Pantolestidae

Pantolestidae Temporal range: Late Cretaceous–Oligocene PreꞒ Ꞓ O S D C P T J K Pg N
Palaeosinopa, from Wyoming eocene
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	†Cimolesta
Suborder:	†Pantolesta
Family:	†Pantolestidae Cope, 1884
Genera
Bessoecetor Bisonalveus Buxolestes Palaeosinopa Pantolestes Pentacodon Dyspterna

Pantolestidae is an extinct family of semi-aquatic, non-placental eutherian mammals. Forming the core of the equally extinct suborder Pantolesta, the pantolestids evolved as a series of increasingly otter-like forms, ranging from the Middle Paleocene (60 mya) Bessoecetor to the Late Eocene (Ergilian) (50-33 mya) Gobiopithecus and Kiinkerishella. They first appear in North America, whence they spread to Europe.^[1]