Science Fair Project Encyclopedia
Squaliformes
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Squalidae (dogfish sharks) |
Squaliformes is an order of sharks that includes the smooth dogfish and spiny dogfish and others, about 80 species in four families.
Members of the order have two dorsal fins, no anal fin, and no nictitating membrane. They have five gill slits .
See also
10-26-2009 08:16:03
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The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details