C AMBRO- SILURIAN MICRO-PAL .EONTOLOGY. 



5Y 



The following table has been prepared to whew the wtratigraphical 

 range of those Manitoba .specien which have been found also in the 

 United States. 



Si'KciEs FKOM Stony Mountain. 



1. Proboscina auloi)oroides, Nicholson — 



2. P. frondosa, Nicholson 



3. Monticiilipora parasitica, Ulrich var . . 



4. Homotrypa, sp. undescribed 



5. Batostoma Manitobense, Ulrich 



C. Petigopora scabiosa, Ulrich 



7. Batostomella gracilis, Nicholson (var.) 



8. Bythopora striata, Ulrich 



9. B. ? delicatula, Nicholson 



10. Monotrypella quadrata, Rominger 



11 . Stictopora, sp. undetermined 



12. Dicranopora fragilis, BilUngs 



13. D. emacerata, Nicholson 



14. Goniotrypa bilateralis, Ulrich 



15. Pachydictya hexagonalis, Ulrich 



16. Ptilodictya Whiteavesi, Ulrich 



17. Arthroclema angulare, Ulrich 



18. I lelopora llarrisi, .lames 



19. Sceptropora facula, Ulrich 



20. Nematopora? sp. undescribed 



21. Leperditia subcylindrica, Ulrich 



22. Aparchites minutissimus, Hall 



23. A. unicornis, Ulrich (var.) 



24. P. ? (Beyrichia) parallela, Ulrich 



25. P. lativia, Ulrich 



20. Eurychilina Manitobensis, Ulrich 



27. Strepula lunatifera, Ulrich 



28 S. quadrilirata, var. simplex, Ulrich — 

 29. By thocypris cylindrica, Hall 



a 

 o 



3 



Hudson River 

 group. 



o 

 o 



g 



oi 



CD 





■3t O 



20 



Species kkom St. Andrews. 



1. Monticiilipora AVetherbyi, Ulrich 



2. Fistulipora (?) laxata, Ulrich 



3. Pachydictya magnipora, Ulrich 



4. P. acuta, Hall 



5. Phylloporina Trentonensis, Nicholson 



w 







w 



o 





^p 3.1 



W 



3 03 



P-CD 



<i 



^ 



(T> 



o 



•t 







* 





* 



Thus, out of 29 species from Stony Mountain, 20 are known to 

 occur in the upper beds of the Hudson Kiver or (Cincinnati group at 

 localities in the United States. 



