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 154
... region . 6 b . Disc anterior to level of axils of pectorals with conspicuous thorns either along midline , around orbits , on scapular regions , or on all three parts . 8 a . No thorns on scapular regions . 9a . Tail with only one row ...
... region . 6 b . Disc anterior to level of axils of pectorals with conspicuous thorns either along midline , around orbits , on scapular regions , or on all three parts . 8 a . No thorns on scapular regions . 9a . Tail with only one row ...
Pagina 155
... region to first dorsal . 13a . No large thorns on margins of orbits ; about 42 thorns . in mid - dorsal row ... region . macloviana Norman 1937 . Patagonian - Falklands region.66 14b . Inner parts of pectorals mostly smooth ; each scap ...
... region to first dorsal . 13a . No large thorns on margins of orbits ; about 42 thorns . in mid - dorsal row ... region . macloviana Norman 1937 . Patagonian - Falklands region.66 14b . Inner parts of pectorals mostly smooth ; each scap ...
Pagina 197
... region ; additional large thorns also developing with growth over shoulder region as a whole , around orbits , and in 2-3 irregular rows along rostral ridge ; also a few developing in space between orbits in some specimens . The outer ...
... region ; additional large thorns also developing with growth over shoulder region as a whole , around orbits , and in 2-3 irregular rows along rostral ridge ; also a few developing in space between orbits in some specimens . The outer ...
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