First record of Malayaspira Kobayashi, 1958 (Mollusca, Gastropoda) in the lower Ordovician San Juan Formation, Argentine Precordillera. Ameghiniana, [S. l.], v. 46, n. 3, p. 567–571, 2009. Disponível em: https://www.ameghiniana.org.ar/index.php/ameghiniana/article/view/90. Acesso em: 24 oct. 2025.