Rhipidastraeidae
Eliášová, 1991
Diagnosis
Radial elements are anastomosing septa (?) with irregular and sparse pores. The internal edge shows lobes protruding in the axial cavity which build a parietal columella. Lateral faces displays pointed granules whose organisation is badly known. Septal radial symmetry disturbed by increase and difficult to decipher in term of hexameral symmetry. Bilateral symmetry observed through torsion of septa. Zigzag septothecal or parathecal wall. Endotheca made of vesicular dissepiments. Synapticules present. Microstructure made of neorhipidacanth trabecules ?
Contains
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: Bernard Lathuilière. 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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