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
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Pagina 457
... teeth nearly straight along midsector but somewhat bowed rearward toward outer ends , the posterior teeth more strongly so than the anteriors ; anterior 4-6 teeth so worn down by friction with lower teeth that their median 2 / -4 / 5 is ...
... teeth nearly straight along midsector but somewhat bowed rearward toward outer ends , the posterior teeth more strongly so than the anteriors ; anterior 4-6 teeth so worn down by friction with lower teeth that their median 2 / -4 / 5 is ...
Pagina 468
... teeth ; R. adspersa Müller and Henle 184120 from the Malay Peninsula and India , R. jayakari Boulenger 189521 from Arabia , R. neglecta Ogilby 191222 from Australia , and R. sewelli Misra 194723 from India , all with nine series of teeth ...
... teeth ; R. adspersa Müller and Henle 184120 from the Malay Peninsula and India , R. jayakari Boulenger 189521 from Arabia , R. neglecta Ogilby 191222 from Australia , and R. sewelli Misra 194723 from India , all with nine series of teeth ...
Pagina 478
... teeth , the specimens listed as R. brasil- iensis resemble R. bonasus so exactly in general appearance and in proportionate dimen- sions that to describe them in detail would merely repeat the description of R. bonasus . The teeth , as ...
... teeth , the specimens listed as R. brasil- iensis resemble R. bonasus so exactly in general appearance and in proportionate dimen- sions that to describe them in detail would merely repeat the description of R. bonasus . The teeth , as ...
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 |
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