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 133
... outer margins ranging from only weakly concave to so deeply so that anterior division of fin forms a limb - like structure entirely detached from the posterior part , three - jointed and ( as it seems ) separately movable . Orbits ...
... outer margins ranging from only weakly concave to so deeply so that anterior division of fin forms a limb - like structure entirely detached from the posterior part , three - jointed and ( as it seems ) separately movable . Orbits ...
Pagina 491
... outer ends roofed over by nasal curtain ; distance between outer ends of nostrils 60-65 % as great as breadth of head at level of mouth ; outer posterior margin of nostril with a broad subtriangular lobe extending inward over nasal ...
... outer ends roofed over by nasal curtain ; distance between outer ends of nostrils 60-65 % as great as breadth of head at level of mouth ; outer posterior margin of nostril with a broad subtriangular lobe extending inward over nasal ...
Pagina 499
... outer ends of nostrils ; fifth about 3/4 ( 74 % ) as long as third . Nasal openings oblique , all but their outer ends concealed by nasal curtain ; distance between outer ends of nostrils a little more than half of width of head at ...
... outer ends of nostrils ; fifth about 3/4 ( 74 % ) as long as third . Nasal openings oblique , all but their outer ends concealed by nasal curtain ; distance between outer ends of nostrils a little more than half of width of head at ...
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