564 C. SCHUCHERT PALEOGEOGEAPHY OF NORTH AMEEICA 



•case to the zones above the Cherokee and below the Wreford, or to zones 

 2 to 39, inclusive, of the table: Triticites secalicus, Lophophyllum pro- 

 liferum, Campophyllum torquium, Chcetetes milleporaceus, Eupachycri- 

 nus magister, Erisocrinus typus, Ceriocrinus hemisphericus, Phial ocrinus 

 magnificus, Rhipidomella pecosi, Enteletes hemiplicata, Orthotetes crassa, 

 Meehella striaticostata (also in Permic), Chonetes flemingi, C. verneuili- 

 anus, Productus com, P. nebrascensis, P. pertenuis, Marginifera wabash- 

 •ensis (also above), Aulacorhynchus millipunctatus, Spirifer cameratus, 

 ■Spiriferina kentucJcyensis, Composita subtilita (also above), Dielasma 

 bovidens, Hustedia mormoni, Pugnax utah, Aviculopecten occidentalis 

 (also above), A. carboniferus, Myalina subquadrata, M. perattenuata 

 (also above), M. swallovi, M. Jcansasensis, Lima retifera, Allorisma termi- 

 nah (also above), Limoptera, Pteria, Pleurophorus, Pseudomonotis 

 hawni (most common above; the genus first appears in zone 16), Sole- 

 niscus ponderosus, Trachydomia wheel eri, Trepospira sphcerulata, Worth- 

 enia tdbulata, Phanerotrema grayvillensis, Euphemus carbonarius, and 

 Bellerophon crassus. 



Elsewhere in the Coal Measures these goniatites are found or the am- 

 monites Agathiceras ciscoense (Cisco only), Dimorphoceras texanum 

 (Cisco only), Gastrioceras globulosum (Cisco), G. illinoisense (Illinois), 

 G. kansasense (Missouri and Kansas), G. mont g ornery ense (Illinois), G. 

 planorbiforme (Missouri), G. subcavum (Illinois and Texas), Goniolobo- 

 ceras welleri (Illinois and Texas), Popanoceras ganti (Cisco; the genus 

 extends upward), P. parkeri (Strawn of Texas), Schistoceras (four spe- 

 cies restricted to the Coal Measures in Ohio, Illinois, Missouri, and 

 Texas), Schuchertites graliami (Cisco only), and Shurnardites simondsi 

 (Cisco only). 



The. plants of the Missourian in Kansas have been studied by D. 

 White, 185 and his conclusions are as follows : f 'The flora of the Cherokee 

 at the base of the f Coal Measures' falls within the Allegheny formation of 

 the Appalachian basin." Elsewhere it has "close relationship with the 

 Cherokee flora of Henry county, Missouri, [and] the Mazon Creek stage 

 of the Illinois Coal Measures." About the middle of the Pottawatomie 

 (see table, page 558) is another floral horizon that does not "seem to be of 

 an earlier date than the Freeport, the uppermost division of the Allegheny 

 formation" (ibid., 112). At the base of the Douglass the plants seem 

 "to point toward a level possibly as high as the Pittsburg coal" at the 

 base of the Monongahela (ibid., 114). Those near the top of the Shaw- 

 nee are also Monongahela. Near the top of the Wabaunsee the flora is 



185 White : Bull. no. 211, U. S. Geological Survey, 1903, p. 111. 



