BBBDB : PAUNAL STUDIES, II. 167 



collected from this formation, except a few fragments of Cala- 

 mites and Cordaites in a soft sandstone immediately beneath 

 the Topeka limestone, in the eastern part of that city. The 

 type exposure is at Calhoun's Bluffs, three miles northeast of 

 Topeka. 



25. Hartford (Topeka) Limestone. ( Adams's MSS., by 

 permission of U. S. Geological Survey.) The following section 

 of the rocks is about as given by Doctor Bennett when he first 

 described them : 



ft. in. 



g. Limestone weathering buff 2 



/. Drab shales 3 



( . Limestone weathering buff 1 6 



(/. Buff calcareous shales with abundant fossils 2 



c. Blue to brown limestone, always weathering to a brown buff, cherty 



near the top, fossiliferous 5 8 



b. Blue shales 1 6 



a. Blue limestone, weathering dark buff 6 



Total thickness of formation 21 8 



Most of the fossils enumerated below were taken from layers 

 € and d, though the entire set is more or less fossiliferous, with 

 about the same species running through them. 



Fusulina secalica ( Say) . 



Amblysiphonella prosseri Clarke. 



Lophophyllum profundum( Milne-Edwards and Haime)Foerste. 



Crinoid stems and plates, referred by Bennett to Zeacrinus 

 mucrospinus and Z. acanthophorus . 



Arcluvocidaris agassizi Hall. 



Arch&ocidaris trudifer White. 



Worm. 



Fenestclla shumardi Prout. 



Fenestella remota Foerste. 



Polypora elliptica Rogers. 



Polypora submarginata Meek. 



Rliombopora lepidodendroides Meek. 



Septopora biserialis (Swallow) Foerste. 



Septopora sp. 



Amboccelia planoconve.ra ( Shumard ) Hall and Clarke. 



Chonetes granulifer Owen. 



Derbya crassa (Meek and Hayden) Waagen. 



Derbya keokuk (Hall) Hall and Clarke. 



Dielasma bovidens (Morton) White. 



