Timanodictya sp.

Nakrem, Hans Arne, Błażejowski, Błażej & Gaździcki, Andrzej, 2009, Lower Permian bryozoans from southern and central Spitsbergen, Svalbard, Acta Palaeontologica Polonica 54 (4), pp. 677-698 : 692

Timanodictya sp.

Fig. 7G–H .

Material examined.—Treskelen, sample and one thin section ZPAL Br. 12/Cr. 64; Hyrnefjellet, sample and two thin sections ZPAL Br. 12/H10.

Remarks.—Fragments of Timanodictya colonies are observed in oblique orientations. The genus identification is based on the presence of a median lamina and the abundant small microstylets in the extrazooidal skeleton. Branch width is about 1 mm with slightly oval zooecial apertures 0.12 × 0.13 mm. Aperture center distance is about 0.29–0.31 mm along colony, 0.35–0.36 mm diagonally. These measurements are not sufficient for specific identifications.

Figures

Fig. 7. Lower Permian bryozoans from Hyrnefjellet, Svalbard. A–F. Ascopora birkenmajeri sp. nov. A. Transverse section showing completely regenerated growth (cylindrical self−encrustation). Sample H7, PMO 170.903A. B. Longitudinal section showing central canal with parallel zooecia. Regenerated growth. PMO 170.903H. C. Regenerated growth. Sample H7, PMO 170.903E. D. Sample H7, PMO 170.903C. Colony growth basis (D1) and colony growth basis displaying unusual thich endozonal walls (D2). E. Sample H7, PMO 170.903D. Regenerated growth. F. Tangential section showing zooecial apertures, large acanthostyles between apertures, and a row of small stylets bordering each aperture. Sample Br.12/G15, PMO 170.899. G, H. Timanodictya sp. G. Oblique tangential section. Sample H10, ZPAL thin section. H. Tangential section showing apertures, and scattered small (1) and large (2) tubercles on colony surface between apertures. Sample H10, ZPAL thin section. Scale bars 0.4 mm.