Phacelophyllia
Beauvais 1986, p. 38
Type Species
Phacelophyllia termieri Beauvais 1986 p. 39 pl. 7 fig. 2 and text fig. 27; Original Designation
Type Specimen: Holotype; MNHN R11621; Verified; Dry Preserved
Type Locality: Lower Jurassic of an unknown locality of Morocco
The holotype is a sectioned specimen with the corresponding transverse thin section. L. Beauvais evoked a polished transverse section in her original text. It has not been found.
Classification
Description
Phaceloid corallum. Calices subcircular to subpolygonal in outline. Epitheca s.l. present, costae absent. Mode of increase unknown. Radial elements probably subcompact, anastomosed, with rather parallel lateral faces (but small septa attenuated), rather straight unequal in length and thickness. Distal edge not observed, inner edge with detached trabecules, lateral faces probably pennular. Hexameral symmetry probable with anastomoses according to cycles (but only one calice deciphered), bilateral symmetry not observed. Endotheca not observed. Center of the corallite filled with detached trabeculae of S1-S2 septa, synapticule present, wall present at the periphery of the calyx, of an unknown nature.
Comparisons
Phacelophyllia differs from Thecactinastraea by its anastomosing septa.
Remarks
L. Beauvais (1986) described the mode of budding as intracalicular marginal. I cannot confirm or invalidate this observation. Three nominal species known in Jurassic
Distribution
- Southern Europe; Early Jurassic
- North Africa; Early Jurassic
This page has been in preparation since 19-Aug-2009 16:49
This version was contributed by Bernard Lathuilière on 02-Nov-2012 09:53.
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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