TEE STORY OF OUR ROCK FOUNDATION 



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Fig. 34. — Animal fossils from Niagara limestone in the Chicago region, 

 a, a coral, Favosites niagarensis Hall; h, Phraginoceras neslor Hall; c, Pentamcrus 

 oblongus Sowerby; d, a trilobite, Calymene- celebra Raymond; e, Amphicoelia 

 neglecta McChesney; / and g, crinoids: /, Eucalyptocrimis as per Weller; 

 g, Caryocrinites ornatus Say; h, Strophostylus Icvatus Hall; /, a straight-shelled 

 cephalopod, Dawsonocerus anmdatum Sowerby. Photo by Fenton. 



