Rhipidastraea
Eliasova, 1991, p. 169
Type Species
Rhipidastraea soukupi Eliášová, 1991a: 169, figures on pls 2, 4, and 6-8; Original Designation Eliášová, 1991a: 169
Type Specimen: Holotype; ; Verified; Unknown
Type Locality: Upper Cenomanian-Lower Turonian of the Czech Republic (Bohemia).
The holotype of the type species is ÚÚG HF 1.751 and the thin sections ÚÚG 88896/II, 88897/II, 97068–97070/I.
Classification
Diagnosis
Colonial, massive, cerioid, subplocoid, submeandroid. Budding intracalicular. Corallites isolated or arranged in short (of up to 4 corallites in type species) meandroid series with corallite centers that are distinct or subdistinct. Septa confluent to non-confluent, irregularly and sparsely perforated. Septa generally arranged bilaterally. Only in small-sized cerioid to subplocoid corallites (lumen of up to around 3 mm in diameter in type species), are septa sometimes more or less radially arranged. Septal flanks are covered by a large variety of granulae, generally ranging between 100–250 µm. Their shapes include spines, carinae-like structures, flat pennular-like forms, and rounded granulae. Lateral spines are isolated or arranged in small clusters, standing off in various directions Pali and paliform lobes irregularly present, appear to be absent in some small-sized corallites. Columella irregularly parietal, sublamellar, or made of twisted lamellar segments. Trabecular extensions of axial edges sometimes fuse with the columella. Endotheca made of thin, vesicular dissepiments. Synapticulae sparse. Wall is formed by a mix of synapticulae, and septal and dissepimental elements [“composite wall” sensu RONIEWICZ (1982) and LATHUILIÈRE (1988)], arranged in a zigzag pattern. Microstructure made of neorhipidacanth trabeculae.
Remarks
Material assigned to the genus Thalamocaeniopsis in FILKORN and PANTOJA-ALOR, 2009, p. 112-114, Figs. 42.1-6, from the upper Albian–lower Cenomanian of Mexico, is grouped with this genus.
Distribution
- Central America; Early Cretaceous
- Southern Europe; Late Cretaceous
- Eastern Europe; Late Cretaceous
- Central America; Late Cretaceous
Cretaceous: Czech Republic, Spain.This page has been in preparation since 02-Jun-2007 12:36
This version was contributed by Rosemarie Baron-Szabo on 22-Jun-2017 21:30.
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
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