Girtyspira, Knight, 1936

Ketwetsuriya, Chatchalerm, Karapunar, Baran, Charoentitirat, Thasinee & Nützel, Al- Exander, 2020, Middle Permian (Roadian) gastropods from the Khao Khad Formation, Central Thailand: Implications for palaeogeography of the Indochina Terrane, Zootaxa 4766 (1), pp. 1-47 : 33

Girtyspira ? sp.

( Fig. 22F )

Material. One specimen: ESKU-19- LP 222.

Dimensions (mm): ESKU-19- LP 222: height = c. 1.0; width = 0.6.

Remarks. This very small single specimen is smooth and has slightly convex whorl with blunt apex and possess triangular-shaped aperture. It resembles Girtyspira yodai Erwin, 1988 from the Permian Cathedral Mountains Formation of West Texas. However, Girtyspira yodai species has much more slender shell and impressed suture.

Figures

FIGURE 22. A–C, Strobeus? sp. 1, A–B, ESKU-19-LP 49. C, ESKU-19-LP 90. D–E, Strobeus? sp. 2, D, ESKU-19-LP 217. E, ESKU-19-LP 220. F, Girtyspira? sp., ESKU-19-LP 222. G, Heterosubulites longusapertura sp. nov. ESKU-19-LP 215, holotype. Scale bars represent: 2 mm (A–C); 200 μm (D–G).