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 84
Pagina 365
... broad ; nine embryos , 108 to 133 mm broad , eight with small yolk sac still attached and one with umbilical scar only ; all from Rio de Janeiro and vicinity , Para , and Marajo Island at the mouth of the Amazon River , in the ...
... broad ; nine embryos , 108 to 133 mm broad , eight with small yolk sac still attached and one with umbilical scar only ; all from Rio de Janeiro and vicinity , Para , and Marajo Island at the mouth of the Amazon River , in the ...
Pagina 372
... broad to a little broader than long ( maximum about 1.1 times as broad as long ) ; snout projecting as a broad - based triangle with pointed tip ; maximum anterior angle in front of spiracles about 107-122 ° ; outer corners broadly ...
... broad to a little broader than long ( maximum about 1.1 times as broad as long ) ; snout projecting as a broad - based triangle with pointed tip ; maximum anterior angle in front of spiracles about 107-122 ° ; outer corners broadly ...
Pagina 478
... broad as long ; those of the first series out- ward are about 3.5-5.0 times as broad as long , and those of the next series on either side are about 1.7-2.0 times as broad as long . Normally the teeth in the outermost two series are ...
... broad as long ; those of the first series out- ward are about 3.5-5.0 times as broad as long , and those of the next series on either side are about 1.7-2.0 times as broad as long . Normally the teeth in the outermost two series are ...
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