Spurdog

Squalus is a large 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

• Squalus acanthias Linnaeus, 1758 (Spiny dogfish)
• Squalus acutirostris Y. T. Chu, Q. W. Meng & S. Li, 1984
• Squalus albifrons Last, W. T. White & Stevens, 2007 (Eastern highfin spurdog)
• Squalus altipinnis Last, W. T. White & Stevens, 2007 (Western highfin spurdog)
• Squalus blainville (A. Risso, 1827) (Longnose spurdog)
• Squalus brevirostris Tanaka, 1917
• Squalus bucephalus Last, Séret & Pogonoski, 2007 (Bighead spurdog)
• Squalus chloroculus Last, W. T. White & Motomura, 2007 (Greeneye spurdog)
• Squalus crassispinus Last, Edmunds & Yearsley, 2007 (Fatspine spurdog)
• Squalus cubensis Howell-Rivero, 1936 (Cuban dogfish)
• Squalus edmundsi W. T. White, Last & Stevens, 2007 (Edmund's spurdog)
• Squalus formosus W. T. White & Iglésias, 2011^[2]
• Squalus grahami W. T. White, Last & Stevens, 2007 (Eastern longnose spurdog)
• Squalus griffini Phillipps, 1931 (Northern spiny dogfish)
• Squalus hemipinnis W. T. White, Last & Yearsley, 2007 (Indonesian shortsnout spurdog)
• Squalus japonicus Ishikawa, 1908 (Japanese spurdog)
• Squalus lalannei Baranes, 2003
• Squalus megalops (Macleay, 1881) (Shortnose spurdog)
• Squalus melanurus Fourmanoir & Rivaton, 1979 (Blacktailed spurdog)
• Squalus mitsukurii Jordan & Snyder, 1903 (Shortspine spurdog)
• Squalus montalbani Whitley, 1931 (Indonesian greeneye spurdog)
• Squalus nasutus Last, L. J. Marshall & W. T. White, 2007 (Western longnose spurdog)
• Squalus notocaudatus Last, W. T. White & Stevens, 2007 (Bartail spurdog)
• Squalus rancureli Fourmanoir & Rivaton, 1979 (Cyrano spurdog)
• Squalus raoulensis Duffy & Last, 2007 (Kermadec spiny dogfish)
• Squalus suckleyi (Girard, 1854) (Spotted spiny dogfish)
• Squalus uyato Rafinesque, 1810 (Little gulper shark)

References

1. ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Chondrichthyes entry)". Bulletins of American Paleontology 364: p.560. http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=575&rank=class. Retrieved 2008-01-09. 
2. ^ White, W.T. & Iglésias, S.P. (2011): Squalus formosus, a new species of spurdog shark (Squaliformes: Squalidae), from the western North Pacific Ocean. Journal of Fish Biology, doi:10.1111/j.1095-8649.2011.03068.x

• "Squalus". Integrated Taxonomic Information System. http://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=160616. Retrieved 4 May 2006. 
• Froese, Rainer, and Daniel Pauly, eds. (2011). Species of Squalus in FishBase. February 2011 version.
• Compagno, Dando, & Fowler, Sharks of the World, Princeton University Press, New Jersey 2005 ISBN 0-691-12072-2

See also

• Roughskin spurdog Cirrhigaleus asper
• List of prehistoric cartilaginous fish