A very rare, EXTRA LARGE Otodus sokolovi upper jaw, anterior tooth from Kert, Mangyshlak, western Kazakhstan. A November Fossil of the Month. This location produces top quality teeth with brown colored enamel. The extra large bourlette that is complete. Nice extra coarse serrations and killer, large side cusps with very irregular serrations. The root is very thivh (~1-1/8") and complete.These teeth exhibit exceptional color, gloss, and preservation. Lower Schorym Formation - Bartonian - 40 MYA. This is a rare, late Eocene "Auriculatus" tooth also known as Otodus sokolovi! No repair or restoration. Authenticity guaranteed. I haven't seen these BIG Kazakh teeth since 2003! My last O. sokolovi teeth to offer.
This catalog contains excellent teeth from an extinct Otodontid shark - Carcharocles auriculatus, a precursor to the Megalodon. The early Carcharocles auriculatus is fully serrated with very large serrations and highly irregular cusps serrations.
The Evolutionary Path to Megalodon - transition from the non-serrate Otodus obliquus to the fully serrated Auriculatus tooth - The Kazakhstan early Eocene sediments are one of the few places in the world where the transition to the fully serrated Auriculatus tooth can be observed and collected. The transition teeth representing the progression from Otodus obliquus to the Auriculatus are as follows.
Carcharocles mugodzharicus or Otodus mugodzharicus - has very fine serrations covering lower 2/3s of the crown (sometimes the serrations can be the wavy "Escheri-like" serrations) and little to no side cusp serrations.
Carcharocles aksuaticus or Otodus aksuaticus - a semi-serrated or finely serrated tooth that can have moderate sized serrations at the base of the crown. The side cusps will have few serrations.
Kazakhstan site - These teeth are very rare, early Eocene (Ypresian) in age (approx. 55 mya) from Kzil-Orda region in western Kazakhstan (new location).Note - this location has been collected for ~3 summers and it is now exhausted. This is the last of the material from this site that made it to US. Some incredibly rare teeth are posted.
Note - teeth from the Kert, Mangyshlak site are found in the L. Schorym Fm. and are late Eocene age (Bartonian) - 37 MYA.