Tiucetus Temporal range: Tortonian ~11–9 Ma PreꞒ Ꞓ O S D C P T J K Pg N ↓
Holotype skull in lateral view
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Artiodactyla
Infraorder:	Cetacea
Family:	Cetotheriidae
Genus:	†Tiucetus Marx, Lambert & De Muizon 2017

Tiucetus is an extinct genus of cetotheriid baleen whale known from the Late Miocene Pisco Formation of Peru.

Tiucetus is distinct from other cetotheriids in having a squamosal cleft; from eomysticetids in having comparatively short nasals, a more anteriorly projected supraoccipital and parietal, and a tympanic bulla that is rotated so that the inner posterior prominence faces dorsally.^[1]

Tiucetus falls basally in Cetotheriidae, less derived than Joumocetus and Cephalotropis.

Other marine mammals found in the Pisco Formation include another cetotheriid, Piscobalaena, the odd dolphin Odobenocetops, the killer sperm whale Acrophyseter, the long-necked seal Acrophoca, and aquatic sloth Thalassocnus.

This prehistoric cetacean-related article is a stub. You can help Wikipedia by expanding it.

• v
• t
• e