“First record of Malayaspira Kobayashi, 1958 (Mollusca, Gastropoda) in the lower Ordovician San Juan Formation, Argentine Precordillera” (2009) Ameghiniana, 46(3), pp. 567–571. Available at: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/90 (Accessed: 28 October 2025).