Actinodontidae

Actinodontidae is an extinct family of temnospondyls that lived during the Permian period. The family is a sister taxon to Archegosauridae, under the superfamily Archegosauroidea^[1].Though air-breathing via lungs, they would have been more physiologically similar to fishes than present amphibians or tetrapods; living primarily in brackish or freshwater environments.^[2]

Not to be confused with the mollusk family in the infraclassis Heteroconchia.

Actinodontidae Temporal range: Early Permian-Late Permian 290–259 Ma PreꞒ Ꞓ O S D C P T J K Pg N
Image of Actinodon frossardi
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Clade:	Tetrapoda
Order:	†Temnospondyli
Superfamily:	†Archegosauroidea
Family:	†Actinodontidae Lydekker, 1885
Genera
†Chelydosaurus †Chelydosaurus marahomensis †Chelydosaurus vranii †Syndyodosuchus †Syndyodosuchus tetricus