214 APPENDIX. 



an identification with its European equivalents ; thereby- 

 stamping upon tlie 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 

 IVKssouri. 



'' 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 where 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 Avhich 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 limestone over which the creek called Ga- 

 bouri flows, the turbinolia fungites and a new species of 

 producta are found associated witli tlie Ijellcrophon hiulcus, 



