214 APPENDIX. 



an identification with its European equivalents ; thereby 

 stamping upon the new classification of the older fossiliferous 

 rocks an additional proof of contemporaneity as regards the 

 'Far West' of America, which will most probably be veri- 

 fied in time over our whole globe. 



" This series of rocks, then (which I feel necessitated to 

 refer to the Devonian system, for reasons stated above), 

 underlying those of the carboniferous system, have, conse- 

 quently, their appropriate place above the silurian rocks, 

 members of which are found beyond Wolf river, and, again, 

 now and then, in proceeding from bluff to bluff along the 

 Missouri. 



*' The carboniferous rocks, which form a large and im- 

 portant feature in the geology of this region, are full of 

 fossils, and may be said to offer a new field of exploration to 

 the fossil conchologist in the great number of new species 

 belonging to the genera producta — delthyris, orthis, stropho- 

 mena, atrypa, favorites, &c. To indicate the numerous 

 localities w^here these fossils are variously associated with 

 each other, would only be multiplying a list of them — which 

 I cannot afford to do in a report, the scale of which hardly 

 leaves room to lay down the greatest geological divisions of 

 the country. I would only add, that the producta lobata, and 

 producta punctata, and the turbinolia fungites of Phillips, 

 appear to me to be the characteristic fossils of the carboni- 

 ferous rocks in this region. They occur at localities very 

 distant from each other — between Five Barrels Island and 

 Council Bluffs ; on the Des Moines ; from Racoon Fork to 

 the lower rapids of the Missisippi ; in the vicinity of St. 

 Louis, St. Genevieve, &c., &c. At the last-mentioned 

 locality, on the Hmestone over which the creek called Ga- 

 bouri flows, the turbinolia fungites and a new species of 

 producta are found associated with the bcUerophon hiulcus, 



