Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and raysJohn Tee-Van Sears Foundation for Marine Research, Yale Univ., 1953 |
Dall'interno del libro
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Pagina 18
... characters of the rostral teeth that a recent enumeration40 lists not less than 12 genera . But it is likely that the number of these would be reduced considerably were material available for as critical a comparison of them as can be ...
... characters of the rostral teeth that a recent enumeration40 lists not less than 12 genera . But it is likely that the number of these would be reduced considerably were material available for as critical a comparison of them as can be ...
Pagina 323
... Characters . Rajidae with the six to eight median rays of each pectoral elongated to form a narrow spatula - shaped lobe . Outer margins of pelvics so weakly concave that fins are not definitely bilobed . Cranium with rostral cartilage ...
... Characters . Rajidae with the six to eight median rays of each pectoral elongated to form a narrow spatula - shaped lobe . Outer margins of pelvics so weakly concave that fins are not definitely bilobed . Cranium with rostral cartilage ...
Pagina 497
... Characters . Mouth on lower surface of head , with teeth in the upper jaw only . Other characters as in Mobula . Range . Known definitely from only a single specimen from Jamaica . Species . C. robertsii Boulenger 1897 , from Jamaica ...
... Characters . Mouth on lower surface of head , with teeth in the upper jaw only . Other characters as in Mobula . Range . Known definitely from only a single specimen from Jamaica . Species . C. robertsii Boulenger 1897 , from Jamaica ...
Sommario
SAWFISHES GUITARFISHES SKATES and RAYS | 1 |
Suborder Myliobatoidea | 331 |
Dasyatis say | 378 |
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Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Visualizzazione estratti - 1948 |
Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Anteprima non disponibile - 1948 |
Parole e frasi comuni
Acad Amer axils of pectorals batoids Bigelow and Schroeder biol Brazil breadth Bull Carolina cartilage caudal fin center of cloaca Chesapeake Bay claspers Coast color comp concave Copeia Dasyatis Dermal denticles descr distance between inner dorsal fin embryos Evermann exposed nostrils eyes fathoms female Florida Fowler front of mouth front of orbits Garman genus gill openings Gulf Gulf of Maine Harv Hist inner ends Jersey Jordan Lacépède length of base Linnaeus listed lobe long as distance Lower surface mature males Müller and Henle Narcine nasal curtain pectoral fins pelvic fins Philad Poiss posterior margin prickles Proc Raja rearward Rio de Janeiro rostral rounded Sawfishes side Skates spiracles Study Material tail spine teeth thorns tip of snout tip of tail Torpedo transverse Trygon type species U. S. Bur U. S. Comm U. S. nat upper surface Woods Hole Zool