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 27
... convex toward tips which are sharp or variously blunted by wear ; anterior edge sharp ; posterior edge flat transversely , or nearly so , on basal teeth but more or less channeled longitudinally farther out on saw , perhaps as result of ...
... convex toward tips which are sharp or variously blunted by wear ; anterior edge sharp ; posterior edge flat transversely , or nearly so , on basal teeth but more or less channeled longitudinally farther out on saw , perhaps as result of ...
Pagina 38
... convex , their tips sharp on young specimens but more or less blunted on large ; basal pair of teeth separated from apparent level of emergence of saw by a distance a little greater than length of orbit . Head from origin of saw to ...
... convex , their tips sharp on young specimens but more or less blunted on large ; basal pair of teeth separated from apparent level of emergence of saw by a distance a little greater than length of orbit . Head from origin of saw to ...
Pagina 401
... convex a little anterior to level of eyes , slightly concave at level of eyes to spiracles , and increasingly convex toward outer corners , the latter moderately rounded or more abruptly so ; posterior margins weakly and almost evenly ...
... convex a little anterior to level of eyes , slightly concave at level of eyes to spiracles , and increasingly convex toward outer corners , the latter moderately rounded or more abruptly so ; posterior margins weakly and almost evenly ...
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