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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 seriesare 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 seriesare those of larval
Lancelets in general at an early stage of development ( p . 23 ) , and it now
seems ...
Pagina 62
Fish - like vertebrates with well developed lower jaws and bony teeth ; 2 pairs of
appendages supported by pectoral and pelvic girdles ; a cartilaginous skeleton
which , while more or less calcified , lacks any true bone ; scales essentially tooth
...
Fish - like vertebrates with well developed lower jaws and bony teeth ; 2 pairs of
appendages supported by pectoral and pelvic girdles ; a cartilaginous skeleton
which , while more or less calcified , lacks any true bone ; scales essentially tooth
...
Pagina 96
Development oviparous , ovoviviparous , or viviparous . Key to Families Ia . Only
1 dorsal fin . ... Nostril connected with mouth by a deep groove , its anterior
margin with a well developed barbel . Orectolobidae , p . 178 . 46. Nostril not ...
Development oviparous , ovoviviparous , or viviparous . Key to Families Ia . Only
1 dorsal fin . ... Nostril connected with mouth by a deep groove , its anterior
margin with a well developed barbel . Orectolobidae , p . 178 . 46. Nostril not ...
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Sommario
LANCELETS BY HENRY B BIGELOW and ISABEL PÉREZ FARFANTE | 1 |
Branchiostoma platae | 12 |
CYCLOSTOMES BY HENRY B BIGELOW and WilLIAM C SCHROEDER | 29 |
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Altre edizioni - Visualizza tutto
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 longer lower male margin moderately mouth nearly North nostrils origin outer pectoral pelvics Philad Poiss posterior probably Proc range rear record References refs relatively reported ridges rounded 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