"Squalus" redirects here. For the submarine called Squalus, see USS Sailfish (SS-192).
Spurdogs
Temporal range: 89.8–0 Ma
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Campanian to Present[1]
Spiny dogfish (Squalus acanthias)
Scientific classification
Domain:
Eukaryota
Kingdom:
Animalia
Phylum:
Chordata
Class:
Chondrichthyes
Subclass:
Elasmobranchii
Subdivision:
Selachimorpha
Order:
Squaliformes
Family:
Squalidae
Genus:
Squalus Linnaeus, 1758
Type species
Squalus acanthias
Linnaeus, 1758
Synonyms
Squalis Radermacher, 1779 (Missp.)
Acanthorhinus de Blainville, 1816
Acanthias Leach, 1818[2]
Flakeus Whitley, 1939[3]
Koinga Whitley, 1939[4]
Squalus is a genus of dogfish sharks 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. In spurdogs, the hyomandibula (the bone connecting the braincase to the jaws) is oriented at a right angle to the neurocranium, while in other sharks, the hyomandibula runs more parallel to the body. This led some to think that the upper jaw of Squalus would not be as protractile as the jaws of other sharks. However, a study that compared different jaw suspension types in sharks showed that this is not the case and that Squalus is quite capable of protruding its upper jaw during feeding.[5]
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.
^Sepkoski, J.J.Jr (2002). "A Compendium of Fossil Marine Animal Genera". Bulletins of American Paleontology. 363: 1–560.
^ZooBank: Acanthias Leach, 1818
^ZooBank: Flakeus Whitley, 1939
^ZooBank: Koinga Whitley, 1939
^Wilga, C.D., Motta, P.J. & Sanford, C.P. (2007): Evolution and ecology of feeding in elasmobranchs. Integrative and Comparative Biology, 47 (1): 55-69.
is a genus of dogfish sharks in the family Squalidae. Commonly known as spurdogs, these sharks are characterized by smooth dorsal fin spines, teeth in upper...
spurdog) Squalus altipinnis Last, W. T. White & J. D. Stevens, 2007 (western high-fin spurdog) Squalus blainville (A. Risso, 1827) (long-nose spurdog)...
The shortnose spurdog (Squalus megalops) also known as the piked spurdog is a small shark located primarily off the coast of Southern Australia and South...
Sharks portal The Seychelles spurdog (Squalus lalannei) is a dogfish described in 2003. It is a member of the family Squalidae, found off the Seychelles...
Sharks portal The Indonesian shortsnout spurdog (Squalus hemipinnis) is a dogfish described in 2007. It is a member of the family Squalidae, found off...
The Cyrano spurdog (Squalus rancureli) is a dogfish, a member of the family Squalidae, found in the western central Pacific Ocean between latitudes 16°S...
Sharks portal The blacktailed spurdog (Squalus melanurus) is a dogfish, a member of the family Squalidae, found around New Caledonia in the central Pacific...
Sharks portal The greeneye spurdog (Squalus chloroculus) is a species of dogfish described in 2007. It is a member of the family Squalidae, found off...
Sharks portal The longnose spurdog (Squalus blainville) is a dogfish shark of the genus Squalus, found over continental shelves in all oceans, at depths...
Sharks portal The roughskin spurdog (Cirrhigaleus asper) is a dogfish of the family Squalidae, found circumglobally between latitudes 35°N and 35°S, at...
The shortspine spurdog (Squalus mitsukurii) is a dogfish, a member of the family Squalidae, found on continental shelves off Japan in temperate waters...
The bighead spurdog (Squalus bucephalus) is a rare and little-known species of dogfish shark in the family Squalidae. It is found in deep water south...
Sharks portal The Japanese spurdog (Squalus japonicus) is a dogfish, a member of the family Squalidae. It is found in the western Pacific Ocean – southeastern...
The Japanese shortnose spurdog (Squalus brevirostris) is a dogfish shark in the genus Squalus. It is found from southern Japan to the South China Sea...
The spiny dogfish (Squalus acanthias), spurdog, mud shark, or piked dogfish is one of the best known species of the Squalidae (dogfish) family of sharks...
Eastern highfin spurdog (S. albifrons) Western highfin spurdog (S. altipinnis) Longnose spurdog (S. blainville) S. brevirostris Bighead spurdog (S. bucephalus)...
The Taiwan spurdog (Squalus formosus) is a species of shark in the genus Squalus. It was accidentally found in Taiwan's Tashi fish market by William Toby...
Sharks portal Squalus montalbani, the Philippine spurdog or Indonesian greeneye spurdog, is a relatively large species of dogfish shark native to waters...
Eastern highfin spurdog (S. albifrons) Western highfin spurdog (S. altipinnis) Longnose spurdog (S. blainville) S. brevirostris Bighead spurdog (S. bucephalus)...
Squalus crassispinus, the fatspine spurdog, is a dogfish of the family Squalidae, found on the continental shelf off the northern coast of Western Australia...
Squalus nasutus, the western longnose spurdog, is a dogfish of the family Squalidae, found on the continental shelf off the northwest and southwest coasts...
Japanese spurdog (S. japonicus) Shortnose spurdog (S. megalops) Blacktailed spurdog (S. melanurus) Shortspine spurdog (S. mitsukurii) Bartail spurdog (S. notocaudatus)...
Eastern highfin spurdog (S. albifrons) Western highfin spurdog (S. altipinnis) Longnose spurdog (S. blainville) S. brevirostris Bighead spurdog (S. bucephalus)...
the leafscale gulper shark (Centrophorus squamosus) or the shortspine spurdog (Squalus mitsukurii). Males mature sexually at 28–33 cm (11–13 in) long...
Japanese spurdog (S. japonicus) Shortnose spurdog (S. megalops) Blacktailed spurdog (S. melanurus) Shortspine spurdog (S. mitsukurii) Bartail spurdog (S. notocaudatus)...
Japanese spurdog (S. japonicus) Shortnose spurdog (S. megalops) Blacktailed spurdog (S. melanurus) Shortspine spurdog (S. mitsukurii) Bartail spurdog (S. notocaudatus)...
spurdog) Squalus altipinnis Last, W. T. White & J. D. Stevens, 2007 (Western highfin spurdog) Squalus blainville (A. Risso, 1827) (Long-nose spurdog)...
Squalus grahami, the eastern longnose spurdog, is a dogfish of the family Squalidae, found off northern Queensland, at depths between 220 and 500 m. Its...
Squalus albifrons, the eastern highfin spurdog, is a dogfish described in 2007. It is a member of the family Squalidae, found on the continental shelf...
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