Actinacididae

Vaughan and Wells, 1943

Diagnosis

Colonial; colony formation by intra- and extratentacular budding. Basal epitheca present. Corallites synapticulothecate. Septa relatively few, composed of one system of 3 to 5 nearly vertical simple trabeculae, with numerous pores, laterally united by simple synapticulae, the innermost trabeculae often differentiated as paliform lobes. Septocostae often scarcely distinguishable, even absent when the distal ends of the septa bifurcate and become lost in a coenenchyme composed of discontinuous vertical trabeculae united horizontally by simple synapticulae; coenenchyme spinose or vermiculate on the surface. Columella absent or composed of one or more trabecular pillars. Endotheca thin, subtabulate.

Contains

• Actinacis Orbigny, 1849, p. 11
• Actinaraea Orbigny, 1849: 11
• Actinaraeopsis Roniewicz, 1968:306
• Actinhelia Orbigny, 1850, vol. 2, p. 278
• Dactylaraea D'Orbigny, 1849, p.11

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