C. R. Stanffer — The Minnesota Devonian. 401 



cultivation. At no place is this part of the Devonian well 

 shown but there is a fair section shown on Mr. Grimm's 

 farm where it sticks out along* the road and in the field. 



Section on Mir. Charles Grimm's Farm Five Miles West 



of Granger. 



Recent. Thickness 



4. Soil 0' 6" 



Devonian (Cedar Valley limestone) 



3. Limestone, rough brecciated, brown in color 3' 0" 



2. Limestone, fairly massive, rough, and gray to 

 brown in color. It contains occasional masses 

 of chert, and cavities filled with calcite crys- 

 tals. Fossils are abundant. 



Cladopora magna Hall and Whitfield (r) 



Cladopora sp. (c) 



Favosites sp. (c) 



Zaphrentis solida Hall and Whitfield (a) 



Polyp or a sp. (c) 



Atrypa reticularis (Liunaeus) (c) 



Camarotcechia sp. (r) 



Cyrtina hamiltonensis Hall (c) 



Gypidula laeviuscula Hall? (c) 



Spirifer asper Hall (r) 



Stropheodonta demissa (Conrad) (r) 



Nucleospira sp. (r) 



Schuchertella chemuugensis arctistriata (Hall) (c) 



Conocardium sp. (c) 



Leptodesma sp. (r) 



Palaeoneilo sp. (r) 



Bellerophon perplexa Walcott (a) 



Cyclonema sp. (r) 



Eunema sp. (c) 



Murchisonia dowlingi Whiteaves? (c) 



Pleurotomaria sp. (c) 



Raphistoma terrelli Cleland (r) 



Hyolithes alatus Whiteaves (r) 



Orthoceras sp. (r) 



Poterioceras 2 sp. (r) 



Phacops sp. (r) 



Proetussp. (r) 



10' 0" 



