Spurdog

Spurdogs
Spiny dogfish, Squalus acanthias
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Chondrichthyes
Subclass:	Elasmobranchii
Order:	Squaliformes
Family:	Squalidae
Genus:	Squalus Linnaeus, 1758
Species
See text.

Template:Sharksportal Squalus is a genus of dogfish sharks, one of two genera in the family Squalidae. Commonly known as spurdogs, these sharks are characterized by smooth dorsal fin spines, teeth in upper and lower jaws similar in size, caudal peduncle with lateral keels; upper precaudal pit usually present, and caudal fin without subterminal notch.

The name comes from squalus, the Latin for shark; this word is the root for numerous words related to sharks such as squaline, and scientific names for sharks, such as the order Squaliformes.

Species

• Spiny dogfish, Squalus acanthias (Linnaeus, 1758).
• Squalus acutirostris (Chu, Meng & Li, 1984).
• Longnose spurdog, Squalus blainville (Risso, 1827).
• Cuban dogfish, Squalus cubensis (Howell-Rivero, 1936).
• Japanese spurdog or Japanese roughshark, Squalus japonicus (Ishikawa, 1908).
• Shortnose spurdog, Squalus magalops (Macleay, 1881).
• Blacktailed spurdog, Squalus melanurus (Fourmanoir & Rivaton, 1979).
• Shortspine spurdog, Squalus mitsukurii (Jordan & Snyder, 1903).
• Cyrano spurdog, Squalus rancureli (Fourmanoir & Rivaton, 1979).
• Bartail spurdog, Squalus sp. A
• Eastern highfin spurdog, Squalus sp. B
• Western highfin spurdog, Squalus sp. C
• Fatspine spurdog, Squalus sp. D
• Western longnose spurdog, Squalus sp. E
• Eastern longnose spurdog, Squalus sp. F

References

• "Squalus". Integrated Taxonomic Information System. 4 May. {{cite web}}: Check date values in: |date= and |year= / |date= mismatch (help)
• Froese, Rainer; Pauly, Daniel (eds.). "Species in genus Squalus". FishBase. January 2006 version.
• Compagno, Dando, & Fowler, Sharks of the World, Princeton University Press, New Jersey 2005 ISBN 0-691-12072-2