Echinorhinus

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Echinorhinus
Temporal range: 84–0 Ma[1]
Campanian to Present
Echinorhinus brucus.jpg
Bramble shark, Echinorhinus brucus
Echinorhinidae - Echinorhinus brucus.JPG
Echinorhinus brucus, mounted specimen, on display at the Museo storia naturale di Pisa
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Superorder: Selachimorpha
Order: Squaliformes
Family: Echinorhinidae
T. N. Gill, 1862
Genus: Echinorhinus
Blainville, 1816
Echinorhinus species distmaps.svg
The distribution of the two Echinorhinus species

Echinorhinus is the only extant genus in the family Echinorhinidae.

Taxonomy[edit]

While some scientists have proposed that Echinorhinidae be given an order separate from Squaliformes, the general current consensus is that Echinorhinidae is still a family in the order Squaliformes [2]

Etymology[edit]

The name is from Greek echinos meaning "spiny" and rhinos meaning "nose".

Species[edit]

Description[edit]

This genus includes two extant species of uncommon, little-known sharks. Both species are relatively large sharks, at 3.1 to 4.0 m (10.2 to 13.1 ft) in body length. They are characterized by a short nose and by rough thorn-like dermal denticles scattered over its body, some of which may be fused together. They have no anal fin. Two small spineless dorsal fins are positioned far back.

Biology[edit]

They are ovoviviparous, with the mother retaining the egg-cases inside her body until they hatch, producing litters up to 24 pups.[3] They feed on smaller sharks, smaller bony fish, and on crabs and cephalopods.

Distribution[edit]

These sharks are found worldwide in cold temperate to tropical seas from the surface down to a depth of 900 m (3,000 ft).[3]

See also[edit]

References[edit]

  1. ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Chondrichthyes entry)". Bulletins of American Paleontology 364: 560. Retrieved 2008-01-09. 
  2. ^ Compagno, 2005. "Sharks of the World". ISBN 9780691120720
  3. ^ a b Froese, Rainer, and Daniel Pauly, eds. (2009). "Echinorhinidae" in FishBase. January 2009 version.