Ptyktoptychion

Ptyktoptychion is an extinct genus of chimaeras known from the Early Cretaceous of Australia.^[1]

Ptyktoptychion Temporal range: Early Cretaceous PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Holocephali
Order:	Chimaeriformes
Family:	Callorhinchidae
Genus:	†Ptyktoptychion Lees, 1986
Species
Ptyktoptychion tayyo Lees, 1986 Ptyktoptychion wadeae Bartholomai, 2008