ECHINODERMATA. 



(147) 



Where Located. 



N. Y. State Mus., 



<( a (( 



' <( (( i( 



i( (( t< 



U. S. Nat. Mus.. 



Ohio State Coll..., 

 Wis. State Coll... 

 Univ. Calif 



A. M. N. H 



Univ. Calif. 



Ohio State Coll..., 



N. Y. State Mus. 



(( (( a 



Univ. Calif 



A. M. N. H 



Wis, State Coll... 

 Ohio State Coll... 

 U. S. Nat. Mus.. 



Columbia Coll 



Ohio State Coll... 



Columbia Coll 



N. Y. State Coll. 



a it li 



Columbia Coll 



Univ. Calif. 



N. Y. State Mus. 



N. Y. State Mus. 



Ohio State Coll... 

 Univ. Calif 



Geological Age. 



Waverly. 



Locality. 



Richfield, Ohio. 



Jurassic j Spear Fish Creek, Black Hills. 



Chester lime 



Niagara 



Coal Measures. 



Niagara 



Waverly., 



Marcellus. 

 Niagara ... 



Niagara 



Huron Shales 

 Jurassic 



Chester Lime. 

 Niagara 



Erie Shale. 

 Waverly . . . 



Niagara . 

 Waverlv 



Waverly . 



Niagara 



Newtonville, Ohio. 

 Waukesha, Wis. 

 Carbon Hill, Ohio. 



Racine and Waukesha, Wis. 

 Cedarville, Ohio, 

 Springfield, Ohio. 



Richfield, Ohio. 



an 



<< << 



Columbus, Ohio. 

 Racine, Wis. 



(1 u 



Racine, Wis. 



Bainbridge, Ohio. 



Black Hills. 

 Pah-Ute Mtp., Nev. 



Newtonville, Ohio. 

 Yellow Springs, Ohio. 



Bedford, Ohio. 

 Richfield, Ohio. 



a n 



Lodi, Ohio. 

 Cedarville, Ohio. 

 Richfield, Ohio. 



Richfield, Ohio. 



i6 it 



Yellow Springs, Ohio. 



