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 88
Pagina 10
... close to it . Even the Sawfishes ( Pristidae ) keep close to the bottom , except when they may rise among a school of fishes ; although they are slow swimmers they are strong , as any angler will testify who has hooked or harpooned one ...
... close to it . Even the Sawfishes ( Pristidae ) keep close to the bottom , except when they may rise among a school of fishes ; although they are slow swimmers they are strong , as any angler will testify who has hooked or harpooned one ...
Pagina 58
... close beyond rear end of second dorsal ; each shoulder with 2-4 somewhat lower tubercles , with one over each outer end of pectoral girdle13 on small as well as on large specimens ; 4-7 larger and smaller and more conical ones close in ...
... close beyond rear end of second dorsal ; each shoulder with 2-4 somewhat lower tubercles , with one over each outer end of pectoral girdle13 on small as well as on large specimens ; 4-7 larger and smaller and more conical ones close in ...
Pagina 517
... close in front of first internal gill cleft . External gill openings low down on sides , close in front of origins of pectoral fins . Anus close in front of origin of pelvic fins , the uro- genital openings close behind . Dental plates ...
... close in front of first internal gill cleft . External gill openings low down on sides , close in front of origins of pectoral fins . Anus close in front of origin of pelvic fins , the uro- genital openings close behind . Dental plates ...
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