Kompsasteria
Roniewicz, 1989: 30
Type Species
Isastraea oligocystis Frech, 1890: 24, pl. 5, fig. 8-8B; Monotypy Roniewicz 1989:30
Type Specimen: Holotype; BSPG AS XII 17; Verified; Dry Preserved
Type Locality: Hammerkogel, Gosaukamm, Northern Calcareous Alps. Rhaetian, Late Triassic
Additional specimens from the Gosaukamm region: Schneckengraben, Riedelkar, Kesselwand-Rohrmoos are housed at the NHMW
Classification
Diagnosis
Cerioid, increasing through marginal intracalicular increase; wall bilaminar; septa of the highest order are dissociated into trabeculae; inner margin of other septa with trabecular projections, granules on lateral septal faces; endotheca of large subhorizontal elements. Microstructure: septal trabeculae subnormal to the wall; wall composed of fibres normal to the mural mid-line.
Description
Morphology and microstructure described and illustrated by Roniewicz, 1989:30, pl.2,fig.2,3; pl.3,fig.1-5.
Comparisons
In cerioid type of colony with double wall between the corallites divided by a fissure, the genus resembles Cerioheterastraea Cuif, 1976. They differ from each other in septal microstructure and type of increase: in the latter genus trabeculae are not identifiable and calices multiply by division with septal wall.
Remarks
Only one species is known.
Distribution
- Southern Europe; Late Triassic
Rhaetian, Northern Calcareous AlpsThis page has been in preparation since 22-Mar-2009 11:21
This version was contributed by Ewa Roniewicz on 08-Nov-2010 12:38.
Page authors are: Ewa Roniewicz. Please contact the editor if you would like to contribute to the diagnosis of this taxon.
The editor is: Ewa Roniewicz
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