Pachysolenia cf. cylindrica Cuif, 1975

Roniewicz, Ewa, 2011, Early Norian (Triassic) corals from the Northern Calcareous Alps, Austria, and the intra-Norian faunal turnover, Acta Palaeontologica Polonica 56 (2), pp. 401-428 : 407-408

Pachysolenia cf. cylindrica Cuif, 1975

Fig. 2B .

2007 Pachysolenia cf. cylindrica Cuif, 1975 ; Roniewicz et al. 2007: pl. 5: 1.

Material.—A fragment of corallite in organodetrital limestone GBA 2007/152/3, with thin section.

doi:10.4202/app.2009.0092

Measurements (in mm):

d dl s Remarks 8×10 4× 5 8S 1+8S2+16S 3 adult

Remarks.—Multiseptal coral that may represent either an aberrant form of P. cylindrica or a separate multiseptal taxon.

Stratigraphic and geographic range.— Austria: Northern Calcareous Alps, Dachstein Plateau, 50 m north of Feisterscharte, lower Norian, Epigondolella quadrata Conodont Zone.

Figures

Fig. 2. Hexanthiniarian corals from vicinity of Feisterscharte, Austria, early Norian, Triassic. A. Pachysolenia cylindrica Cuif, 1975; GBA 2007/152/1. A fragment of phaceloid corallum in upper view (A1); transverse section (A2); a corallite with septa thickened by a cover of fine crystals (A3); a tube−like, distal part of the calice with a thick pachythecal wall (A4); a magnified fragment showing modular structure of the pachythecal wall with internal wall surface longitudinally sculptured with minute ridges at left (A5); a corallite in longitudinal section showing a thick wall and thin, rare tabulae (A6). B. Pachysolenia cf. cylindrica Cuif, 1975; GBA 2007/152/3. Transverse section of the corallite with abundant septa. C, D. Pachydendron microthallos Cuif, 1975. C. GBA 2007/152/2. Corallum in transverse section (C1); corallite with rare tabulae in longitudinal section (C2); and a corallite (C3) with traces of microstructure in the wall with lumen filled by coarse calcite crystals. D. GBA 2009/019/3. Corallite with recrystallised wall, transverse section. E. Indetermined solitary hexanthiniarian coral?; GBA 2009/019/12. Thick−walled pachythecal−like coral in transverse section (E1), and its fragment (E2) showing septa with sharp ornamentation.