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 15
... sometimes obsolete ; and are intersected by complete transverse tabulæ . A rudimentary columella is pres- The animal of Pocillopora has been examined by Profes- sor Verrill ( loc . jam cit . ) , who describes the polypes as being ...
... sometimes obsolete ; and are intersected by complete transverse tabulæ . A rudimentary columella is pres- The animal of Pocillopora has been examined by Profes- sor Verrill ( loc . jam cit . ) , who describes the polypes as being ...
Página 16
... sometimes obsolete ( some forms of Trachypora , & c . ) , sometimes in the form of marginal lamellæ or ridges ( Nyctopora , Nich . ) , and most commonly represented by vertically - disposed rows of spinules ( most species of Favo- sites ) ...
... sometimes obsolete ( some forms of Trachypora , & c . ) , sometimes in the form of marginal lamellæ or ridges ( Nyctopora , Nich . ) , and most commonly represented by vertically - disposed rows of spinules ( most species of Favo- sites ) ...
Página 17
... sometimes imperfect ( Favosites hemispherica , Yand . and Shum . ) After an extended study of the minute structure of the Favositida , I cannot doubt but that Professor Verrill and Dr Lindström are right in referring all the Corals ...
... sometimes imperfect ( Favosites hemispherica , Yand . and Shum . ) After an extended study of the minute structure of the Favositida , I cannot doubt but that Professor Verrill and Dr Lindström are right in referring all the Corals ...
Página 18
... , of a spiniform and rudi- mentary character , are present as a rule . The tabulæ are well developed , more or less funnel - shaped , and sometimes giving rise to an axial tube in the median line. 18 TABULATE CORALS .
... , of a spiniform and rudi- mentary character , are present as a rule . The tabulæ are well developed , more or less funnel - shaped , and sometimes giving rise to an axial tube in the median line. 18 TABULATE CORALS .
Página 30
... sometimes lamellar or frondescent ( some types of Pachypora and Cœnites ) ; and Romingeria , Nich . , affords an example of a subfasciculate corallum , as to a less extent does also the genus Vermipora , Hall . The corallites radiate ...
... sometimes lamellar or frondescent ( some types of Pachypora and Cœnites ) ; and Romingeria , Nich . , affords an example of a subfasciculate corallum , as to a less extent does also the genus Vermipora , Hall . The corallites radiate ...
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