Platyzona Knight, 1945

Type species. Platyzona trilineata (Hall, 1856), Carboniferous, USA.

Remarks. Nützel in Nützel & Nakazawa (2012) placed Platyzona in Caenogastropoda because Pan & Erwin (2002) reported the presence of caenogastropod larval shell of this genus from the latest Permian of South China.