Eridopora oculata Bassler, 1929

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 : 549

Eridopora oculata Bassler, 1929 ( Fig. 3 N-P; Table 4)

Eridopora oculata Bassler, 1929: 53 , 54, pl. 1, figs 5- 11. — Kiseleva 1982: 59, pl. 3, fig. 2.

Eridopora sp. cf. oculata – Sakagami 2000: 147, fig. 4-3.

MATERIAL EXAMINED. — 1-2-3, 1-2-4, 1-2-5, 5-11, 11-1-1, 16-1-6, 16-1-7, 19-4-11, 23-2-1, 23-4-1, 23-7, 23-8-2, 24-3-5.

OCCURRENCE. — Timor: Indonesia, Permian ( Bassler 1929; Sakagami 2000). Lakaftari: central Iran, Jamal Formation, Middle Permian. Khabarovsk region: Russia; Middle Permian, Kazanian ( Kiseleva 1982).

DESCRIPTION

Small encrusting colonies, 0.66-1.35 mm thick. Autozooecial apertures rounded to oval, with well developed triangular lunaria, spaced 4-5 in 2 mm at colony surface. Lunaria large, prominent, 0.06- 0.07 mm thick in their middle part, sometimes containing 1-4 nodes. Autozooecial diaphragms rare to abundant, planar, thin. Vesicles angular, separating autozooecia in 1-2 rows, spaced 10-15 in 1 mm of longitudinal section. Distinct polygons developed by keels on the colony surface, enclosing apertures.

COMPARISON

Eridopora oculata differs from the most similar species E. parasitica ( Waagen & Wentzel, 1886) [syn. E. major Bassler, 1929 ] from Salt Range ( Pakistan) by smaller apertures and thinner colony.

Figures

FIG. 3. — A-D, Ogbinopora orientalis Gorjunova, 1975; A, B, 5-6-3, longitudinal section (arrow in B: hemisepta); C, 5-9-3, cross section; D, 5-6, tangential section; E-I, Ascopora gracilis n. sp.; E, paratype 23-6-7, longitudinal section; F, 23-6-5, tangential section; G, 23-6-8, cross section; H, 23-6-7, longitudinal section; I, holotype SMF 2112, oblique tangential section (arrow: acanthostyle); J- M, Fistuliporidae indet. (?Eridopora); J, 4-8-11, tangential section; K, 19-4-10, longitudinal section showing hemisepta; L, 19-4-10, longitudinal section showing wall structure; M, 19-4-10, tangential section showing lunarium; N-P, Eridopora oculata Bassler, 1929; N, 11-1, tangential section; O, 16-1-7, tangential section showing hexagons around apertures; P, 16-1-7, longitudinal section. Scale bars: A, 1 mm; B, D, G, H, J, N-P, 0.5 mm; C, 2 mm; E, K, M, 0.1 mm; F, I, 0.25 mm; L, 0.05 mm.