Fossils have also been found in the Yunnan Province in China ( Morganucodon oehleri ) , in various parts of Europe and North America and some at least closely related animals ( Megazostrodon ) are known from exquisite fossils from South Africa . Most of this comes from Glamorgan in Wales ( Morganucodon watsoni ) , but fossils have also been found in the Yunnan Province in China ( Morganucodon oehleri ) , in various parts of Europe and North America and some at least closely related animals ( Megazostrodon ) are known from exquisite fossils from South Africa .