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 46
... my determination has been founded upon an examination of actual specimens derived from the same formation as that which yielded examples to the author quoted . half line in diameter , sometimes less , and often 46 TABULATE CORALS .
... my determination has been founded upon an examination of actual specimens derived from the same formation as that which yielded examples to the author quoted . half line in diameter , sometimes less , and often 46 TABULATE CORALS .
Página 47
With Critical Descriptions of Illustrative Species Henry Alleyne Nicholson. half line in diameter , sometimes less , and often more . Calices regularly polygonal , with thin walls , generally tolerably uniform in size in any given ...
With Critical Descriptions of Illustrative Species Henry Alleyne Nicholson. half line in diameter , sometimes less , and often more . Calices regularly polygonal , with thin walls , generally tolerably uniform in size in any given ...
Página 49
... diameter is only about eight lines , with a height of three lines ( Pl . I. , fig . 3 ) . In the Devonian , the species seems to have assumed a much greater luxuriance of growth , examples of much larger size and of very variable form ...
... diameter is only about eight lines , with a height of three lines ( Pl . I. , fig . 3 ) . In the Devonian , the species seems to have assumed a much greater luxuriance of growth , examples of much larger size and of very variable form ...
Página 50
... diameter of from one and a half to two lines ( agreeing , on the whole , with the measurements given by Milne - Edwards and Haime in their work on the Polypiers fossiles des terr . Pal . ) ; but in one example the tubes have a diameter ...
... diameter of from one and a half to two lines ( agreeing , on the whole , with the measurements given by Milne - Edwards and Haime in their work on the Polypiers fossiles des terr . Pal . ) ; but in one example the tubes have a diameter ...
Página 51
... diameter of the corallites - even when we look only to the average tubes of a given specimen - cannot , in the case of F. Gothlandica , be regarded as a character of specific value . It is further clear that forms said to be ...
... diameter of the corallites - even when we look only to the average tubes of a given specimen - cannot , in the case of F. Gothlandica , be regarded as a character of specific value . It is further clear that forms said to be ...
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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