Alloiteau, 1952

Type Species

Centrastraea collinaria d'Orbigny, 1850: 93.; Original Designation d'Orbigny, 1850: 93.

Type Specimen: Holotype; ; Not Traced; Unknown

Type Locality: Lower Hauterivian of France (Yonne).

The holotype of the type species is housed at MNHN (Paris) under 5292.



Colonial, massive, thamnasterioid. Gemmation intracalicinal. Septa compact, confluent, granulated marginally and laterally. Septa thickened by development of irregular multiple series of large trabeculae. Columella styliform. Synapticulae present. Endothecal dissepiments sparse. No wall between the corallites.


Similar to Thamnasteria but septa thickened by irregular multiple series of large trabeculae. By its macromorphological appearance, the genus Stereocoenia Alloiteau closely resembles the genus Paretallonia Sikharulidze. However, differences exist in the occurrence of confluent to nonconfluent septa, a well developed endotheca, and the presence of a synapticulothecal wall in the latter.

This page has been in preparation since 02-Jun-2007 12:36

This version was contributed by Rosemarie Baron-Szabo on 10-Sep-2010 20:35.

Page authors are: Rosemarie Baron-Szabo. Please contact the editor if you would like to contribute to the diagnosis of this taxon.

The editor is: Rosemarie Baron-Szabo

Stereocoenia collinaria (d'Orbigny, 1850), holotype