On the Structure and Affinities of the "Tabulate Corals" of the Palaeozoic Period: With Critical Descriptions of Illustrative SpeciesWilliam Blackwood, 1879 - 342 páginas |
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Página 24
... ( five to ten in number ) project into the visceral chambers of the polypes , which are crossed by irregular but well - developed tabulæ , and likewise often communicate with neighbouring tubes by means of canals passing horizontally ...
... ( five to ten in number ) project into the visceral chambers of the polypes , which are crossed by irregular but well - developed tabulæ , and likewise often communicate with neighbouring tubes by means of canals passing horizontally ...
Página 69
... five or six inches in diameter . On the other hand , Emmonsia hemispherica , E. and H. , is typically " hemispheri- cal " in form , and is often eight or ten inches in diameter ( Billings gives two or three feet as the maximum diameter ...
... five or six inches in diameter . On the other hand , Emmonsia hemispherica , E. and H. , is typically " hemispheri- cal " in form , and is often eight or ten inches in diameter ( Billings gives two or three feet as the maximum diameter ...
Página 71
... five of which occupy the space of two lines , the state of matters in these corallites thus resembling what we see in F. Gothlandica , Lam . In other tubes , again , there are few or no complete tabulæ , but the visceral chamber is ...
... five of which occupy the space of two lines , the state of matters in these corallites thus resembling what we see in F. Gothlandica , Lam . In other tubes , again , there are few or no complete tabulæ , but the visceral chamber is ...
Página 75
... five lines in diameter , attached by its base , but having its whole free surface covered by the calices , Calices open only in parts of the surface , and especially towards the ends of the branches , but elsewhere closed by flat or ...
... five lines in diameter , attached by its base , but having its whole free surface covered by the calices , Calices open only in parts of the surface , and especially towards the ends of the branches , but elsewhere closed by flat or ...
Página 87
... five lines in diameter , dividing at frequent intervals , and terminating in rounded ends . Corallites radiating from the axis of the corallum , and diverging outwards to open on all parts of the free surface ; their walls thickened by ...
... five lines in diameter , dividing at frequent intervals , and terminating in rounded ends . Corallites radiating from the axis of the corallum , and diverging outwards to open on all parts of the free surface ; their walls thickened by ...
Outras edições - Ver tudo
On the Structure and Affinities of the "Tabulate Corals" of the Palaeozoic ... Henry Alleyne Nicholson Visualização integral - 1879 |
On the Structure and Affinities of the "Tabulate Corals" of the Palaeozoic ... Henry Alleyne Nicholson Visualização integral - 1879 |
On the Structure and Affinities of the "Tabulate Corals" of the Palaeozoic ... Henry Alleyne Nicholson Visualização integral - 1879 |
Palavras e frases frequentes
Actinozoa affinities Alcyonaria allied alveolata Alveolites appear Aulopora Beaumontia Billings Brit calices Carboniferous Char.-Corallum characters Chatetes Chonostegites cœnenchyma Columnaria Constellaria contiguous corallites contiguous tubes coral corallum D'Orb Devonian distinct Dr Lindström Dr Rominger Edwards and Haime Eifel enlarged five enlarged twenty epitheca Favosites Favositida Fistulipora Forbesi Foss genus Goldf Goldfuss Gothlandica Halysites Heliolites Heliolitida horizontal Hydrozoa interstitial Labechia lamellæ large corallites large tubes larger latter line in diameter longitudinal Lonsd M'Coy Michelinia microscopic Milne-Edwards and Haime Monticulipora mural pores numerous Ontario Pachypora perforated polygonal Polyzoa pora Portion present prismatic radiating recognised regarded resemblance ridges sclerenchyma sections Pl separated septa small corallites small tubes smaller species specimens spines spiniform Stenopora Syringopora tabulæ Tabulata Tabulate Corals tangential section Tetradium Thecia thickened thin sections tissue transverse section Upper Silurian upper surface vertical section visceral chamber walls Wenlock Wenlock Limestone Zoantharia