The Qinghezhen fauna found along the north margin of the North Chinaplatform occurs in strata originally considered to be Archean, Proterozoic and earlyEarly Paleozoic in age. The fossil zone extends as long as 2000 km from Jiapigou ofsouthern Jilin Province, Kaiyuan of Liaoning Province and Pingquan and Chengdeof Hebei Province to Guyang of Inner Mongolia. Up to now more than 50 fossillocalities have been found and more than 600 pieces of microfossils taken. Studiesof the distribution of the fossils of the Qinghezhen fauna and the geochronologyand stratigraphy of the fossiliferous strata show that it is not advisable to assignthe valualar and aculeilar fossils to the Qinghezhen fauna. Paracarinachitids are oflimited distribution, scanty and cannot provide grounds for regional correlation,and their distribution in geological history are not certain. The Qinghezhen faunaincludes mainly tubular fossils and globular fossils. Tubular fossils appeared in theChangcheng Period (Middle Proterozoic), they also occurred in large numbers duringthe Ordovician. Globular fossils appeared from the Early Cambrian to Ordovician.The study on the geohistorical distribution of the fossils making up the Qinghezhenfauna is very significant for solving the tectonic evolution of the north margin inthe North China platiorm and for making a thorough study of small shelly fossilsin northern China.