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
Risultati 1-3 di 91
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 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 ...
Pagina 428
... disc . Upper surface of disc naked . microphthalmum Delsman 1941 , p . 428 . Ib . Snout in front of eyes only about 1 , as long as breadth of disc . Upper surface mostly prickly on disc and with a median row of slightly larger spines on ...
... disc . Upper surface of disc naked . microphthalmum Delsman 1941 , p . 428 . Ib . Snout in front of eyes only about 1 , as long as breadth of disc . Upper surface mostly prickly on disc and with a median row of slightly larger spines on ...
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