Fossil Information (Phanerozoic Eon)
| ID: | 296 |
| Fossil Type: | Tooth |
| Fossil Description: | Mackerel shark |
| Status: | Extinct |
| Relative Size: | Large |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| 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) |
| Era/Period: | Cenozoic/Tertiary |
| 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, brown crown |
| Dimensions: | 0.7"L |
| Comments: | Upper Anterior, 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 |
| Image Filename 1: | DSCF3975.jpg |
| Image Filename 2: | DSCF3974.jpg |
| Image Filename 3: | DSCF3978.jpg |
| Image Filename 4: | DSCF3977.jpg |