CINCINNATI GROUP FOSSILS. 3 



Genus Discophycus, Walcott. 



Range. 



29. D. typicalis, Walcott near 3 



Genus Cyclophycus, Ulrich. 



30. C. laterale, Ulrich near 3^ 



Order EQUISETACE^E. 



Genus Sphenophyllum, Brongniart. 



31. S. primaivum, Lesquereux 1 — 4 



Order LYCOPODIACE^E. 



Genus Protostigma, Lesquereux. 



32. P. sigillaroides, Lesquereux 2 — 6 



PEOTOZOA. 



Order SPONGIDA. 

 Genus Astylospongia, Roemer. 



33. A. globosa, Ulrich 5—7 



34. A. tumida, James near 3? 



Genus Microspongia, Miller & Dyer. 



35. M. gregaria, Miller & Dyer 3 — 7 



36. M. irregularis, Ulrich 5 — 6 



Genus Eospongia, Billings. 



37. E. (?) communis, Ulrich near 6 



38. E. turnerensis, Ulrich ... near 6 



Genus Calathium, Billings. 

 38a. C. obliquum, Ulrich near S 



Genus Tricholites, Ulrich. 



39. T. typicalis, Ulrich near 4 



