Columnogyra
Beauvais, 1976, p.18
Type Species
Acanthogyra multiformis Ogilvie, 1897, p. 132, pl. 16 fig. 1; Original Designation
Type Specimen: Lectotype; BSPG As III 76; Verified; Dry Preserved
Type Locality: Tithonian (Upper Jurassic)-Berriasian (Lower Cretaceous) from Štramberk (Czech Republic) (a part of the initial syntype came from Kotzebenz)
abusive designation of a holotype by Geyer 1955, the lectotype includes one partly polished dry specimen and one thin section.
Classification
Description
Massive cerio-meandroid corallum with "epitheca" s.l. Subpolygonal corallites more or less elongated, occasionally grouped in short series by intracalicular increase. One or two opposed septa grow in any direction and separate the parent corallite in two daughter corallites. Often, the separation is incomplete and produces series. Radial elements are compact free septa. Radial and bilateral symmetry. S1 very thick with T shaped inner edges. S2 thinner with claviform inner edge. S3 and S4 very short and occasionally lonsdaleioid. Rhipidogyrid septa . Wall having the same structure as major septa. Endotheca made of thin dissepiments in the peripheral region and scarcer tabuloid dissepiments in the central part. Small thin and wavy lamellar columella.
Distribution
- Central Europe; Late Jurassic - Early Cretaceous
- Western Europe; Late Jurassic
- Southern Europe; Late Jurassic
- Central Asia; Late Jurassic
This page has been in preparation since 07-May-2009 10:28
This version was contributed by Bernard Lathuilière on 27-Nov-2010 10:21.
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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