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Spurdog

Squalus acanthias

Classification

Family
Squalidae

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.

Distribution

(c) Ecomare/Salko de Wolf, some rights reserved (CC BY-SA) · CC-BY-SA
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Countries in the Picchu catalog
United Kingdom · 52,076France · 33Netherlands · 26Germany · 2Spain · 1