†Sokelasma esaulovae Smirnova 2004

Smirnova 2004. The Lower Kazaniann (Upper Permian) terebratulid assemblage of the family Beecheriidae fam. nov. (Brachiopoda) from the East of the Russian Platform. Paleontologicheskii Zhurnal, 2, March 2004: 50-54