Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and raysJohn Tee-Van Sears Foundation for Marine Research, Yale Univ., 1953 |
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Pagina 43
... extending only a little past mouth in some , for various distances thence forward in others , and nearly to midline of snout in extreme cases . Two well developed dorsal fins , the first originating much closer to tips of pelvics than ...
... extending only a little past mouth in some , for various distances thence forward in others , and nearly to midline of snout in extreme cases . Two well developed dorsal fins , the first originating much closer to tips of pelvics than ...
Pagina 157
... extending about 60- 70 % of distance from level of front of orbits toward tip of snout , the latter not ap- preciably projecting ; anterior contour only weakly concave rearward from tip of snout and then a little more deeply so opposite ...
... extending about 60- 70 % of distance from level of front of orbits toward tip of snout , the latter not ap- preciably projecting ; anterior contour only weakly concave rearward from tip of snout and then a little more deeply so opposite ...
Pagina 254
... extending about 2 / , of the distance from axils of pelvics toward first dorsal ; inner margin straight . Claspers falling well short of tips of pelvics on specimens seen . Rostral cartilage firm , extending to tip of snout . Anterior ...
... extending about 2 / , of the distance from axils of pelvics toward first dorsal ; inner margin straight . Claspers falling well short of tips of pelvics on specimens seen . Rostral cartilage firm , extending to tip of snout . Anterior ...
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 - 1953 |
Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Visualizzazione estratti - 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