Spurdog

Taxobox
name = Spurdogs
fossil_range = Campanian to Present [cite journal
last = Sepkoski
first = Jack
authorlink =
coauthors =
title = A compendium of fossil marine animal genera (Chondrichthyes entry)
journal = Bulletins of American Paleontology
volume = 364
issue =
pages = p.560
publisher =
location =
date = 2002
url = http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=575&rank=class
doi =
id =
accessdate = 2008-01-09 ]

---

image_width = 240px
image_caption = Spiny dogfish, "Squalus acanthias"
regnum = Animalia
phylum = Chordata
classis = Chondrichthyes
subclassis = Elasmobranchii
ordo = Squaliformes
familia = Squalidae
genus = "Squalus"
genus_authority = Linnaeus, 1758
subdivision_ranks = Species
subdivision = See text.

"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.

pecies

* 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

*
*
* Compagno, Dando, & Fowler, "Sharks of the World", Princeton University Press, New Jersey 2005 ISBN 0-691-12072-2

ee also

* Roughskin spurdog "Cirrhigaleus asper"