Recently collected chimaeroid specimens from Lower Cretaceous (Albian) marine sediments of the Great Artesian Basin in Queensland, Australia, have enabled the taxonomy of these relatively rare fishes in these deposits to be clarified. Two Lower Cretaceous taxa were described from Australia in recent times, viz. Edaphodon eyrensis Long, 1985, and Ptyktoptychion tayyo Lees, 1986. A new species, P.
... [Show full abstract] wadeae, is here described from palatine, vomerine and mandibular tooth plates and is shown to differ significantly from the existing taxa. The holotype of the type species, P. tayyo, considered to be a mandibular tooth plate at the time of its description is identified as a palatine tooth plate. Mandibular tooth plates among the recently collected specimens are referred to this species and described.
