Badchisestis,a new genus of continental gastropods from the Middle Eocene of Turkmenia |
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| Abstract: | A new genus of terrestrial gastropod Badchisestis and three included species are described and assigned to the Cyclophoridae. Badchisestis cupaeformis, B. piriformis and the type species B. digitulus all come from the Middle Eocene, Alayan series of Badkhyz, southeast Turkmenia, in the region of Mt. Chakmaly-Chonga. Korobkov's diagnosis of the genus is as follows: Shells of medium (30 mm) to considerable (60 mm) size, elongate-ovate, dolioform, pyriform or oval-digitiform, consisting of six to nine slightly convex, low whorls, separated by a distinct surface suture. Height of last whorl 1;3, 2/5 or 1;2 the height of the whole shell. Aperture comparatively small, broader than high, in the form of a slightly truncated broad oval, angular in the parietal part, with a sulcus in the sutural angle. Peristomatal margins thickened and turned back towards the dorsal surface. Pseudo-umbilicus, narrow not fringed. Outer surface with oblique, converging slender riblets. — N. F. Sohl. |
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