Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and raysJohn Tee-Van Sears Foundation for Marine Research, Yale Univ., 1948 |
Dall'interno del libro
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Pagina 27
... nearly so , on basal teeth but more or less channeled longitudinally farther out on saw , perhaps as result of wear , thus giving each tooth two longitudinal cutting edges posteriorly . Head from base of saw to level of first gill ...
... nearly so , on basal teeth but more or less channeled longitudinally farther out on saw , perhaps as result of wear , thus giving each tooth two longitudinal cutting edges posteriorly . Head from base of saw to level of first gill ...
Pagina 442
... nearly straight , coarsely fringed with short rounded lobelets . Mouth nearly straight transversely , occupying about half of breadth of head . Floor of mouth , poste- rior to dental plate , with 5-6 blunt fleshy papillae ; transverse ...
... nearly straight , coarsely fringed with short rounded lobelets . Mouth nearly straight transversely , occupying about half of breadth of head . Floor of mouth , poste- rior to dental plate , with 5-6 blunt fleshy papillae ; transverse ...
Pagina 505
... nearly touching in some places but wider- spaced elsewhere ; tubercles on lower surface about equally large , their bases oval and radially striate , the crests nearly horizontal and vertically truncate posteriorly ; their longitudinal ...
... nearly touching in some places but wider- spaced elsewhere ; tubercles on lower surface about equally large , their bases oval and radially striate , the crests nearly horizontal and vertically truncate posteriorly ; their longitudinal ...
Sommario
SAWFISHES GUITARFISHES SKATES and RAYS | 1 |
Genus Zapteryx | 74 |
Suborder Myliobatoidea | 331 |
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Fishes of the Western North Atlantic: Sawfishes, guitarfishes, skates and rays John Tee-Van Visualizzazione estratti - 1953 |
Parole e frasi comuni
Acad Amer batoids Bigelow and Schroeder biol Brazil breadth Breder 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 Interspace Jersey Jordan Lacépède length of base listed lobe long as distance Lower surface mature males median Müller and Henle nasal curtain pelvic fins Philad Poiss posterior margin prickles Proc Raja Rays rearward Rio de Janeiro rostral rostral cartilage rounded Sawfishes side Skates spiracles Study Material tail spine teeth thorns tip of snout tip of tail Torpedo transverse type species U. S. Bur U. S. Comm U. S. nat upper surface Woods Hole Zool