Eugyra
de Fromentel, 1857, p. 30
Type Species
Meandrina cottaldina d’Orbigny, 1850, vol. 2, p. 94; Subsequent Designation Gregory, 1930, p. 201
Type Specimen: Holotype; ; Not Traced; Unknown
Type Locality: Lower Hauterivian of France (Fontenoy, Yonne).
Classification
Synonyms
Diagnosis
Colonial. massive, meandroid. Gemmation intracalicinal. Individual corallites generally indistinct. Isolated corallites occasionally present. Collines generally tholiform. Calicinal series often ramified. Ambulacra present occasionally. Costosepta compact, nonconfluent or subconfluent. Columella trabecular, rudimentary or absent. Long, tabulate endothecal dissepiments abundant. Short, vesicular dissepiments occur in the vicinity of the septothecal to septoparathecal wall. Trabeculae simple and branching, 35–150 µm in size.
Remarks
The type material has been lost, but Morycowa (1997) provided an extended description of Eugyra and discussions on its systematic position based on original material found in the de Fromentel collection housed at the MNHN (Paris).
Distribution
- Southern Europe; Late Jurassic
- Western Europe; Early Cretaceous
- Southern Europe; Early Cretaceous
- Central Europe; Early Cretaceous
- Eastern Europe; Early Cretaceous
- Central Asia; Early Cretaceous
- East Asia; Early Cretaceous
- Central America; Early Cretaceous
Jurassic-Late Cretaceous of the Middle East.Contains
This page has been in preparation since 18-Jun-2010 15:18
This version was contributed by Rosemarie Baron-Szabo on 05-Jan-2016 18:32.
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
|