| Arthricocephalus 
        sp Trilobite 
        Order Corynexochida, Family Oryctocephalidae Geological 
        Time: Cambrian Size: Largest 
        trilobite is 9 mm Fossil Site: 
        Hotang and Dachenling Formations, Guizhou, China 
 
         
          |  Description: 
              This is an excellent specimen exhibiting fine detail of the cephalon, 
              thorax and ovate pygidium. It is a detailed example of a member 
              of the Order Corynexochida, Family Oryctocephalidae, It is another 
              Chinese trilobite genus which was quite common a few years ago, 
              but, alas, now is rarely available. 
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