Palaeospinax

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.[5]

Palaeospinax Temporal range: 250–60 Ma PreꞒ Ꞓ O S D C P T J K Pg N Early Triassic-Eocene
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Order:	†Synechodontiformes
Family:	†Palaeospinacidae
Genus:	†Palaeospinax Egerton, 1872[1]
Type species
†Paleospinax priscus Agassiz 1843[2]
Species[3]
†Palaeospinax finspine Agassiz 1843[2] †Palaeospinax priscus Agassiz 1843[2]
Synonyms[4]
†Paleospinax †Synechodus Woodward, 1888

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.

• 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.