DEVONIAN AND CARBONIFEROUS FAUNA. 199 



SILURIAN. 



Feet. 

 16. Light gray siliceous limestone 1,000 



8,560 



In the bluish black limestone at the top of No. 5 the following Lower 

 Carboniferous fauna comes in : 



Amplexus, sp. ? Spirifera (M) lineata. 



Syringopora, sp. ? Cyrtina, sp?. 



Acervularia pentagona. Athyris subquadrata. 



Fenestella, sp.? Rhynchonella. 



Chonetes, sp. I Terebratula, sp. ? 



Chonetes granulifera. Platyceras, sp.? 



Chonetes, sp.? Bellerophon, sp.? 



Productus nebrascensis. Euomphalus, sp. ? 



Productns punctatus. Euomphalus laxus. 



Productus tenuicostatus. Euomphalus (Straparollus) ophinea. 



Productus semireticulatus. Straparollus, sp. ? 



Productus, sp! Holopea, sp.? 



Productus, sp ? Loxonema. 



Orthis resupinata. Loxouema. 



Streptorhynchus cremstria. Pleurotomaria, sp. ? 



Syringothyris cuspidatus. Pleurotomaria, sp. ? 



Spirifera pinguis. Edmondia, 2 sp. ? 



Spirifera pulchra. Leperditia, sp. ? 



Spirifera striata. Prcetus peroccidens. 



The following Devonian fauna was collected from No. 8 : 



Lingula (like L. ligea). Rhynchonella sinuata. 



Orthis impressa. Athyris ? sp. ? 



Productus shumardianus. Pentamerus lotus. 



Productus (like P. lachryinosa). Modiomorpha, sp? 



Strophodonta, sp. ? Euomphalus, sp. ? 



Spirifera, sp.? Platyostoma lineata? 



Nucleospira concinna. Orthoceras, sp. ? 



Cyrtina hamiltonensis. Orthoceras, sp. ? 

 Amboco3lia (like young of A. umbonata). Leperditia, sp:? 

 Rhynchonella duplicata. 



In this section we have about 8,000 feet of nearly continuous lime- 

 stone strata, broken occasionally by thin beds of yellow sandstone, the 



