Isastraea prisca Weissermel, 1925:18, pl. 1, fig. 9.; Monotypy Morycowa, 1988:111
Type Specimen: Holotype; BGR X10132; Verified; Dry Preserved
Type Locality: Kamien Slaski ( Gross Stein) near Tarnow Opolski, Silesia. Lower Muschelkalk, Anisian, Middle Triassic
Topotypes from Kamien Slaski, Karchowice Beds: MB.K.338, UJ 34P51-56; other specimen from Stare Gliny, Diplopora Beds: UJ 34P/39, and others UJ 34/40,41.
Cerioid. Calices prismatic, deep, Isastrea-like or convex. Wall septothecal, straight or zigzag. Radial elements compact, subequal in thinckess. Distal border with fine denticles and rare, thick spine-like structures. Internal border wedge-like or thickened, or dissociated into lobes. Lateral faces with fine granules, in places joined to form flanges. Apophysal septa occur. Synapticulae rare. Endotheca made of sub-tabuloid dissepiments raising in the corallite periphery. Budding intracalicular, marginal, without connections between centers, frequently multiple. Traces of septal microstructure show thin centers in monolinear arrangement.
Described and illustrated in Morycowa 1988:114, text-fig.11; pl.10,fig.1,2. Additional analysis of morphology in Morycowa and Szulc 2006: fig.2A-E; fig.3A-D; fig.4A-F; fig.5A-C, and Morycowa et al. 2006: fig. 2A-B; fig.3A-G; fig.4A-H; fig.5A-D.
From other cerioid corals differs in septal microstructure and micromorphology, in large, tabuloid dissepiments and in multiple intracalicular mode of budding.
- Central Europe; Middle Triassic
This page has been in preparation since 06-May-2009 19:32
This version was contributed by Ewa Roniewicz on 09-Nov-2010 19:32.
Page authors are: Ann Budd Francesca Benzoni. Please contact the editor if you would like to contribute to the diagnosis of this taxon.
The editor is: Ewa Roniewicz