摘要: I.Discussion on the stratigraphical position of the graptolite-bearing shale and the distinguishing features of the fauna Our country,being vast in territory and rich in natural resources,unremittingly affords usinteresting scientific materials of both theoretical and practical significance.The finding of the newgraptolite fauna from the Ordovician shale of Tsaidam is one of a thousand like instances.Thisfinding brings forward a series of scientific problems which we should resolve,and thus pointsout more definitely the direction in which we must lay stress on our study.The graptolites were discovered and collected in 1956 by Comrade Sun Tien-Ching and other
摘要: The present paper deals with six new genera,one new subgenus,twenty new species andthree new varieties of trilobite found from the Middle Cambrian formations of North China.Most of them were once enlisted in the writer’s foregoing paper(Chang,1957),in which a briefaccount of the stratigraphic sequence has been given.It now seems desirable to describe thosenew forms for further reference.
