印度板块
This area is close to northern margin of the Indian plate. The historical area of origin of the Staffordiidae has not been researched because the coastal area in southern Asia where it is found became uninhabitable after the Indian Plate and Eurasian Plate collided 50 to 55 million years ago. The original ancestral area of limacoid families is thought to be the Palaearctic region and south-eastern Asia. Thus, it has been hypothesized that the Staffordiidae colonized its current area from the southern margin of the Asian part of the Eurasian Plate during the Oligocene period.