D. K. Greger — Devonian of Central Missouri. 377 



Schizophoria macfarlani Meek. (A) 



Schuchertella pandora Billings. (R) 



Spirifer amarus Swallow. (A) 

 *Spirifer asper Hall. (R) 

 *Spirifer euryteines Owen. (R) 



Stropheodonta sp. ? (A)f 



Strophonella crassa Rowley. (VR) 



Pelecypoda. 



Six species of this class are recognized in the fauna, but all 

 are preserved only as casts of the interior and their relationship 

 has not been determined. 



Gastropoda. 



The Gastropods, like the Pelecypods, are poorly preserved 

 casts and their affinities are unknown. 



Cephalopoda. 



Nautilus lawsi Swallow. (R) 

 Orthoceras sp. ? (C) 



Fauna of the Callaway Limestone. 

 Porifera. 



* Stromotopora sp. ? (A) 



Anthozoa. 



* Acervidaria davidsoni Edwards and Haime. (A) 



Aulopora sp. ? (R) 

 *Favosites alpenensis Winchell. (A) 

 * Pachyphyllum woodmani White. (R) 



Zaphrentis, two indet. sp. (A) 



Crinoidea. 



Megistocrinus cf. latus Hall. (R) 

 Melocrinus cf. nodosus Hall. (R) 



Brachiopoda. 



* Athyris fultonensis Swallow. (A) 

 *Atrypa reticularis Linnaeus. (A) 



* Cranaen a iowensis Calvin. (C) 



fProf. Swallow in 1860 described in the St. Louis Academy of Science 

 Transactions ten species of Stropheodonta from the Callaway limestone and 

 Craghead Creek shale, without illustrations. The types were lost at the 

 time the State University burned and from the descriptions specific identi- 

 fication is impossible. 



