Felix, 1900, p. 2

Type Species

Gyrosmilia edwardsi Reuss, 1854: 92; Original Designation Felix, 1900: 2

Type Specimen: Holotype; ; Verified; Unknown

Type Locality: Santonian of Austria (Gosau Group).

The holotype of the type species is housed at GBA under 1854/007/0030.



Colonial, massive, meandroid. Gemmation intracalicinal. Calicinal series forked, generally united by peritheca or exotheca. Ambulacrae present, narrow. Costosepta compact, non-confluent, covered by various types of granules such as spiniform, rounded, and paddle-shaped. Columella lamellar, discontinuous. Endothecal dissepiments abundant. No synapticulae. Wall parathecal to septoparathecal.


having thick, compact costosepta and a well-developed exothecal wall, the material figured from the Aptian of Uzbekistan as Astrogyra edwardsi (Reuss, 1854) in Kuzmicheva (1982) rather corresponds to the genus Stiboriopsis Vaughan, 1899.


Based on the presence of a parathecal to septoparathecal wall, a well-developed endotheca made of vesicular to subtabulate dissepiments, and septal flanks that have paddle-shaped granules (see Baron-Szabo, 2014, l. 16, fig. 2), the genus Astrogyra is grouped with family Mussidae.


  • South Asia; Early Cretaceous
  • Southern Europe; Late Cretaceous
  • Central Europe; Late Cretaceous
  • Eastern Europe; Late Cretaceous
  • Central Asia; Late Cretaceous
  • South Asia; Late Cretaceous

This page has been in preparation since 02-Jun-2007 12:35

This version was contributed by Rosemarie Baron-Szabo on 05-Nov-2016 15:36.

Page authors are: Rosemarie Baron-Szabo. Please contact the editor if you would like to contribute to the diagnosis of this taxon.

The editor is: Rosemarie Baron-Szabo

Astrogyra edwardsi (Reuss, 1854)