Ptyktoptychion

{{Short description|Extinct genus of cartilaginous fishes}}

{{Automatic taxobox

| fossil_range = {{fossilrange|Early Cretaceous}}

| taxon = Ptyktoptychion

| authority = Lees, 1986

| subdivision_ranks = Species

| subdivision = *Ptyktoptychion tayyo Lees, 1986

• Ptyktoptychion wadeae Bartholomai, 2008

}}

Ptyktoptychion is an extinct genus of chimaeras known from the Early Cretaceous of Australia.{{cite journal |doi=10.1080/03115518608619154|title=A new chimaeroid Ptyktoptychion tayyogen. Et sp. Nov. (Pisces:Holocephali) from the marine Cretaceous of Queensland|year=1986|last1=Lees|first1=Tempe A.|journal=Alcheringa: An Australasian Journal of Palaeontology|volume=10|issue=3|pages=187–193}}