
Chiloscyllium sp. Müller and Henle 1837 carpet shark