Carcharias koerti Tallahatta Form.

Black river fossils likes to say that one.

Cicimurri seems adamant that these sharks are not Serratolamna, though there is still plenty of disagreement over the assignment of this taxon. I am going to stick with Serratolamna until there is a broader consensus.

Parmley, Dennis

Cicimurri, David J.

Pub Date:

09/22/2003

Publication:

Name: Georgia Journal of Science Publisher: Georgia Academy of Science

Late Eocene sharks of the Hardie Mine local fauna of Wilkinson County, Georgia.

"Carcharias sp. aff. C. koerti (Stromer 1910)

Eocene teeth of the type described above have variously been referred to Lamna (18), Cretolamna (20) and Serratolamna (9). Though the crown morphology is similar, the Hardie Mine l.f. teeth can be distinguished from Cretolamna by the consistent presence of a weak nutritive groove, which is usually absent in Cretoxyrhinidae (8). A lingual nutritive groove is found on teeth of Serratolamna (29), which can also have up to three pairs of lateral cusplets (30). The teeth in our sample generally have one large pair of lateral cusplets and, if present, a second smaller pair. For these reasons we exclude this tooth type from Cretolamna and Serratolamna, and place it within Carcharias, retaining the species epithet koerti, which is a taxon originally described by Stromer (31) from the Eocene of Africa."