FAUNAL EVIDENCE AND CORRELATION. 



225 



Table VI. « — Table showing d'lstribulion of Mississippian species in the Millsap limestone in the vicinity of 



Canyon. 



Total. 



BEACHIOPODA, 



Orthothetes insequalis 



Spirifer centronatus 



Spiriferina solidirostris ? 



Cransena subelliptica var. hardingensis 



PELECYPODA. 



Myalina arkansa,*^ana ? 



GASTEEOPODA. 



Pleurotomaria?sp. a , 



CO 



(?) 



Considered by itself the age of this fauna is not very clear from the species col- 

 lected, but so far as they go the indications ai'e for the Mississippian epoch, and the 

 lower part of it. This fauna is related to that of the Millsap limestone of the Pikes 

 Peak quadrangle, to the Mississippian limestone of Perry Park, and also to the 

 Leadville limestone of Leadville. It will be more satisfactory to consider the com- 

 bined evidence from the faunas of all these areas than to review each separatelj'. 



PIKES PEAK QUADRANGLE. 



The collections considered in this group were made by Whitman Cross in the 

 course of stratigraphic work for the Pikes Peak folio. They came from the Millsap 

 limestone at its exposures in Garden Park in the southern part of the quadrangle. 

 The fauna, which consists of but four species from as many localities, is shown in 

 the following table: 



Table VII." — Ta1}le shoving distrihition of Mississippian species in the Millsap limestone in Oarden. Park 



in-the Pikes Peak rpiadrnnrjle. 



BEACHIOPODA. 



Spirifer centronatus 



Spiriferina solidirostris ? 



Cransena subelliptica var. hardingensis 



2365. 



PELECYPODA. 



Myalinp arkansasana?. 



Total. 



In its geographic and faunal relations the localities in the Pikes Peak quadrangle 

 ai'e essentially the same as those from near Can3^on, and the same comments that 

 were offered there appl}' here also. 



a For a description of the localities indicated by number in this table see locality register, pp. 519-532. 



14364— No. 16—03 15 



