Opistophyllum
Ogilvie, 1897, p. 101
Possible synonym of Cheilosmilia
Type Species
Opisthophyllum zitteli Ogilvie 1897, p. 102, pl. 12 fig. 11; Subsequent Designation Wells 1936 p. 122
Type Specimen: Lectotype; BSPG As.III.34; Verified; Dry Preserved
Type Locality: Tithonian (Upper Jurassic)-Berriasian (Lower Cretaceous) from Štramberk (Czech Republic)
lectotype designated in Geyer 1955 b. The lectotype is numbered AS III 34 figured in Beauvais 1976. A specimen numbered As III 36 is interpreted as sectioned from the same initial corallum (a crust of a probable Neuropora is visible on both sides of the cutting surface). This specimen was sawed for a thin section by L. Beauvais and figured as a "topotype" (Beauvais 1976, pl. 1 fig.2 and pl. 3 fig. 4b). A third specimen (in two pieces and 2 thin sections) is numbered As III 35 and is figured by Beauvais in pl.3 fig.4 ; it was a part of the original Ogilvie's syntype and is either a part of the lectotype or more probably a paralectotype.
Classification
Description
Solitary corallum , outline elongate to reniform in transverse section. Finely striated epitheca with wavy growth rolls, covering costae. Radial elements compact free rather attenuated , straight or slightly curved, poorly ornamented. Strong bilateral symmetry with elongation of the corallite and of the fossa. The dorso-ventral plan could be perpendicular to the elongation of the fossa. Endotheca of large vesiculose dissepiments sloping down from the top of the wall to the fossa very steeply, even near the fossa, no columella, no synapticulae, wall in continuity with septa.
Remarks
Four nominal species in Jurassic. Another one cited in Aptian of China
Distribution
- Central Europe; Late Jurassic - Early Cretaceous
- Southern Europe; Late Jurassic
- East Asia; Early Cretaceous
This page has been in preparation since 19-Aug-2009 16:18
This version was contributed by Bernard Lathuilière on 14-Mar-2013 14:12.
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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