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Rhaetiastraea

Roniewicz, 1974: 112

Type Species

Rhaetiastraea tatrica Roniewicz, 1974: 113, pl.9, fig. 1-3, text-fig. 12.; Monotypy Roniewicz, 1974: 113

Type Specimen: Holotype; ZPAL H.VI/12; Verified; Dry Preserved

Type Locality: Pass in the Kulawiec Hill, ChochoĊ‚owska Valley, Western Tatra Mountains. Rhaetian, Late Triassic

Classification

Diagnosis

Cerioid. Radial elements lamellar and compact with the exception of the inner margin. Septal faces with fine granulations. Columella papillar. Endotheca composed of subhorizontal elements. Wall septothecal. Synapticulae? in the wall. Increase intracalicular without connections between the centers.

Comparisons

In cerioid colony composed of corallites of a few milimeters in diameter and thin septa with lateral granulation, the genus resembles Toechastraea Volz,1896, from which it differs in septal microstructure (trabeculae with sharp granules) and in a papillar, not styliform columella. In macro- and micromorphological features it is close to corals from the Lower Jurassic of Morocco described by Beauvais 1986 as Isastrocoenia? Gregory and Trigerastraea? Alloiteiteau.

Remarks

The genus is known from the limestones of the Tatric Superunit, in the association of corals including taxa related to Early Jurassic ones from the West Europe.

Distribution

  • Western Europe;
  • Central Europe;
  • North Africa; Early Jurassic

This page has been in preparation since 17-Apr-2009 14:16

This version was contributed by Ewa Roniewicz on 10-Nov-2010 18:40.

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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