Stephanaxophyllia
Alloiteau, 1957, p. 73
Type Species
Stephanaxophyllia casterasi Alloiteau, 1957: 73; Original Designation Alloiteau, 1957: 73
Type Specimen: Holotype; ; Verified; Unknown
Type Locality: Upper Santonian of France (Les Corbieres, Aude).
The holotype of the type species is housed at MNHN (Paris) under R10967.
Classification
Diagnosis
Colonial, plocoid to subcerioid. Gemmation extracalicinal and intracalicinal. Costosepta compact, nonconfluent, dentate laterally. Columella variable, spongypapillose, or formed by fused segments, appearing lamellar. Pali present before S1 and S2. Wall septothecal and parathecal, synapticulothecal developments occasionally present. Endothecal dissepiments numerous, thin, vesicular. Exothecal dissepiments subtabulate.
Remarks
From the Upper Paleocene of Somalia (Lower part of Auradu Limestone) Gregory (1900) described three specimens as Columnastraea bicoronata, two of which are cataloged as syntypes (R.5033 and R.5035) at the British Museum of Natural History, London. Re-investigation of the type material by Baron-Szabo (2006) revealed that the two specimens belong to different taxonomic groups. The specimen R.5035 closely corresponds to the Upper Cretaceous taxon Stephanaxophyllia casterasi. The second specimen (R.5033) shows close affinities to the genus Agathiphyllia.
Distribution
- Western Europe; Late Cretaceous
- Central Asia; Late Cretaceous
Creatceous: UAE/Oman border region, France, Bulgaria, Austria, Spain; Paleocene: Somalia.This page has been in preparation since 02-Jun-2007 12:36
This version was contributed by Rosemarie Baron-Szabo on 10-Sep-2010 19:50.
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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