Hemisyntrachelus

Hemisyntrachelus is an extinct genus of cetacean.

Fossil records
This genus is known in the fossil records from the Miocene to the Quaternary (age range: from 5.332 to 1.806 million years ago). Fossils are found in the marine strata of Italy, the Netherlands, Chile and Peru.

Species
The following species have thus far been classified as belonging to this genus:.
 * Hemisyntrachelus cortesii Fischer 1829
 * Hemisyntrachelus oligodon Pilleri and Siber 1989
 * Hemisyntrachelus pisanus Biannuci 1996