Fossil Information (Phanerozoic Eon)

Fossil Type:Tooth
Fossil Description:Mackerel shark
Relative Size:Medium
Scientific Name (Genus species):Archaeolamna kopingensis (Davis, 1890) (also called Plicatolamna arcuata and Cretodus arcuatus) formerly Odontaspis kopingensis (Davis, 1890) and Lamna arcuata (Woodward, 1894)
Epoch/Age:Eocene (Mid Miocene to Late Eocene 7 to 49 mya)
MYA:34 to 55
Discovery Location (Water, Land):Shark River
Discovery Location (City, ST):Wall/Neptune, NJ
Discovery Location (County):Monmouth
Deepest Formation:Shark River/Manasquan undifferentiated
Color:Brown root, dark brown crown
Comments:Triangular crown curved back, no striations, no serrations (smooth cutting edges), wide stocky U-shaped root, triangular side cusplets, bilobate roots with a U-shaped basal margin and a lingual protuberance, weak nutrient groove
Collector Name:RLD
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