Pleurostylina
Fromentel 1861, p. 204
Probably a junior synonym of Amphiastrea
Type Species
Pleurostylina corallina Fromentel 1861, p. 204; Subsequent Designation Wells, 1936, p. 125
Type Specimen: Lectotype; MNHN F. M03902; Verified; Dry Preserved
Type Locality: Oxfordian (Upper Jurassic) Ecuelle (Haute Saône; France)
The lectotype designated by Lathuilière Charbonnier and Pacaud (2017) is a dry specimen not sectioned. Beauvais (1964) discarded the Fromentel’s syntype to use a better preserved sample as the specimen of reference. This is nomenclaturally not correct. Both samples correspond to Pleurostylina and the Beauvais’ topotype with its thin sections was used also in this description.
Classification
Synonyms
Description
Massive cerioid corallum with polygonal corallites. Increase by Taschenknospung possible but not well demonstrated. Radial elements compact, free, attenuated curved to sinuous. Distal edge, inner edge and lateral faces smooth. No pali. Bilateral symmetry strongly marked by the columellar septum and the curvature of septa. Two zoned endotheca with large vesicles in the marginarium and tabuloid dissepiments or tabulae in the inner part of calices. No columella, no synapticulae, pachythecal wall with a characteristic dark line in the middle.
Comparisons
See Amphiastrea , Amphiaulastrea and Thecidiosmilia
Remarks
Two Jurassic and two Cretaceous nominal species. See Eliasova 1975, p. 9 pl. 3 fig. 1-2 text.fig. 3 for a description of the type-species.
Distribution
- Western Europe, Central Europe, Central Asia, Central America; Late Jurassic - Early Cretaceous
This page has been in preparation since 15-Jul-2010 17:41
This version was contributed by Bernard Lathuilière on 21-Jul-2017 15:24.
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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