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 64
Pagina 16
... rostral teeth of the Saw Sharks ( Pristiophoroidea ) but with the dorsal fin spines of Heterodontus and of some squaloid Sharks as well ; rostral teeth deeply and firmly embedded in deep sockets of the hardened cartilage of the saw in ...
... rostral teeth of the Saw Sharks ( Pristiophoroidea ) but with the dorsal fin spines of Heterodontus and of some squaloid Sharks as well ; rostral teeth deeply and firmly embedded in deep sockets of the hardened cartilage of the saw in ...
Pagina 53
... rostral cartilage widening rather noticeably toward its tip . Specimens of this sort which have the upper surface of the trunk and tail densely freckled with a large number of small pale dots were the basis for the species lentiginosus ...
... rostral cartilage widening rather noticeably toward its tip . Specimens of this sort which have the upper surface of the trunk and tail densely freckled with a large number of small pale dots were the basis for the species lentiginosus ...
Pagina 133
... ( rostral cartilage ) , the midline of snout stiffer or softer accordingly . Anterior rays of pectorals either close together at tip of snout ( when rostral cartilage is short or lacking ) or separated there by rostral cartilage ...
... ( rostral cartilage ) , the midline of snout stiffer or softer accordingly . Anterior rays of pectorals either close together at tip of snout ( when rostral cartilage is short or lacking ) or separated there by rostral cartilage ...
Sommario
SAWFISHES GUITARFISHES SKATES and RAYS | 1 |
Suborder Myliobatoidea | 331 |
Dasyatis say | 378 |
10 sezioni non visualizzate
Altre edizioni - Visualizza tutto
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