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 81
Pagina 455
... head anterior to spiracles nearly flat or weakly convex , somewhat converging downward ; lower surface of head weakly convex transversely . Orbits only moderately prominent ; eyes circular , their upper mar- gins about at point of ...
... head anterior to spiracles nearly flat or weakly convex , somewhat converging downward ; lower surface of head weakly convex transversely . Orbits only moderately prominent ; eyes circular , their upper mar- gins about at point of ...
Pagina 480
... head , its transverse axis nearly vertical ; the two cephalic fins widely separated one from the other ; their basal attachments to head extending from below spiracle upward and forward to upper anterior extension of cranium ; supported ...
... head , its transverse axis nearly vertical ; the two cephalic fins widely separated one from the other ; their basal attachments to head extending from below spiracle upward and forward to upper anterior extension of cranium ; supported ...
Pagina 547
... head , increasingly so rearward , its thickness about / as great as its height opposite bases of pelvic fins . 4 Skin perfectly smooth on immature specimen , except closely pock - marked with many depressions of different sizes on top ...
... head , increasingly so rearward , its thickness about / as great as its height opposite bases of pelvic fins . 4 Skin perfectly smooth on immature specimen , except closely pock - marked with many depressions of different sizes on top ...
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