Plate 10 



Page 



FiGUKES 1, 2. Camarocladia fucoides, new species 39 



A rock composed almost entirely of the branches of 

 this organism and a thin section ( X80) exhibiting the 

 internal structure. 

 Middle Ordovician, Ssuyen formation : Black banded 

 limestone in the vicinity of Pen-hsi-hu, Liao-tung, 

 Manchuria. 



3, 4. Camarocladia arborescens, new species 38 



Section (X20) exhibiting the internal structure and a 

 portion of a rock composed almost entirely of the 

 branches of this organism. 

 Locality same as preceding. 



117 



