PAPERS ON GEOGRAPHY AND GEOLOGY 230 



Ft. In. 



Limestone, shaly, bluish, with bands of shale at 

 different levels, containing many fossils. .. .about 10 



Shale, in bands 3 to 6 inches thick, alternating with 

 limestone layers of about the same thickness, 

 containing very many fossils 12 



Shale, dark, calcareous, containing many shells of 

 species of Dalmanella, Rafinesquina, Pterinea, 

 Isotelus, and Synhomalonotus 2 



Concealed about 5 



The fossils from the strata described in the .last section 

 are listed below: 



LIST OF RICHMOND FOSSILS FROM ALONG FOX RIVER 



BETWEEN OSWEGO AND YORKVILLE 

 Arthropora shafferi (Meek) (r) 

 Batostoma pr.osseri C. & G. (r) W. L. 

 Batostoma varians (James) (c) W. Wh. L. 

 Bythopora delicatula (Nich.) (r) W. L. Wh. 

 Bythopora meeki (James) (r) W. L. Wh. 

 Bythopora striata Ulr. (c) W. 

 Hallopora,cf. onealli (r) 

 Hallopora subnodosa (LTr.) (r) Richmond 

 Hallopora cf. subplana (r) 

 Homotrypella rustica (r) W. L. Wh. 

 Perenopora decipiens Rom. (c) A. E. 

 Stigmatella spinosa U. & B. (r) W. 

 Stigmatella spinosa var. (c) 

 Dalmanella testudinaria (Dalman) (c) 

 Dinorthis subquadrata (Hall) (r) L. Wh. 

 Hebertella insculpta (Hall) (r) W. 

 Hebertella occidentalis (Hall) (r) L. Wh. 

 Lingula deflecta Winchell and Schuchert, (r) 

 Plectambonites sericeus (Sower by) (c) W. L. 

 Platystrophia cumingsi McE. (c) W. 

 Rafinesquina alternata (Emmons) (a) Richmond 

 Rhynchotrema capax (Conrad) <c) W. L. Wh. 

 Strophomena neglecta (James) (r) W. 

 Strophomena planodorsata W. and S. (c) 

 Strophomena planumbona Hall (c) W. L. 

 Zygospira modesta Hall (c) Richmond 

 Byssonychia radiata (Hall) (c) Richmond 

 Pterinea sp. 



Tentaculites oswegoensis M. and W. (c) 

 Calymene meeki Foerste (c) Richmond 

 Synhomalonotus christyi (Hall) (c) W. 

 Isotelus maximus Locke (c) 



In the foregoing list there are six species that in Indiana 

 occur only in the AYaynesville formation, and not a single 

 one is present that in Indiana is diagnostic of a younger 

 Eichmond horizon. 



About 35 miles still farther northwest, strata of 

 Eichmond age are exposed along a stream V/ 2 miles 

 west and *4 mile north of Kingston, in DeKalb County. 

 The strata at this locality consists of impure shaly 



