The Rocks (Eocene of the United States)

Also known as Creagh Plantation

Where: Clarke County, Alabama (31.7° N, 88.0° W: paleocoordinates 32.2° N, 80.1° W)

• coordinate estimated from map

When: Pachuta Member (Yazoo Formation), Priabonian (38.0 - 33.9 Ma)

• member-level stratigraphic resolution

Environment/lithology: foreshore; claystone

• The Yazoo Clay Formation exhibits a shallow subtropical inner shelf environment with abundant life evolving into a deeper more clay-dominated middle shelf environment.

Size class: macrofossils

Preservation: original phosphate

Primary reference: R. Harlan. 1835. Description of the remains of the "Basilosaurus," a large fossil marine animal, recently discovered in the horizontal limestone of Alabama. Transactions of the Geological Society of Pennsylvania 1:348-357 [M. Uhen/M. Uhen]more details

Purpose of describing collection: taxonomic analysis

PaleoDB collection 45637: authorized by Mark Uhen, entered by Mark Uhen on 20.11.2004

Creative Commons license: CC BY (attribution)

Taxonomic list

Chondrichthyes
 Odontaspidida - Alopiidae
Alopias latidens4 Leriche 1909 thresher shark
subspecies alabamensis n. subsp.
 Rhinopristiformes - Pristidae
Pristis sp.4 Linck 1790 sawfish
 Myliobatiformes - Myliobatidae
Myliobatis sp.4 Cuvier 1816 eagle ray
 Lamniformes - Carchariidae
Physodon secundus4 Winkler 1876 mackerel shark
 Lamniformes - Odontaspididae
Odontaspis hopei4, Odontaspis malletiana n. sp.4, "Odontaspis ? verticalis" = Hypotodus verticalis4
Odontaspis hopei4 Agassiz 1843 sand tiger shark
Odontaspis malletiana n. sp.4 White 1956 sand tiger shark
"Odontaspis ? verticalis" = Hypotodus verticalis4 Agassiz 1843 sand tiger shark
 Carchariniformes - Carcharhinidae
"Scyliorhinus enniskilleni n. sp." = Abdounia enniskilleni4, "Hypoprion greyegertoni n. sp." = Aprionodon greyegertoni4, Galeocerdo clarkensis n. sp.4, "Negaprion gibbesi" = Carcharhinus gibbesi4
"Scyliorhinus enniskilleni n. sp." = Abdounia enniskilleni4 White 1956 requiem shark
"Hypoprion greyegertoni n. sp." = Aprionodon greyegertoni4 White 1956 requiem shark
Galeocerdo clarkensis n. sp.4 White 1956 tiger shark
"Negaprion gibbesi" = Carcharhinus gibbesi4 Woodward 1889 requiem shark
 Carchariniformes - Hemigaleidae
Hemipristis wyattdurhami n. sp.4 White 1956 ground shark
 Carchariniformes - Triakidae
Galeorhinus cf. falconeri4 White 1956 school shark
 Heterodontiformes - Heterodontidae
Heterodontus cf. woodwardi4 Caiser 1956 bullhead shark
Mammalia
 Cetacea - Basilosauridae
Basilosaurus cetoides2 Owen 1839 whale
Cynthiacetus maxwelli3 Uhen 2005 whale
Echinoidea
 Temnopleuroida -
Gagaria americana n. sp.1 Clark and Twitchell 1915 sea urchin
 Cidaroida - Cidaridae
Cidaris smithi n. sp.1 Clark and Twitchell 1915 pencil urchin
said to be from the Oligocene "St. Stephens limestone" (upper portion)