Protostegidae
Reptiles
Protostegidae is a family of extinct marine turtles that lived during the Cretaceous period. The family includes some of the largest sea turtles that ever existed. The largest, Archelon, had a head one metre long. Wikipedia
Extinction status: Extinct
Higher classification: Sea turtles
Scientific name: Protostegidae
Clade: Panchelonioidea (?)
Family: †Protostegidae; Cope, 1873
Kingdom: Animalia
Lower classifications