Mammalia - Cetacea - Kentriodontidae

Alternative combination: Grypolithax obscura

Synonym: Grypolithax pavida Kellogg 1931

Full reference: R. Kellogg. 1931. Pelagic mammals of the Temblor Formation of the Kern River region, California. Proceedings of the California Academy of Science 19(12):217-397

Belongs to Kentriodon according to L. G. Barnes and E. D. Mitchell 1984

Sister taxa: Kentriodon fuchsii, Kentriodon hobetsu, Kentriodon pernix, Kentriodon schneideri

Type specimens:

• Kentriodon obscurus: CAS 4349, an other (periotic). Its type locality is Sharktooth Hill, which is in a Langhian coastal siltstone in the Temblor Formation of California.
• Grypolithax pavida: CAS 4348, an other (periotic). Its type locality is Sharktooth Hill, which is in a Langhian coastal siltstone in the Temblor Formation of California.

Ecology: aquatic carnivore