Genus Isistius

Cigar shark - The cookiecutter shark , also called the cigar shark, is a species of small dogfish shark in the family Dalatiidae.

 
 

Isistius labialis - Reproduction is aplacental viviparity in the same way as great white sharks.

Largetooth cookie-cutter shark - The largetooth cookiecutter shark was originally described by New Zealand ichthyologist Jack Garrick and American shark expert Stewart Springer, in a 1964 issue of the scientific journal Copeia.

Order : Squaliformes
Family : Dalatiidae
Genus : Isistius