“EVOLUTION OF THE PSEUDOSTAFFELLIDAE IN THE BASHKIRIAN STAGE (MIDDLE CARBONIFEROUS)”. RIVISTA ITALIANA DI PALEONTOLOGIA E STRATIGRAFIA 109, no. 2 (July 31, 2003). Accessed July 28, 2026. https://test-ojs-unimi-it.archicoop.it/index.php/RIPS/article/view/5503.