THE MARSHA-LLTOWN. 85 



Locality I'jg. — A few fossils have been collected from the 

 Marshalltown clay-marl just below the road at the foot of an old 

 mill pond a little less than 1.5 miles northwest of Harrisonville 

 station. The species which have been identified are as follows : 



Pe^i^Ecypoda. 



Cucullaea tippana Con. 

 Gryphaea mintabilis Mort. 

 Pecten argillensis Con. 

 Pecten vcnustus Mort. 

 Neitkea quinquecostata (Sow.). 

 Plagiostoma erecta (Whiti.) . 

 Paranomia scabra (Mort.) 



Gastropoda. 



Rostellites sp. 



Locality ip.o. — In 1895 Mr. G. N. Knapp collected a small 

 series of fossils in the Marshalltown clay-marl from Lloyd's marl 

 pits at Marshalltown, and the following species have been iden- 

 tified : 



PelEcypoda. 



Cucullaea tippana Con. 

 Crassatellites subplanus (Con.). 

 Cardimn tenuistriatum (Whitf.). 



Gastropoda. 



Turritella sp. 



