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 85
Pagina 220
... weakly concave just posterior to tip of snout , weakly convex opposite eyes and spiracles ( no more so in males than in females ) , weakly concave thence rear- ward ; outer corners narrowly rounded , posterior corners more broadly so ...
... weakly concave just posterior to tip of snout , weakly convex opposite eyes and spiracles ( no more so in males than in females ) , weakly concave thence rear- ward ; outer corners narrowly rounded , posterior corners more broadly so ...
Pagina 449
... weakly concave in upper jaw but straight in lower ; 4-5 teeth exposed ( hence in function simultaneously ) in upper jaw and 9-10 exposed in lower jaw on newborn specimens ; about II rows exposed in adults . Subrostral fin broadly ...
... weakly concave in upper jaw but straight in lower ; 4-5 teeth exposed ( hence in function simultaneously ) in upper jaw and 9-10 exposed in lower jaw on newborn specimens ; about II rows exposed in adults . Subrostral fin broadly ...
Pagina 449
... weakly convex ; posterior margins moderately concave , increasingly so outward ; outer corners moderately rounded ( a little more broadly so than in M. freminvillii ) ; posterior corners about a right angle , blunted at tip ; inner ...
... weakly convex ; posterior margins moderately concave , increasingly so outward ; outer corners moderately rounded ( a little more broadly so than in M. freminvillii ) ; posterior corners about a right angle , blunted at tip ; inner ...
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