Propriopugnus, Brunton, 1984

Sun, Yuanlin & Baliński, Andrzej, 2011, Silicified Mississippian brachiopods from Muhua, southern China: Rhynchonellides, athyridides, spiriferides, spiriferinides, and terebratulides, Acta Palaeontologica Polonica 56 (4), pp. 793-842 : 809

Propriopugnus ? sp.

Fig. 9H.

Material.—Only one fragment of a ventral valve from sample MH1.

Remarks.—This very fragmentary specimen represents an anteromedian portion of ventral valve (i.e., tongue) and shows characteristic well marked radial costae which have a tendency to be gradually weaker posteriorly. The valve margin has a strongly zig−zag commissure. The specimen is 17.8 mm wide suggesting that the shell might attain about 27 mm in width. It does not belong to any other species identified in the Muhua Formation. It cannot be determined taxonomically with confidence but the general aspect of the specimen is suggestive of Propriopugnus Brunton, 1984 (see Parkinson 1954; Martínez Chacón 1979; Brunton 1984; Savage and Corlett 1996).