Polypora sinokoninckiana Yang & Lu 1962
| Main Authors: | Ernst, Andrej, Senowbari-Daryan, Baba, Hamedani, Ali |
|---|---|
| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2006
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/4665017 |
Daftar Isi:
- Polypora sinokoninckiana Yang & Lu, 1962 (Figs 10P; 11 A-D; Table 27) Polypora sinokoninckiana Yang & Lu, 1962: 93, pl. 17, figs 10-12. MATERIAL EXAMINED. — 1-3-4, 9-5-4, 9-5-8, 9-7. OCCURRENCE. — Southern China; Maokao Formation, Permian (?Murgabian) (Yang & Lu 1980). Lakaftari: central Iran, Jamal Formation, Middle Permian. DESCRIPTION Micrometric formula: 8-11.5/5-7//16-22. Reticulated colonies with straight branches, joined by relatively thin dissepiments. Autozooecia arranged in 3-4 alternating rows on branches. Apertures circular, spaced 5-6 per length of a fenestrule; 1-2 small nodes developed in peristome. Shape of fenestrules varying from narrow oval to rectangular and triangular. Keels absent. Nodes small, rounded, hyaline, arranged in regular rows between apertures on the obverse colony surface, widely spaced. Internal granular skeleton moderately thick, well developed, continuous with nodes, rods, peristome and across dissepiments. Outer lamellar skeleton moderately thick, containing abundant rods 5-6 μm in diameter. Ovicells occurring occasionally, shaped as spherical chambers attached at distal part of apertures, reaching 0.14 mm in diameter. INTERIOR DESCRIPTION Autozooecia rhombic to hexagonal in the middle tangential section; relatively short in longitudinal section, with well developed vestibule; aperture positioned at distal to distal-abaxial end of chamber. Hemisepta absent. Terminal diaphragms occurring. COMPARISON Polypora sinokoninckiana is similar to P. timorensis Bassler, 1929 from the Permian of Indonesia. The latter species differs in having longer fenestrules (c. 2 vs. 0.99-1.47 mm in present material), and thinner branches (c. 0.45 vs. 0.60 mm in present material).
- Published as part of Ernst, Andrej, Senowbari-Daryan, Baba & Hamedani, Ali, 2006, Middle Permian Bryozoa from the Lakaftari area, northeast of Esfahan (central Iran), pp. 543-590 in Geodiversitas 28 (4) on pages 570-572, DOI: 10.5281/zenodo.4665450