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

Chondrichthyes
 Squatiniformes - Squatinidae
Squatina hassei Leriche 1929 angel shark
 Hybodontiformes - Hybodontidae
Hybodus sp. Agassiz 1837 elasmobranch
 Hybodontiformes - Lonchidiidae
"Lissodus babulskii" = Lonchidion babulskii
"Lissodus babulskii" = Lonchidion babulskii Cappetta and Case 1975 elasmobranch
 Hybodontiformes - Ptychodontidae
Ptychodus mortoni Agassiz 1843 elasmobranch
 Rajiformes -
Erguitaia rugosa n. sp. ray
Protoplatyrhina renae Case 1978 guitarfish
 Sclerorhynchiformes - Sclerorhynchidae
Borodinopristis ackermani n. sp. elasmobranch
Ischyrhiza georgiensis n. sp. elasmobranch
Ischyrhiza mira Leidy 1856 elasmobranch
 Sclerorhynchiformes - Ptychotrygonidae
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. eagle ray
 Lamniformes - Anacoracidae
Squalicorax falcatus Agassiz 1843 crow shark
 Lamniformes - Mitsukurinidae
Scapanorhynchus raphiodon Agassiz 1843 goblin shark
 Lamniformes - Cretoxyrhinidae
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. Müller and Henle 1837 carpet shark