The extinct great whites represented in the Lee Creek fauna are Cosmopolitodus hastalis and C. xiphodon. C. hastalis is a Pungo River species. The teeth (particularly the laterals), are similar to Isurus desori except broader with less pointed roots.

Although occasionally found in the Pungo River, Cosmopolitodus xiphodon is most common in the lower Yorktown. and appears derived from C. hastalis. C. xiphodon teeth are similar to those of hastalis, but the roots tend to be taller and the crown more labio-lingually compressed, creating a wider appearance. For information on the genus see — Cosmopolitodus.

Cosmopolitodus hastalis (AGASSIZ, 1843)

Fig. 1 - Cosmopolitodus hastalis lingual view

Fig. 2 - Cosmopolitodus hastalis unusual variation with lateral cusplets Pungo River, slant height 33 mm

Cosmopolitodus xiphodon (AGASSIZ,1833-1844)

Fig. 3 - Cosmopolitodus xiphodon lingual view of specimens

Fig. 4 - Cosmopolitodus xiphodon variation reflects development of serrations Yorktown, slant height 40 mm