Xenorophidae

Xenorophidae is an extinct family of odontocetes, currently known from the Oligocene of the Southeastern United States. Known genera of xenorophids include Albertocetus, Archaeodelphis, Xenorophus,^[2] Cotylocara,^[3] Echovenator,^[4] and Inermorostrum.^{[5][excessive citations]}

Albertocetus reconstruction outline, showing known bones in red. From Boessenecker et al. 2017

Xenorophidae Temporal range: 30–23.03 Ma PreꞒ Ꞓ O S D C P T J K Pg N Oligocene[1]
Cotylocara
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Mammalia
Order:	Artiodactyla
Infraorder:	Cetacea
Parvorder:	Odontoceti
Family:	†Xenorophidae Uhen, 2008
Genera
Albertocetus Archaeodelphis Cotylocara Echovenator Inermorostrum Mirocetus Xenorophus