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Temporal range: 250–60 Ma
Early Triassic - Eocene
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Selachimorpha
Order: Synechodontiformes
Family: Palaeospinacidae
Genus: Palaeospinax
Egerton, 1872
Type species
Paleospinax priscus

Palaeospinax is an extinct genus of shark which lived from the Early Triassic to the end of the Eocene epoch. Although several species have been described, the genus is considered nomen dubium because the type-specimen of the type species, Paleospinax priscus, lacks appropriate diagnostic characters to define the genus.[1]


  1. ^ Klug, Stefanie; Kriwet, Jürgen (2008). "A new basal galeomorph shark (Synechodontiformes, Neoselachii) from the Early Jurassic of Europe". Naturwissenschaften. 95 (5): 443–448. doi:10.1007/s00114-007-0341-0. PMID 18196213. 
  • Maisey, J. G. (1977). "The fossil selachian fishes Palaeospinax Egerton, 1872 and Nemacanthus Agassiz, 1837". Zoological Journal of the Linnean Society. 60 (3): 259–273. doi:10.1111/j.1096-3642.1977.tb01029.x.