Cuif, 1975: 169
classified by Cuif 1975 in the family Pachythecalidae, junior synonym of Zardinophyllidae Montanaro-Gallitelli, 1975
Pachydendron micothallos Cuif 1975 Cuif 1975:169, text-figs 5-7, pl. 14: 1, 2; Monotypy Cuif 1975:169
Type Specimen: Holotype; MNHN ; Not Traced; Dry Preserved
Type Locality: Alakir Cay ( Taurus Mts), Anatolia, Turkey. Stikinoceras kerri zone, Early Norian, Late Triassic
type material preserved in aragonite.
Phaceloid coralla with irregularly oriented corallites of small diameters; increase lateral, producing from one to multiple descendant calices; corallites small, cylindrical; septal apparatus composed of 12 septa, symmetry bilateral underlined by elongated one, or two opposite septa; endotheca composed of rare, tabular elements; wall thick made of centripetally growing fibres organized into modules in the form of fascicles provided with axis.
Pachydendron differs from another phaceloid genus of the same family, Pachysolenia Cuif, in much smaller corallite diameters, and a very simple septal apparatus with bilateral symmetry
The genus was monographed by Cuif 1975 based on the material preserved in excellent state in aragonite. New findings are from the Lower Norian of the Central Asia, from the Pamirs (Melnikova 2001:37, pl.6, fig.3,4), and from the Alps, from the Dachsteinplateau (Roniewicz 2010: fig.2H-K).
The genus is know exclusively from the Early Norian, from Southern Europe, and Central and West Asia(Turkey).
- Southern Europe; Late Triassic
- Central Asia; Late Triassic
This page has been in preparation since 17-Oct-2010 13:38
This version was contributed by Ewa Roniewicz on 06-Nov-2010 14:37.
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