163 



Cryp. 



seaweeds; showing that crustacean tracks can be distinguished 

 from genuine fosdi sea weeds; which has been denied. 



Crijphmus calUteles. See Dalmanites calliteles, F///c. 



Cryptozoon proliferum. Hall. 36th An. Rt. N. Y. 1884, 



plate 6. Covers extensive surfaces of limestone rock. Long 

 known under the wrong name of Stromatopora, it is an older 

 form and of quite different growth, viz : starting from a point 

 below and growing and expanding upward in concentric layers, 

 like a reversed cone. Greenfield, Saratoga Co., and Little 

 Falls, Herkimer Co., N. Y. — Lower Silurian. II. 



