THE STORY OF OUR ROCK FOUNDATION 



49 





FIG. 34. Animal fossils from Niagara limestone in the Chicago region. 

 a, a coral, Fawsites niagarensis Hall; b, Phraginoceras nestor Hall; c, Pentamerus 

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

 neglecta McChesney; / and g, crinoids: /, Eucalyptocrinus asper Weller; 

 g, Caryocrinites ornatus Say; h, Strophostykis levatus Hall; i, a straight-shelled 

 cephalopod, Dawsonocerus annulatum Sowerby. Photo by Fenton. 



