Siderocoenia
Beauvais, 1982, vol. 2, p. 218
Type Species
Thamnarea lithodes Felix, p. 182, pl. 23, fig. 6; Original Designation Beauvais, 1982, vol. 2, p. 218
Type Specimen: Syntype; ; Not Traced; Unknown
Type Locality: Upper Santonian of Austria (Gosau Group at Brunstloch).
The syntypes of the type species are housed at NHMW (Vienns) under 1864/0040/1399.
Classification
Diagnosis
Like Pironastrea d'Archiardi but differs from it by also showing extracalicinal budding and a wall-type that can be more solid than in Pironastrea.
Remarks
Beauvais (1982, vol. 2, p. 219-220), created the genus Siderocoenia. According to him, it is characterized by subthamnasterioid polyp integration; intracalicinal budding; subcompact and subconfluent to confluent costo-septa; abundant synapticulae; thin dissepiments; weakly developed parietal columella; synpaticulo-septothecal wall which occurs deeper in the corallum; and septa that consist of simple and compound trabeculae. However, in addition to these features, the holotype of the type species (Thamnaraea lithodes Felix) shows both corallites that are also arranged in short meandroid series which generally form tholifom collines and corallites that were formed extracalicinal. Considering all these features, the genus Siderocoenia closely corresponds to the genus Pironastrea d'Archiardi, 1875, but differs from the latter by also showing extracalicinal budding and a wall-type that can be more solid than in Pironastrea d'Archiardi. Therefore, the genus Siderocoenia is placed as a subgenus of Pironastrea d'Archiardi.
Distribution
- Central Europe; Late Cretaceous
This page has been in preparation since 09-Sep-2010 19:43
This version was contributed by Rosemarie Baron-Szabo on 05-Apr-2011 14:56.
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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