Platyhystrix is a terrestrial amphibian whose unique physical characteristic is its dorsal collar. The males use their veil, larger than the females, to parade and attract his last. Sometimes, when two males fight over the same female, they first use their veil and screams to intimidate before fighting. Platyhystrix is a carnivore that eats insects and small amphibians, but it is itself a favorite for larger amphibians like Eryops.
It was show in chinese prehistoric documentary "Back to the Permian 4D".