Eliášová, 1976, p.360

The genus was placed with a question mark in the Amphiastreidae by Stolarski and Russo (2001) and in a “incertae family” by Kolodziej (2003)

Type Species

Simplexastraea archaea Eliášová, 1976, p. 360, pl. 3 fig. 3-4, text-fig.2, 5-7; Original Designation

Type Specimen: Holotype; ÚÚG HF 120; Verified; Dry Preserved

Type Locality: Tithonian (Upper Jurassic)-Berriasian (Lower Cretaceous) from Štramberk (Czech Republic)

The holotype is a corallum with two thin sections n°26577/II, 26578/II. A paratype HF580 with its thin sections 26579/II and 26580/II exists



Phaceloid corallum with corallites oval in section. Increase intramural, fissiparous , generally, at the ends of the longer axis. Radial elements are compact septa s.s., mostly attenuated, the cardinal septum the longest of all and the remaining septa differentiated in length in two size orders. No pali. Microstructure unknown. Bilateral symmetry marked all along the growth. No columella. Endotheca made of tabulae. No synapticulae. Pachythecal wall


Simplexastraea is distinguished from Carolastraea mainly by the structure of the wall (double layer with invaginations in the latter)


Only one nominal species described up to now. The assignation of the ? Carolastraea of Melnikova et Roniewicz 1976 from the Callovian of Pamir to Simplexastraea is still doubtful


  • Central Europe; Late Jurassic - Early Cretaceous
Callovian of Pamir is also possible (? Carolastraea of Melnikova and Roniewicz 1976)

This page has been in preparation since 20-Aug-2009 07:42

This version was contributed by Bernard Lathuilière on 02-Jun-2011 10:00.

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

Simplexastrea archaea
Simplexastrea archaea