VELIZIA INCONSTANS CESARI & HÜNICKEN (GYMNOSPERMAE) EN LA FORMACION CERRO AGUA NEGRA (PALEOZOICO SUPERIOR), SAN JUAN, REPUBLICA ARGENTINA. AMGH. 2013;31(1):87-91. Accessed December 24, 2025. https://ameghiniana.org.ar/index.php/ameghiniana/article/view/2193