Sinodisphyllum litvinovitshae ( Soshkina, 1949 )

Ma, Xue-Ping, Sun, Yuan-Lin, Hao, Wei-Cheng & Liao, Wei-Hua, 2002, Rugose corals and brachiopods across the Frasnian- Famennian boundary in central Hunan, South China, Acta Palaeontologica Polonica 47 (2), pp. 373-396 : 382

Sinodisphyllum litvinovitshae ( Soshkina, 1949)

Fig. 8J, K .

Campophyllum litvinovitshae sp. n.; Soshkina 1949: 86–88, pls. 38–39, pl. 40: 1–3.

Sinodisphyllum litvinovitshae ( Soshkina, 1949) ; Liao 1977: 43, pl. 1: 6–8, pl. 3: 3.

Material.— Three specimens.

Remarks.—There are 22 major septa at a diameter of 11–12 mm and 31 at a diameter of 18–19 mm; the major septa are thin and long, but not reaching the center; the outer or middle zone is only slightly dilated; the minor septa are very short. There are few and scattered concentric large dissepiments at the outer part and several rows of relatively dense small herringbone dissepiments at the inner part. The tabularium is wide; the axial series is wide and flat, with unevenly distributed tabellae, about 20 per centimeter. This species is distinguished from S. variable in its shorter minor septa, and fewer and scattered outer dissepiments.

Occurrence.— Russia and South China (Guizhou Province, central Hunan Province); late Givetian to latest Frasnian.

Brachiopoda

(X.P. Ma and Y.L. Sun)

Order Productida Sarytcheva and Sokolskaya, 1959

Suborder Chonetidina Muir−Wood, 1955

Superfamily Chonetoidea Bronn, 1862

Family Chonetidae Bronn, 1862

Remarks.—Chonetids from the Upper Devonian (except for the upper Famennian) of South China have not been described in previous studies. Here we illustrate two species from the upper Frasnian. These two species are different from Chonetes cf. ornatus Schumard described by Hou (1965) from the upper Famennian Shaodong Formation of central Hunan and species of Retichonetes Muir−Wood, 1962 in having more numerous concentric fila and finer costae. They are tentatively assigned to Rhyssochonetes Johnson, 1970 of the Dagnachonetinae Racheboeuf, 1981 . The classification scheme of the Chonetidina by Racheboeuf (2000) is used in this paper.

Figures

Fig. 8. Latest Frasnian (upper part of the Pa. linguiformis Zone) rugose corals from central Hunan.A, B. Peneckiella shawoziensis He, 1978. Transverse and longitudinal sections, specimen PUM 93595, sample L5/top0.2 (upper 20 cm of bed L5; × 6). C, D. Temnophyllum sp. Longitudinal and transverse sections, PUM 93594, sample L5/top0.2; × 4. E–G, I. Sinodisphyllum variable Sun, 1958. E, F. Transverse and longitudinal sections, PUM 93600, bed T3 of the Chongshanpu section; × 2.3. G. Transverse section, PUM 00072, bed T3, × 2.3. I. Longitudinal section, PUM 93596, sample L5/top0.2, × 2.3. H. Sinodisphyllum simplex Sun, 1958. Longitudinal section, PUM 93601, bed T3, × 2.3. J, K. Sinodisphyllum litvinovitshae (Soshkina, 1949) from the top of the Frasnian of Taotang, about 2 km north of the Xikuangshan section. J. Longitudinal section, PUM 00073, × 2.3. K. Transverse section, PUM 93599, × 2.3. L. Disphyllum dupliforme Kong, 1978, longitudinal section, PUM 93592, same specimen as Fig. 7H, × 4.