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 164
John Tee-Van. larger or smaller.81 Lower surface smooth , except along anterior part of tail where the lateral bands of prickles encroach somewhat on the lower surface . A comparison of larger with smaller specimens shows that the total ...
John Tee-Van. larger or smaller.81 Lower surface smooth , except along anterior part of tail where the lateral bands of prickles encroach somewhat on the lower surface . A comparison of larger with smaller specimens shows that the total ...
Pagina 218
... lower surface are marked by conspicuous black dots and dashes ( not so in R. spinicauda or in any other Raja of the western North Atlantic ) . Newly hatched specimens of R. laevis , on which the mucous pores are not yet pig- mented ( p ...
... lower surface are marked by conspicuous black dots and dashes ( not so in R. spinicauda or in any other Raja of the western North Atlantic ) . Newly hatched specimens of R. laevis , on which the mucous pores are not yet pig- mented ( p ...
Pagina 485
... surface . Like the myliobatid Rays , they progress through the water by a flapping motion of the wing - like ... lower surface . On this basis the group has been subdivided recently into two families 7 or subfamilies.68 We follow the ...
... surface . Like the myliobatid Rays , they progress through the water by a flapping motion of the wing - like ... lower surface . On this basis the group has been subdivided recently into two families 7 or subfamilies.68 We follow the ...
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