Fistulipora enodata Gorjunova, 1970

Ernst, Andrej, 2016, Bryozoan fauna from the Permian (Artinskian-Kungurian) Zhongba Formation of southwestern Tibet, Palaeontologia Electronica (1946) 51 (9), pp. 1-59 : 3-6

Fistulipora enodata Gorjunova, 1970

Figure 3.1-4 ; Table 1

1970 Fistulipora enodata Gorjunova , p. 61, pl. 21, fig. 4.

1975 Fistulipora enodata Gorjunova, 1970 ; Gorjunova, p. 42, pl. 1, fig. 1.

1987 Fistulipora enodata Gorjunova, 1970 ; Liu and Wang, p. 4, pl. 1, figs. 4a-b, pl. 2, figs. 1-a-b.

1991 Fistulipora enodata Gorjunova, 1970 ; Xia, p. 957, pl. 5, figs. 13-14.

Material. SMF 23.007– SMF 23.021.

Description. Encrusting, partly multilayered colony, separate sheets 1.8–2.8 mm thick. Autozooecia growing from thin epitheca, bending at their bases to the colony surface. Autozooecial diaphragms rare to absent, thin. Autozooecial apertures circular to oval. Lunaria well-developed, rounded, disappearing in deeper sections; ends of lunaria not indenting into autozooecia. Vesicles small to medium, high, separating autozooecia in TABLE 2

1–2 rows, 11–15 surrounding each autozooecia aperture, with rounded to flat roofs, polygonal in tangential section. Autozooecial walls granular prismatic, 0.005 –0.015 mm thick. Maculae not observed.

Remarks. Fistulipora enodata Gorjunova, 1970 differs from F. timorensis Bassler, 1929 in larger autozooecial apertures (aperture width 0.24–0.38 mm vs. 0.22–0.28 mm in F. timorensis ).

Occurrence. Lower Permian, Artinskian; Tajikistan (Pamir). Lower Permian; Rutog, southwestern Tibet. Xiala Formation,?Middle Permian; Xainza, southwestern Tibet. Zhongba Formation, Permian (late Cisuralian–Guadalupian); Zhongba area of southwestern Tibet.

Figures

FIGURE 3. Thin section photographs of Fistulipora enodata Gorjunova, 1970, SMF 23.014 (1–4); Fistulipora guttata Trizna and Klautzan, 1961, SMF 23.025 (5–8); and Fistulipora sakagamii n. sp., holotype SMF 23.028 (9 and 10). 1 and 5, longitudinal section showing autozooecial chambers and vesicular skeleton; and 2–4, 6–8, 9, and 10, tangential sections showing autozooecial apertures and vesicles.

FIGURE 4. Thin section photographs of Fistulipora sakagamii n. sp., holotype SMF 23.028 (1 and 2); Dybowskiella hupehensiformis n. sp., holotype SMF 23.030 and paratype SMF 23.032 (3–7); and Fistuliramus xianzaensis Liu and Wang, 1987, SMF 23.037 (8). 1, 2, 5–7, tangential section showing autozooecial apertures and vesicles; 3 and 4, longitudinal section showing autozooecial chambers and vesicular skeleton; and 8, branch transverse section.