Roniewicz, 1989: 98

Type Species

Parastraeomorpha minuscula Roniewicz, 1989:98; Original Designation Roniewicz, 1989:98

Type Specimen: Holotype; NHMW 1982/57/17; Verified; Dry Preserved

Type Locality: Northern Calcareous Alps, Fischerwiese. Zlambach Beds, Rhaetian, Late Triassic.

In the NHMW collection, beside the holotype, specimens from Fischerwiese and from Sommeraukogel are present.



Thamnasterioid. Septa laminar, thin-trabecular. Columella styliform. Septal faces smooth or with rudimentary pennular expansions. Synapticulae large, independent of other structures. Dissepiments thin, rare.


Described and figured, with microstructural details, in Roniewicz, 1989:98, pl.30, fig. 1, 2.


Parastraeomorpha, in general morphology similar to Astraeomorpha Reuss, differs from it in a lack of menianes and in development of synapticulae dominating over other horizontal skeletal structures.


Two species are known.


  • Southern Europe; Late Triassic
  • Eastern Europe; Late Triassic
  • Central Asia; Late Triassic
  • North America; Late Triassic
  • Central America; Late Triassic
Alpine region, SE Pamirs, NW Caucasus: Rhaetian. Peru: Norian. North America: Norian-Rhaetian.

This page has been in preparation since 22-Mar-2009 13:40

This version was contributed by Ewa Roniewicz on 06-Nov-2010 17:17.

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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