Permian brachiopod faunas of southeastern Mongolia: systematics, biostratigraphy, palaeogeographical and palaeobiogeographical implications

Abstract

This research systematically studied Permian brachiopod fossils from southeastern Mongolia and correlated them with many places around East Asia. The research found that the fossil faunas are on the mixed affinities between high-latitude cool- to cold-water and low-latitude warm water species. Explanations are provided through southeastern Mongolia’s unique palaeogeographical and palaeoceanographical position in the Permian time