描述了产于四川邻水地区早二叠世梁山组的一新属新种，Linshuichonetes elfinis gen.et sp.nov.。新属以个体特别微小，背内无任何隔板，壳表饰有细瘤和细刺为特征。新种代表了华南地区阳新期海侵开始阶段生活于局限的潮坪或xi湖环境下的一种机会种。

A new genus and species, Linshuichonetes elfinis , belonging to the Rugosochonetidae, is described from the Early Permian (Late Artinskian or early Kungurian) Liangshan Formation of the Yangtze block. The new genus is defined externally by the presence of fine, but delayed, capillation and a weak or absent median sulcus and fold and by the presence of a distinct posteromedian sinus on the ventral umbo; and internally by a lack of median, lateral and accessory septa in the dorsal interior; absence of vascular trunks in the ventral interior and the presence of distinct radiating rows of papillae in the interior of both valves, particularly an unusual clustered arrangement of papillae on the posteromedian portion of the dorsal interior. The local environment during the deposition of the Liangshan Formation appears to have been a restricted tidal flat or lagoon which experienced frequent sealevel fluctuations associated with the onset of the Yanghsingian transgression. The new species, L. elfinis , appears to have several morphological adaptations enabling successful exploitation of this environment. It was typically a very small and thin valved species with a high surface area to volume ratio, an advantage in an oxygen restricted environment. The small size and numerous body spinules would have aided individuals to remain suspended at the top of the fine, soft substrate. It also dominated the brachiopod assemblage in the Liangshan Formation, comprising up to 94% of specimens within a bed. These factors indicate that the new species appears to be an opportunistic species.

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