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 99
... mouth , and 82-92 % as great as distance between inner ends of openings of first pair . Nostrils moderately oblique , close to mouth but entirely separate from it ; distance between their inner ends ( con- cealed by the nasal curtain ) ...
... mouth , and 82-92 % as great as distance between inner ends of openings of first pair . Nostrils moderately oblique , close to mouth but entirely separate from it ; distance between their inner ends ( con- cealed by the nasal curtain ) ...
Pagina 108
... mouth ; posterior margin of nostril also somewhat expanded outwardly as a low flap , directed toward the mouth . Mouth narrow , transverse , ap- proximately straight , and protractile as a short tube , flattened dorsoventrally.111 Teeth ...
... mouth ; posterior margin of nostril also somewhat expanded outwardly as a low flap , directed toward the mouth . Mouth narrow , transverse , ap- proximately straight , and protractile as a short tube , flattened dorsoventrally.111 Teeth ...
Pagina 485
... mouths , apparently employing the flexible cephalic fins " to assist in scooping the food into the mouth , " as described in more detail on p . 493. Old tales that they use these fins to grasp swimmers or objects such as the anchor ...
... mouths , apparently employing the flexible cephalic fins " to assist in scooping the food into the mouth , " as described in more detail on p . 493. Old tales that they use these fins to grasp swimmers or objects such as the anchor ...
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 - 1948 |
Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Anteprima non disponibile - 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