Atrypida Rzhonsnitskaya, 1960

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 : 388

Order Atrypida Rzhonsnitskaya, 1960 Suborder Atrypidina Moore, 1952 Superfamily Atrypoidea Moore, 1952 Family Atrypidae Gill, 1871

Remarks.— Ma (1998) described and figured a few atrypid forms from the latest Frasnian of the Chongshanpu and Jiangjiaqiao sections of central Hunan Province. Later, abundant specimens of Spinatrypa and “ Costatrypa ” and rare Iowatrypa ? qidongensis ( Fig. 11P, Q ) were collected from the Shetianqiao section.

Figures

Fig. 11. A–E. Spinatrypa subkwangsiensis (Tien, 1938), sample S−Y−4. A–C. Posterior, ventral and lateral views of PUM 00016; × 2. D, E. Dorsal and posterior views of PUM 00020; × 2. F–O. Iowatrypa? shaodongensis sp. nov., S−Y−4.F–I. Posterior, dorsal, lateral, and ventral views of paratype PUM 00003; × 2. J–N. Posterior, lateral, dorsal, anterior and ventral views of holotype PUM 00004; × 2. O. Ventral view of paratype PUM 00001, × 1.5. P, Q. Iowatrypa? qidongensis Ma, 1998, sample S−Y−4, posterior and ventral views of PUM 00008; × 1.5.