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 74
Pagina 355
... tail ; maximum breadth of lower tailfold ( under middle of spine or spines ) about 1/3 as great as height of tail at same point . Tail spines one , sometimes two or three , with replacement spine growing anterior to older ones on ...
... tail ; maximum breadth of lower tailfold ( under middle of spine or spines ) about 1/3 as great as height of tail at same point . Tail spines one , sometimes two or three , with replacement spine growing anterior to older ones on ...
Pagina 392
... spine ; either side with a low and obscure longitudinal ridge extending from about opposite tips of pelvics to about half the distance toward spine ; lower surface of tail with a low ridge extending from below origin of spine past tip ...
... spine ; either side with a low and obscure longitudinal ridge extending from about opposite tips of pelvics to about half the distance toward spine ; lower surface of tail with a low ridge extending from below origin of spine past tip ...
Pagina 393
... spine ; either side with a low and obscure longitudinal ridge extending from about opposite tips of pelvics to about half the distance toward spine ; lower surface of tail with a low ridge extending from below origin of spine past tip ...
... spine ; either side with a low and obscure longitudinal ridge extending from about opposite tips of pelvics to about half the distance toward spine ; lower surface of tail with a low ridge extending from below origin of spine past tip ...
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 - 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