Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and raysJohn Tee-Van Sears Foundation for Marine Research, Yale Univ., 1948 |
Dall'interno del libro
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Pagina 154
... disc not marked with black dots or streaks . 6a . No large thorns anywhere on disc anterior to level of axils of pectorals . 7a . Distance from cloaca to tip of tail shorter than that from cloaca to tip of snout ; outer posterior parts ...
... disc not marked with black dots or streaks . 6a . No large thorns anywhere on disc anterior to level of axils of pectorals . 7a . Distance from cloaca to tip of tail shorter than that from cloaca to tip of snout ; outer posterior parts ...
Pagina 363
... disc with narrowly projecting snout , and pelvic fins with long anterior margins and narrowly pointed and somewhat falcate outer corners . Description.103 Proportional dimensions in per cent of extreme breadth . Disc : length 103.0 ...
... disc with narrowly projecting snout , and pelvic fins with long anterior margins and narrowly pointed and somewhat falcate outer corners . Description.103 Proportional dimensions in per cent of extreme breadth . Disc : length 103.0 ...
Pagina 372
... disc ; the presence of a cutaneous tailfold above as well as below ; and , in the case of half - grown specimens or older , the tubercle - strewn area on its disc is relatively much less extensive , and the mid - dorsal tubercles on the ...
... disc ; the presence of a cutaneous tailfold above as well as below ; and , in the case of half - grown specimens or older , the tubercle - strewn area on its disc is relatively much less extensive , and the mid - dorsal tubercles on the ...
Sommario
SAWFISHES GUITARFISHES SKATES and RAYS | 1 |
Genus Zapteryx | 74 |
Suborder Myliobatoidea | 331 |
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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 - 1953 |
Parole e frasi comuni
Acad Amer batoids Bigelow and Schroeder biol Brazil breadth Breder 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 Interspace Jersey Jordan Lacépède length of base listed lobe long as distance Lower surface mature males median Müller and Henle nasal curtain pelvic fins Philad Poiss posterior margin prickles Proc Raja Rays rearward Rio de Janeiro rostral rostral cartilage rounded Sawfishes side Skates spiracles Study Material tail spine teeth thorns tip of snout tip of tail Torpedo transverse type species U. S. Bur U. S. Comm U. S. nat upper surface Woods Hole Zool