Règne :
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Animalia
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Embranchement :
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Chordata
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Classe :
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Elasmobranchii
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Ordre :
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Rajiformes
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Famille :
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Rajidae
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Genre :
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Raja
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Espèce :
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clavata
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Nom Français : |
Raie bouclée
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Nom Vernaculaire : |
Thornback ray
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Description :
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upper surfaces always wholly prickly, even in early juveniles; underside wholly prickly in large females, only snout and margins of disc in young and large males. Orbital thorns separate, a regular row of 30-50 thorns from nape to first dorsal (number reduced in large males), 0-2 thorns between separate dorsal fins. Additional large 'buckler' thorns with swollen bases scattered on upper surface of disc in adults, also on underside (mainly in large females). Thorn pattern extremely variable. Colour: upper surface very variable, all shades of brown, variegated with dark and light spots and blotches, often marbled or producing patterns like eye-spots; plain coloured specimens recorded; tail usually with light and dark crossbars; underside white, margins of disc often grey. Size: to about 90 cm TL.
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Auteurs & dates :
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Raja clavata Linnaeus, 1758
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Recherche des images :
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Photo
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