Template:McNulty & Slaughter, 1972

• McNulty, C.L. & Slaughter, B.H. 1972. The Cretaceous Selachian Genus, Ptychotrygon JAEKEL 1894. Eclogae Geologicae Helvetiae 65(3): 647–656, fig. 1-2, pl. 1.  
  • Find all Wikispecies pages which cite this reference.