Palaeospinax

Palaeospinax is an extinct genus of synechodontiform cartilaginous fish. Although several species have been described, the genus is considered nomen dubium because the type-specimen of the type species, Palaeospinax priscus, from the Late Triassic-Early Jurassic of Europe lacks appropriate diagnostic characters to define the genus.^[5]

Palaeospinax Temporal range: Late Triassic–Early Jurassic PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	†Synechodontiformes
Family:	†Palaeospinacidae
Genus:	†Palaeospinax Egerton, 1872[1]
Type species
†Paleospinax priscus Agassiz 1843[2]
Species[3]
†Palaeospinax priscus
Synonyms[4]
†Paleospinax †Synechodus Woodward, 1888

Other species originally described as Synechodus were transferred to the genus Palidiplospinax.

References

1. Mem. Geol. Surv. Unit. Kingdom, Dec. 13 [5] explan. pl. 7, pp. page(s): 3
2. L. Agassiz. 1843. Recherches Sur Les Poissons Fossiles. Tome III (livr. 15-16). Imprimérie de Petitpierre, Neuchatel 157-390
3. "†Palaeospinax Egerton 1872 (elasmobranch)" (html). Fossilworks. Retrieved 21 February 2019.
4. Palaeospinax Egerton, 1872 in GBIF Secretariat (2017). GBIF Backbone Taxonomy. Checklist dataset https://doi.org/10.15468/39omei accessed via https://www.gbif.org/species/4824942 on 2019-02-21.
5. Klug, Stefanie; Kriwet, Jürgen (2008). "A new basal galeomorph shark (Synechodontiformes, Neoselachii) from the Early Jurassic of Europe". Naturwissenschaften. 95 (5): 443–448. Bibcode:2008NW.....95..443K. doi:10.1007/s00114-007-0341-0. PMID 18196213. S2CID 8460659.

Further reading

• 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.