PLATE III 



I and 2. Tellinomja absimilis n. sp. 



3. Tellinomya novicia n. sp. 



4. Murchisonia gracilis Hall. 



5. Holopea obliqua Hall. 



6 and 7. Crania ? reversa n. sp. 



8 and 9. Ophileta fausta n. sp. (8) Outer surface of part of the last volu- 

 tion showing the direction of the transverse striae, and a transverse sec- 

 tion of the same specimen. (9) Coil of an imperfect cast. 



10. Orthoceras (?) sp. undet. Cast of a fragment of the shell and recon- 

 structed circumference. 



II and 12. Orthoceras minnesotenst n.sp. (1) View from the left side and 



(12) from the smaller end of the fragment. 

 13 and 14. Siphuncle of an Orthoceras with a transverse section of the same. 

 15. Bryozoon {Ptilodictya ?). 

 16 and 17. Plearotomaria aiens n. sp. (16) View showing the deep notch 



in the aperture and (17) apical view of the same specimen. 



