Abstract: Based on tectonic, lithological and biotic features, 1 1 regions may be recognized in the
 Devonian Period of China.  The Junggar and Hinggan regions are characterized by thick sequences
 of clastic rocks associated with volcanie rocks; carbonate deposits were only local, sometimes con-
 sisting of  isolated reefs.  The Tarim region was characterized by intertidal sandstones on the plat-
 form and deeper water deposits in its marginal areas.  The North China region was mostly barren of
 Devonian deposits except in some marginal areas, and die Qilian-Qaidam region was a mountai-
 nous region mostly with Middle and Upper Devonian Kontinental sediments Qlinling Region was
 closely related widi the South China Region in terms of faunal affinity, probably being a marginal
 area of the South China Plate.  Western Yunnan and the major part of Xizang (including northern
 Xizang and the northern slope of the Himalayas) featured continuous Silurian-Devonian depo-
 sition, generally with carbonates in the Lower Devonian, and different lithologies in different
 regions for the Mddle and Late Devonian.  Qinling and Hoh Xil-Bayan Har regions were
 closely related with the South China Region, yielding common fossils such as brachiopods String-
 ocephalus and Yunnanella (= Nayunnella) faunas.  The Devonian Period of  South China comprised
 deposits of two large transgressive-regressive cycles: Lochkovian to Eifelian and late Eifelian to
 about the end of die Devonian Period.