Placocoeniidae

Alloiteau, 1952

Diagnosis

Colonial, massive, polyps large, separated by a non-vesicular and costulated surface; wall septothecal, often thick; costosepta exsert, their distal margins are covered by granules; granules on septal flanks are sparse; no synapticulae; columella lamellar; trabeculae simple, arranged in divergent bundles; sclerodermites large, aligned in a median line in the septa. and ????? (the complete sentence is "...sclerodermites assez gros, disposes sur une seule ligne mediane dans la region interne des septes, sur deux ou trois rangs dans la partie mediane et externe;...")... large and well-separated fibrose structures around the calcification centers

Contains

• Astrogyropsis Reig Oriol, 1995, p. 18
• Taxogyra Wells, 1937 (pro Heterophyllia d'Orbigny, 1850 non McCoy, 1849)
• Placocaeniopsis Alloiteau, 1952, p. 641
• Heterophyllia Orbigny, 1850, p. 208
• Astrogyra Felix, 1900, p. 2
• Columnocoenia Alloiteau, 1952
• Columnacaeniopsis Reig Oriol, 1989, p. 29
• Placocoenia Orbigny, 1849
• Parastephanocora Reig Oriol, 1992, p. 46
• Paraplacocoenia Beauvais, 1982

This page has been in preparation since 02-Oct-2009 17:15

This version was contributed by Ken Johnson on 02-Oct-2009 17:15.

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