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 87
Pagina 6
... gill openings . As development pro- ceeds , the pectorals expand rearward as well as forward past the gill openings in a form that has been variously described as blade - like or horn - like . The anterior horns of the pectorals then ...
... gill openings . As development pro- ceeds , the pectorals expand rearward as well as forward past the gill openings in a form that has been variously described as blade - like or horn - like . The anterior horns of the pectorals then ...
Pagina 283
... gill openings in females ; lower side of extremity of tail prickly on females but smooth on males . Snout in front ... gill openings 1.8-2.0 times as long as distance between exposed nostrils , about equal between fifth gill openings ...
... gill openings in females ; lower side of extremity of tail prickly on females but smooth on males . Snout in front ... gill openings 1.8-2.0 times as long as distance between exposed nostrils , about equal between fifth gill openings ...
Pagina 440
... gill openings in M. freminvillii ( as great or greater than distance between first gill openings in M. goodei of all sizes ) . Although the subrostral lobe averages longer in M. freminvillii , there is no actual discontinuity between ...
... gill openings in M. freminvillii ( as great or greater than distance between first gill openings in M. goodei of all sizes ) . Although the subrostral lobe averages longer in M. freminvillii , there is no actual discontinuity between ...
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