Octocoenia
Orbigny, 1850, p. 222
Octocoenia Orbigny, 1850, p. 222 is a junior synonym (available and invalid), see Pseudocoenia Orbigny, 1850, p. 33.
Type Species
Octocoenia lugdunensis d'Orbigny 1850, p. 222; Monotypy
Type Specimen: Lectotype; MNHN B09537; Verified; Dry Preserved
Type Locality: Saint Fortunat (a hamlet localized at Limonest, near Lyon, France) Sinemurian sensu d’Orbigny (probably Hettangian).
The lectotype was designated (CINZ art.74.5 : designation of a lectotype before 2000) and figured by Thévenin (A.) in Cottreau, 1907 p. 35 pl. 10 fig. 23-24. A thin section is available.
Classification
Description
Massive plocoid corallum. Costate peritheca with confluent costae. Wall in relief, calicular platform steeply sloping down (subvertical) on the inner side of the wall. Circular corallites. Holotheca not observed. Radial elements are compact straight free costosepta, septal part attenuated. Regular teeth on inner edge of septa. Octameral symmetry Elliptical calicular pit. Dissepiments in peritheca are observed in longitudinal section. Endotheca not observed. Paraseptothecal wall.
This page has been in preparation since 21-Aug-2009 13:45
This version was contributed by Bernard Lathuilière on 23-Nov-2013 09:59.
Page authors are: Bernard Lathuilière Shaahin Zaman. Please contact the editor if you would like to contribute to the diagnosis of this taxon.
The editor is: Bernard Lathuilière
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