Misistella
Eliášová, 1976, p. 343
Type Species
Misistella amabilis Eliášová, 1976, p. 344, pl. 7 fig. 1, 2; pl. 8 fig. 1, text-fig.1; Original Designation
Type Specimen: Holotype; ÚÚG HF 327; Verified; Unknown
Type Locality: Tithonian (Upper Jurassic) to Berriasian (Lower Cretaceous) interval from Štramberk (Czech Republic)
The holotype is a colony with two thin sections n°12934/I I and 13947/I I
Classification
Description
Dendroid-phaceloid corallum. Intracalicular increase with trabecular linkage or with symmetrical division (fissiparous). Radial elements are thin compact costosepta, free or rarely anastomosed in the center, straight, to slightly curved, in zigzag in their thinnest part, bicuneiform, unequal. Lateral faces with acute granules. Inner edge of major septa produce a weak thin parietal columella, sublamellar to thin lamellar. No palis. Microstructure poorly known with simple and compound calcification centers irregularly arranged. Hexameral symmetry difficult to decipher, bilateral symmetry more or less marked by the curvature of septa and the elongated fossa according to the gemmation process. Endotheca made of numerous vesiculose dissepiments. No synapticula. Wall, imprecise in nature, incomplete and made partly by enlargement of septa, partly by dissepiments, costae are covered by an epitheca s.l. of exothecal origin.
Comparisons
Differs from Triassic Retiophyllia by the parietal columella. From Calamophylliopsis it differs in the microstructure of the wall, which in the latter genus has a complex structure: septotheca made of thickened costal parts, completed by trabecular wall elements situated in the interseptal spaces ( Roniewicz 1976, pl. 18, figs 2a-b), and by epicostal dissepiments ( ibidem, pl.18, figs 1 and 5). Calamophylliopsis shows also detached trabeculae at the inner edge. Rhabdophyllia shows a papillose columella.
Remarks
Three species were described. A fourth one was doubtfully described from Upper Jurassic of Japan_in Beauvais (1984).
Distribution
- Central Europe, Southeast Asia; Late Jurassic - Early Cretaceous
This page has been in preparation since 19-Aug-2009 16:00
This version was contributed by Bernard Lathuilière on 14-Mar-2013 13:34.
Page authors are: Bernard Lathuilière Helena Eliášová Ewa Roniewicz. 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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