Xenorophidae is an extinct

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

odontocetes The toothed whales (also called odontocetes, systematic name Odontoceti) are a Order (biology), parvorder of cetaceans that includes dolphins, porpoises, and all other whales with teeth, such as beaked whales and the sperm whales. 73 species of t ...

, currently known from the

Oligocene The Oligocene ( ) is a geologic epoch (geology), epoch of the Paleogene Geologic time scale, Period that extends from about 33.9 million to 23 million years before the present ( to ). As with other older geologic periods, the rock beds that defin ...

of the

Southeastern United States The Southeastern United States, also known as the American Southeast or simply the Southeast, is a geographical List of regions in the United States, region of the United States located in the eastern portion of the Southern United States and t ...

. Known genera of xenorophids include '' Albertocetus'', '' Archaeodelphis'', '' Xenorophus'', '' Cotylocara'', '' Echovenator'', and '' Inermorostrum''.. Albertocetus reconstruction outline

References

Prehistoric toothed whales Prehistoric mammal families Oligocene cetaceans Fauna of the Southeastern United States {{paleo-whale-stub