Lakkella jamalica, Ernst & Senowbari-Daryan & Hamedani, 2006

Ernst, Andrej, Senowbari-Daryan, Baba & Hamedani, Ali, 2006, Middle Permian Bryozoa from the Lakaftari area, northeast of Esfahan (central Iran), Geodiversitas 28 (4), pp. 543-590 : 574

Lakkella jamalica n. sp. ( Figs 11 L-P; 12; Table 30)

HOLOTYPE. — SMF 2115 (1-2-1).

ETYMOLOGY. — The species name refers to the Jamal Formation in which it was found.

PARATYPES. — 1-8-2, PL 5.

TYPE LOCALITY. — Lakaftari, central Iran.

TYPE LEVEL. — Jamal Formation, Middle Permian.

ADDITIONAL MATERIAL EXAMINED. — 9-5-9.

DIAGNOSIS. — As for genus.

DESCRIPTION

Branched colony with 4-6 rows of short tubular autozooecia opening on the one side, 0.66-0.75 mm wide. Autozooecia elongated oval to slightly rectangular in deep tangential section having well developed vestibule. Autozooecial apertures oval to lens-shaped, spaced 5 at distance of 2 mm. Thin ridges between apertures separating drop-shaped areas around apertures. Small pit-like heterozooecium (leptozooecium) positioned at distal part of such an area, triangular to rounded in cross section, 0.06- 0.075 mm in diameter. Single small acanthostyle in the wall between the heterozooecium and the adjacent aperture; rare smaller styles irregularly spaced between apertures. Inner granular skeleton hyaline, well developed; outer lamellar skeleton relatively thick.

COMPARISON

As for genus.

Figures

FIG. 11. — A-D, Polypora sinokoninckiana Yang & Lu, 1962; A, 1-3-4, tangential section, showing apertures with nodes and nodes on colony surface; B, 9-5-4, tangential section of the branch; C, 9-5-4, deep tangential section of the branch; D, 9-5-4, cross section of the branch; E-G, Polypora principalis Gorjunova, 1975; E, 4-3, tangential section; F, 4-3, deep tangential section of the branch; G, 4-3, tangential section showing autozooecial apertures; H, I, Polyporella sp., 4-12, tangential section; J, K, Q, Fenestrida indet.; J, Q, 10-1-2, tangential section; K, 10-1-2, deep tangential section; L-P, Lakkela jamalica n. gen., n. sp.; L, SMF 2115, holotype, tangential section;M, SMF 2115,holotype,tangential section showing apertures and acanthostyles;N, 1-8-2, paratype,deep tangential section; O, 9-5-9, tangential section showing apertures and heterozooecia; P, SMF 2115, holotype, longitudinal section. Scale bars: A, G, M, O, 0.2 mm; B, C, F, I, L, 0.5 mm; D, J, K, N, P, 0.25 mm; E, H, 2 mm; Q, 1 mm.