CERIOPORA. 1 95 



Family AMPLEXOPORID.E. 



Diagnosis. Trepostomata in which the zocecia are simple, 

 prismatic, or subcylindrical, with a well-marked divisional line 

 between the walls of adjoining cells. Mesopores absent. (Aborted 

 zooecia occur and sometimes resemble mesopores.) Diaphragms 

 horizontal. 



Affinities. The family Amplexoporida? has hitherto been regarded 

 as exclusively Paleozoic. It was denned by Ulrich to include the 

 genera Amplexopora, Monotrypella, Petalotrypa, etc. ; but I cannot 

 see any definite character whereby to separate from it the Jurassic 

 species of Ceriopora. 



CERIOPORA, Goldf., 1827. 



Diagnosis. Amplexoporidae with prismatic or subcylindrical 

 zooscia. Mesopores absent. Acanthopores probably absent. Walls 

 of zooecia thin. Diaphragms horizontal, numerous. Zoariuin 

 massive or branching. 



Type species. C. micropora, Goldf uss, 1827. 



1. Ceriopora globosa, Michelin, 1846. 



Ceriopora globosa, Michelin, 1846, Icon. Zooph. p. 246, pi. Mi. fig. 5. 



,, ,, M'Coy, 1848, JNew Mesoz. Had. : Ann. Mag. Nat. Hist. 



ser. 2, vol. ii. p. 418. 



,, ,, Bronn, 1848, Nomencl. p. 261. 



,, ,, Bronn, 1849, Enum. p. 143. 



,, ,, Buvignier, 1852, Stat. geol. dep. Meuse, p. 184. 



,, ,, Quenstedt, 1852, Handb. Petref. p. 641, pi. Ivi. fig. 43. 



,, ,, M'Coy, 1854, Contrib. Brit. Pal. p. 66. 



,, ,, Morris, 1854, Cat. Brit. Foss. ed. 2, p. 120. 



,, ,, Quenstedt, 1867, op. cit. ed. 2, p. 769, pi. Ixxiii. fig. 43. 



,, ,, "Waagen, 1868, Zone Amm. sowerbyi: Geogn. Pal. JBeitr. 



Bd. i. Ht. 3, pp. 534, 644. 



P 1 ,, cf. ,, Brauns, 1874, Ob. Jura im nordwest. et Deutsch. p. 95. 

 ? ! ,, ,, Struckmann, 1878, Ob. Jura Umgegend Hannover, pp. 26-7. 



,, ,, Quenstedt, 1885, op. cit. ed. 3, p. 989, pi. Ixxix. fig. 60. 



,, Schlippe, 1888, Fauna Bath, oberrh. Tiefl. : Abh. geol. 



Specialk. Elsass-Loth. Bd. iv. livr. 4, p. 98. 



1 These references are probably based on Ceriopora t^lberosa, Quenst. 



