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Pagina 7
But their chief distinguishing characters — mouth on the left side , atrial chamber
unclosed and gill slits in an unpaired medio - ventral series-are those of larval
Lancelets in general at an early stage of development ( p . 23 ) , and it now
seems ...
But their chief distinguishing characters — mouth on the left side , atrial chamber
unclosed and gill slits in an unpaired medio - ventral series-are those of larval
Lancelets in general at an early stage of development ( p . 23 ) , and it now
seems ...
Pagina 31
Six to 15 pairs of gill pouches , opening internally into the pharynx , those on
each side opening either separately to the exterior or by a single common
aperture ; 2 pairs of barbels on side of nostril and 1 or 2 pairs at side of mouth ;
single ...
Six to 15 pairs of gill pouches , opening internally into the pharynx , those on
each side opening either separately to the exterior or by a single common
aperture ; 2 pairs of barbels on side of nostril and 1 or 2 pairs at side of mouth ;
single ...
Pagina 32
Gill pouches on each side connect with exterior by single common aperture .
Myxine Linnaeus , 1758 , p . 32 . Atlantic and Pacific Oceans . ib . All gill pouches
on each side open independently to exterior . 2a . Gill openings on each side ( 16
...
Gill pouches on each side connect with exterior by single common aperture .
Myxine Linnaeus , 1758 , p . 32 . Atlantic and Pacific Oceans . ib . All gill pouches
on each side open independently to exterior . 2a . Gill openings on each side ( 16
...
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Sommario
LANCELETS By Henry B BIGELOW and Isabel PÉREZ FARFANTE | 1 |
CYCLOSTOMES BY HENRY B Bigelow and WILLIAM C SCHROEDER | 29 |
SHARKS BY HENRY B BIGELOW and William C SCHROEDER | 59 |
Copyright | |
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Fishes of the Western North Atlantic: Editorial Board: Editor-in ..., Parte 4 John Tee-Van Visualizzazione frammento - 1948 |
Fishes of the Western North Atlantic, Edizione 1,Parte 3 John Tee-Van Visualizzazione frammento - 1948 |
Parole e frasi comuni
2nd dorsal abund Acad Amer anal appears Atlantic base Bermuda biol breadth Brit broad Bull Carcharias caudal Characters close coast Comp concave considerably Copeia corner Cuba cusps descr developed distance dorsal fin edges embryos Fauna feet female Fish Florida Fowler front of mouth furrow genus gill openings Gulf habits Harv head Hist ident inner Island Jersey Jordan known larger latter least length less listed lobe lower male margin moderately mouth nearly North nostrils origin outer pectoral pelvics Philad Poiss posterior probably Proc range rear record References relatively reported ridges rounded Second dorsal seen separate Shark side slightly snout South southern species specimens Squalus Stewart Springer taken teeth tooth total length Trunk U.S. Comm U.S. nat upper vertical height West western Woods Hole York Zool