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
Risultati 1-3 di 81
Pagina 349
... corners . Anterior margins of pelvics nearly straight on small specimens , usually more convex on larger ; outer corners moderately rounded , the posterior corners usually more broadly rounded but varying widely in degree of curvature ...
... corners . Anterior margins of pelvics nearly straight on small specimens , usually more convex on larger ; outer corners moderately rounded , the posterior corners usually more broadly rounded but varying widely in degree of curvature ...
Pagina 365
... corners but weakly concave anterior to level of eyes ; outer corners abruptly rounded to subangular , forming approx- imately a right angle ; posterior corners more broadly rounded ; posterior margins weakly convex , increasingly so ...
... corners but weakly concave anterior to level of eyes ; outer corners abruptly rounded to subangular , forming approx- imately a right angle ; posterior corners more broadly rounded ; posterior margins weakly convex , increasingly so ...
Pagina 492
... corners subangular ; rear corners narrowly rounded or subangular ; inner margins moderately convex , about half as long as distance between eyes . Dorsal fin with mod- erately convex anterior margin and broadly rounded apex ; posterior ...
... corners subangular ; rear corners narrowly rounded or subangular ; inner margins moderately convex , about half as long as distance between eyes . Dorsal fin with mod- erately convex anterior margin and broadly rounded apex ; posterior ...
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