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 84
Pagina 191
... Males tend to reach adolescence at a somewhat greater size , the general range being from 36 to 45 cm ; we have found immature males as large as 44 cm and fully mature males at 37 cm . With respect to the average length and weight of ...
... Males tend to reach adolescence at a somewhat greater size , the general range being from 36 to 45 cm ; we have found immature males as large as 44 cm and fully mature males at 37 cm . With respect to the average length and weight of ...
Pagina 283
... males developing 12-13 large thorns near margins of disc opposite eyes but losing the prickles from midbelt of disc . Alar spines of mature males in several irregular rows , covering a roughly triangular area that extends forward along ...
... males developing 12-13 large thorns near margins of disc opposite eyes but losing the prickles from midbelt of disc . Alar spines of mature males in several irregular rows , covering a roughly triangular area that extends forward along ...
Pagina 409
... males 1.8 to 2.2 , females 1.8 to 1.9 ; 3rd , males 1.9 to 2.2 , females 1.8 to 1.9 ; 5th , males 1.0 to 1.2 , females 0.9 to 1.2 ; distance between inner ends , Ist , males 15.0 to 15.9 , females 15.9 to 16.6 ; 5th , males 10.4 to 11.4 ...
... males 1.8 to 2.2 , females 1.8 to 1.9 ; 3rd , males 1.9 to 2.2 , females 1.8 to 1.9 ; 5th , males 1.0 to 1.2 , females 0.9 to 1.2 ; distance between inner ends , Ist , males 15.0 to 15.9 , females 15.9 to 16.6 ; 5th , males 10.4 to 11.4 ...
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