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 531
... caudal origin a little anterior to upper origin . Caudal filament , beyond most posterior ray on lower side of caudal fin , nearly as long as distance from snout to origin of pelvic fins on small specimen , perhaps on large as well , 57 ...
... caudal origin a little anterior to upper origin . Caudal filament , beyond most posterior ray on lower side of caudal fin , nearly as long as distance from snout to origin of pelvic fins on small specimen , perhaps on large as well , 57 ...
Pagina 535
John Tee-Van. 2a . Tip of pectoral fin not reaching beyond origin of pelvics when laid back . 3a . Pectoral fins reaching nearly to origin of pelvic fins when laid back ; height of second dorsal at midlength not more than 1 , as great as ...
John Tee-Van. 2a . Tip of pectoral fin not reaching beyond origin of pelvics when laid back . 3a . Pectoral fins reaching nearly to origin of pelvic fins when laid back ; height of second dorsal at midlength not more than 1 , as great as ...
Pagina 535
... fins reaching nearly to origin of pelvic fins when laid back ; height of second dorsal at midlength not more than 1 , as great as length of anterior margin of first dorsal ; apex of first dorsal angular ; cranial mucous canal on each ...
... fins reaching nearly to origin of pelvic fins when laid back ; height of second dorsal at midlength not more than 1 , as great as length of anterior margin of first dorsal ; apex of first dorsal angular ; cranial mucous canal on each ...
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