PLATE V. 



Cambriiin Trilobitcs from Noiili China. JJra'inivg^ b;/ K. C. Liu {^>l^W<) 



Fig. 1. Pti/chaspis angulata var. cJimensis Sun p. 67 



la cranidinm x 3 11^ cranidium x 3 



Uppermost Cambrian, Kaolishan formation, Kao-Li-Shan, Tai-An, 

 Shantung (Coll. Y. C. Sun. Cotypos, G. S. Ch. Cat. Nos. 602, 603.). 



Fig. 2. Ftiichdspis ■iralcottl .Alansuy p. 68 



2 weathered cranidium x 2 



Upper Cambrian, Shakuotun Hmestone, Sha-Kuo-Tnn Chin-Hsi- 

 Hsien, Fengtien (G. S. Ch. Cat. No. 004. Collected l)y Dr. J. ( r. Andersson). 



Fig. 3. Pt)i(:hasi>h subglobom Grabau p. 72 



3a Aveathered cranidium, natural ^ize (Holotype). 



Upper Cambrian from Fengshan limestone, Yeh-Li, Chihli (Coll. 

 H. C. T'an, G. S. Ch. Cat. No. 0()5.). 



31) cranidium x 1-^ ;]c cranidium x 3 3d cranidium x 3 



ITpper Cambrian, Kaolislian formation, Kao-Li-Shan, Tai-An, 

 ChihH (Coll. Y. C. Sun, Plesiotypes G. S. Cli. Cat. Nos. COG, 007, 608.). 



Fig. 4. Pti/i-Jidspis xnni Grabau p. 75 



4a crushed cranidium x 2 4b associated free cheek x 3 



Uper Cambrian, Fengshan formation, Feng-Shan, Yeh-Li, Chihli 

 (Coll. H. C. T'an, Holotype (}. S. Ch. Cat. Nos, 609.). 



Fig. 5. Ftijcha^pi.-^ acamvs var. pwraUUn Sun p. 75 



5a crushed cranidium x 2 Hb crushed cranidium x '2 



•Ic crushed cranidium x '2 ^d crushed cranidium x 2 



Upper Cambrian, from the Upper hmestone of Chau-AIi-Tien, Shan- 

 tung (Coll. National University ]']xcursion. Cotypes, G. S. Ch. Cat. Nos. 

 610, 611, 012, 01.3, 614.). 



Fig. 6. Ptychaspis (Anderssonia) tcnii Sun p_ 79 



6 cranidium x 5 



Upper Cambrian, from the highest zone of Chau-^Ii-Tien. (Collected 

 by National University Excursion. Holotype, G. S. Ch. Cat. No. 015. ). 

 Fig. 7. Pti/chaspis (Anderssonia) fcngtienenxis Sun p 73 



7a cranidium x 4 7b cranidium x 3 7c associated p3rgiduim x 6 



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