376 D. K. Greger — Devonian of Central Missouri. 



Creek shale list is that of the type locality. The names 

 preceded by an asterisk are species common to the Lime 

 Creek shale or the Cedar Valley limestone of Iowa. 



(A) = abundant, (C) = common, (R) = rare and (VR) = very 

 rare. 



Fauna of the Craghead Creek Shale. 



Anthozoa. 



*Acervularia profunda Hall. (R) 

 * Aulopora sp. ? (C) 

 *Aidopora sp. ? (C) 

 Heliophyllum ? sp. ? (C) 



Bryozoa. 



*Leioclema occidens White and Whitfield. (A) 



Crinoidea. 



Aristocrinus concavus Rowley. (VR) 

 Melocrinus gregeri Rowley. (R) 

 Melocrinus lylii Rowley. (R) 

 Melocrinus tersus Rowley. (R) 



The four species of Crinoidea described by Prof. Rowley 

 seem to be confined to the limestone constituting the middle 

 member of the shale and have not been found outside of 

 Callaway county. 



Brachiopoda. 



Athyris minima Swallow. (C) 



Atrypa gregeri Rowley. (C) 

 *Atrypa hystrix oceidentalis Hall. (R) 

 '""Atrypa reticularis Linnaeus. (A) 



* Camarotoechia sp. nov. (R) 

 Cranaena morsii Greger. (R) 



* Cyrtina triquetra Hall. (C) 

 *Dielasma calvini Hall and AVhitfield. (C) 



Dielasma sp. nov. (R) 



* Gypidula comis Owen. (R) 

 Hypothyris sp. nov. (R) 

 Leiorhynchus sp. nov. (R) 



* Philhedra famelica Hall and Whitfield. (C) 

 Philhedra crenistria Hall. (R) 

 Productella callawayensis Swallow. (C) 

 Productella marquessi Rowley. (C) 



*Pugnax altus Calvin. (R) 



* Schizophoria iowensis Hall. (C) 





