Fishes of the Western North Atlantic: LanceletsSears Foundation for Marine Research, Yale Univ., 1948 |
Dall'interno del libro
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Pagina 64
... latter is bridged by one group of true sharks ( Squatinoidea , p . 533 ) . Skeletal differences between the two groups are considerable , however , correspond- ing chiefly to the highly specialized external features of the rays . Thus ...
... latter is bridged by one group of true sharks ( Squatinoidea , p . 533 ) . Skeletal differences between the two groups are considerable , however , correspond- ing chiefly to the highly specialized external features of the rays . Thus ...
Pagina 110
... latter nearly as large as former ; meta- and mesopterygia not separated by a foramen ; heart valves in 3 rows . Development ovoviviparous . Genera . One of the members of this family , set apart from all the others by its trian- gular ...
... latter nearly as large as former ; meta- and mesopterygia not separated by a foramen ; heart valves in 3 rows . Development ovoviviparous . Genera . One of the members of this family , set apart from all the others by its trian- gular ...
Pagina 197
... latter.12 In this respect , and in others also , it is so aberrant that we have recently proposed the new genus ... latter to the mouth , for among the species with well developed lower labial furrows and no upper furrow are some in ...
... latter.12 In this respect , and in others also , it is so aberrant that we have recently proposed the new genus ... latter to the mouth , for among the species with well developed lower labial furrows and no upper furrow are some in ...
Sommario
LANCELETS BY HENRY B BIGELOW and ISABEL PÉREZ FARFANTE I | 1 |
CYCLOSTOMES BY HENRY B BIGELOW and WILLIAM C SCHROEDER | 29 |
SHARKS BY HENRY B BIGELOW and WILLIAM C SCHROEDER | 59 |
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Parole e frasi comuni
1st dorsal 2nd dorsal Acad Amer anal Anal fin atriopore Aust biol Brazil Brit Bull Carcharhinus Carcharias Carolina Caudal fin caudal peduncle coast Comp concave convex Copeia corner of mouth Cuba cusps Dermal denticles descr diameter of eye distal margin distrib dorsal fin embryos Fauna feet female Fish Florida Fowler front of mouth Garman genus gill opening Gulf of Maine Harv Hist horizontal diameter inner corner inner margin Interspace Jersey labial furrow length in front length of base Linnaeus lobe long as base lower teeth Medit Müller and Henle myotomes North nostrils origin of pectoral outer margin ovoviviparous Pectoral fin Philad Poey Poiss posterior margin precaudal pit Proc Rafinesque refs ridges Second dorsal Shark snout in front specimens spiracles Squalus Stewart Springer total length type species U.S. Bur U.S. Comm U.S. nat upper tooth vertical height Woods Hole Zool zygaena