Vogtle Electric Generating Plant (Eocene of the United States)

Where: Burke County, Georgia (33.1° N, 81.8° W: paleocoordinates 33.7° N, 70.3° W)

• coordinate based on nearby landmark

• small collection-level geographic resolution

When: NP 16 nannofossil zone, Blue Bluff Formation, Lutetian (47.8 - 41.3 Ma)

• Hulbert et al (1998) state that the age is latest Lutetian or Bartonian, NP 16. Geisler & Beatty (2010) state that it it Lutetian.

• bed-level stratigraphic resolution

Environment/lithology: deep subtidal shelf; poorly lithified, concretionary, gray, argillaceous lime mudstone

• upper part of an 8 m bed that "was soft and poorly indurated" with "small concretions""relatively shallow but open water. A shelf environment is inferred...""Aragonitic mollusks and anthozoans are preserved either as external or internal molds, but calcitic shells appear unaltered"
• gray argillaceous calcilutite

Size class: macrofossils

Preservation: original calcite

Primary reference: R. C. Hulbert, R. M. Petkewich, G. A. Bishop, D. Bukry, and D. P. Aleshire. 1998. A new middle Eocene protocetid whale (Mammalia: Cetacea: Archaeoceti) and associated biota from Georgia. Journal of Paleontology 72(5):907-927 [J. Alroy/J. Alroy/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 4868: authorized by John Alroy, entered by John Alroy on 27.08.1999

Creative Commons license: CC BY (attribution)

Taxonomic list

 Carcharhiniformes - Carcharhinidae
Carcharhinus cf. macloti Muller and Henle 1839 requiem shark
Triaenodon sp. Mueller and Henle 1837 requiem shark
 Lamniformes - Mitsukurinidae
"Carcharias macrota" = Striatolamia macrota
"Carcharias macrota" = Striatolamia macrota Agassiz 1838 goblin shark
 Myliobatiformes - Myliobatidae
Myliobatidae indet. Bonaparte 1838 eagle ray
 Cetacea - Protocetidae
Georgiacetus vogtlensis n. gen. n. sp.
Georgiacetus vogtlensis n. gen. n. sp. Hulbert et al. 1998 whale
 Acipenseriformes -
Cylindracanthus rectus Agassiz 1843 ray-finned fish
 Cerithioidea - Turritellidae
"Turritella carinata" = Haustator carinata, Turritella nasuta
"Turritella carinata" = Haustator carinata Lea 1833 turret shell
Turritella nasuta turret shell
 Cardiida - Anatinellidae
Pteropsella lapidosa Conrad 1846 clam
 Ostreida - Ostreidae
Cubitostrea sellaeformis Conrad 1832 oyster
 Ostreida - Pinnidae
Pinnidae indet. Leach 1819 oyster
Bryozoa indet. Ehrenberg 1831
Cirripedia indet. barnacle
Anthozoa indet. Ehrenberg 1834
Dinomastigota indet. Margulis 1996
"at least two unidentified dinoflagellates"
 Isochrysidales - Noelaerhabdaceae
 Syracosphaerales - Rhabdosphaeraceae
Rhabdosphaera sp. Haeckel 1894
"narrow and wide tubes"
 Prymnesiophycidae - Prymnesiophycidae
Pontosphaera sp. Lohmann 1961
Zygrhablithus bijugatus Deflandre and Fert 1954
Braarudosphaera bigelowii Gran and Braarud 1935
Zygolithus dubius Deflandre and Fert 1954
Discoaster sp. Tan 1902
Coccolithus pelagicus Wallich 1877
Coccolithus formosus Kamptner 1963
 Coccolithales - Coccolithaceae
Chiasmolithus modestus Perch-Nielsen 1971
Chiasmolithus solitus Bramlette and Sullivan 1961
 Globigerinina - Truncorotaloididae