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Oxynotus paradoxus:   (click for more)

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FAO Names
En - Sailfin roughshark, Fr - Humantin, Sp - Cerdo marino velero.
3Alpha Code: OXN     Taxonomic Code: 1090500602
Scientific Name with Original Description
Oxynotus paradoxus  Frade, 1929, Bull. Soc.Portugaise Sci.Nat., 10(22):22, fig. 1. Holotype: In Museu Bocage, Lisbon, apparently lost in a fire that destroyed the museum. Type Locality: Off Morocco.
Diagnostic Features
fieldmarks: Short, blunt snout, high, sail-like dorsal fins with spines, no anal fin, first dorsal spine inclined backward, high, thick, triangular body with large, rough denticles, lanceolate upper teeth, lower bladelike teeth in less than 12 rows, blackish coloration.

Spiracle small and circular. Supraorbital ridges not greatly expanded and not forming a knob in front of spiracles.  Apices of dorsal fins narrowly triangular, posterior margins strongly concave; first dorsal spine inclined backward.  Blackish or dark brown, without prominent markings. 
Geographical Distribution

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Eastern North Atlantic: Atlantic slope from Scotland to Senegal.
Habitat and Biology
An uncommon deepwater bottom shark found on the Atlantic continental slope,at depths from 265 to 720 m. Moderately abundant off British Isles.
Ovoviviparous. 
Size
Maximum total length about 118 cm; size at birth about 25 cm.
Interest to Fisheries
Caught in bottom trawls.
Used for fishmeal.Uncommon as a bycatch of offshore trawling fleets.
Source of Information
FAO species catalogue Vol.4. Sharks of the world. An Annotated and Illustrated Catalogue of Shark Species Known to Date Part 1 - Hexanchiformes to Lamniformes. Compagno, L.J.V.1984FAO Fisheries Synopsis.  , (125) Vol.4, Part 1.
Bibliography
Cadenat & Blache, 1981
Maurin & Bonnet, 1970
Norman, 1932
Wheeler, 1978
 
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