KINDERHOOK FORMA TIONS OF MIS SO URI 1 4 7 



brachiopods are common to the Sac limestone, but there are 

 introduced several species, such as Spirifer grimesi, Productus 

 burlingtonensis, Productus punctatus, and AtJiyris lamellosus (which 

 was also present in the Northview sandstone), which pass upward 

 and connect the fauna with that of the Burlington limestone 

 above. 



Conclusions. — A critical examination of the Kinderhook 

 faunas of southwestern Missouri, shows that the entire series of 

 strata in that region referable to this division of the Mississipian 

 series are to be correlated with the upper division of the Kinder- 

 hook, or the Chouteau limestone of central Missouri. This 

 Chouteau fauna is not one uniform fauna throughout, but 

 exhibits at least two rather well-defined facies, one brachiopod 

 fancies generally characteristic of the limestones and another 

 pelecypod facies characteristic of the more clastic sediments. 

 In Greene county, Missouri, the brachiopod facies is present in 

 the Sac limestone and the Pierson limestone, while the pelecypod 

 facies is present in the Northview sandstone. 



In the Burlington section, beds 5, 6, and 7 are apparently to 

 be correlated with the Greene county formations, and in the 

 faunas of these three beds the same brachiopod and pelecypod 

 facies are exhibited, but in a different order, the pelecypod facies 

 occupying bed 5, and the brachiopod facies beds 6 and 7. 



In central Missouri, the region of the typical Chouteau lime- 

 stone, opportunity has not been offered to study these faunas in 

 situ. Among the material received from that region, however, 

 the same two faunal facies may be recognized, though it is 

 impossible to work out their interrelations without careful field 

 investigation. 



These two faunal facies apparently lived contemporaneously 

 throughout the area covered by the upper Kinderhook sea, each 

 one occupying those portions of the region where the local con- 

 ditions were best adapted to its development, shifting about with 

 local changes in the environment, and each one going on with 

 its developmental changes with the progress of time. The faunas 

 of the Northview sandstone and of bed No. 5 at Burlington, 



