Dichotomosmilia
Beauvais, 1967, p. 29
Type Species
Dichotomosmilia ranvilllensis Beauvais 1967, p. 30 pl. 3 fig. 3; Original Designation
Type Specimen: Holotype; MNHN A24819; Verified; Dry Preserved
Type Locality: Bathonian from Ranville (Calvados, France)
The paratype R 54648 is probably a Euhelia gemmata
Classification
Description
Of the holotype….Dendroid corallum with an intracalicular septal increase producing a dichotomous branching in which branches are in a single plan. The corallum was epithecate but the colony was rolled in the oolitic depositional environment. Costae are probably originally absent. Calices infundibuliform. Radial elements are compact, attenuated, sinuous septa arranged in six systems well visible because S3 are anastomosed to S2 in a contratingent manner. Columella difficult to establish clearly because dorso-ventral S1 share all the visible calices in two parts. Endotheca not observed. No synapticule. Wall present, nature unknown.
Comparisons
The genus is very close of a young Cladophyllia. The dichotomous branching in a single plan could be a differentiating character but presently only one specimen is known.
Distribution
- Western Europe; Middle Jurassic
This page has been in preparation since 18-Aug-2009 16:29
This version was contributed by Bernard Lathuilière on 08-Mar-2014 10:53.
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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