Isurus planus
| Isurus planus Temporal range: | |
|---|---|
 | |
| Isurus planus's tooth | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Chondrichthyes |
| Subclass: | Elasmobranchii |
| Division: | Selachii |
| Order: | Lamniformes |
| Family: | Lamnidae |
| Genus: | Isurus |
| Species: | †I. planus |
| Binomial name | |
| †Isurus planus | |
| Synonyms | |
Isurus planus is an extinct shark belonging to the Lamnidae family of the Miocene epoch. It has curved teeth without lateral protrusions, and aside from this, it is similar to mako shark. The tooth length of I. planus reaches up to 4.8 cm (1.9 in). This suggests that I. planus was a large predatory shark similar to the modern mako shark.