This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1883 Excerpt: ...two anterior ridges is swollen and forms a more or less prominent node. Dimensions of a large valve: greatest length, 1.55 mm.; greatest height, 0.87 mm.; greatest thickness of single valve, 0.32 mm. The Ohio specimens are usually a little smaller than this, their average length and height being, respectively, 1.25 and 0.7 mm. This fine 'species is represented by a single valve on a small slab collected by Dr. R. W. Ells in 1875 at Stony Mountain, and a number of specimens picked from washings of shale of the upper beds of the Hudson River or Cincinnati group, at Oxford, Ohio. It is related to S quadrilirata, Hall and Whitfiield, but the two are not sufficiently similar to make confusion between them at all likely. The following table has boon prepared to shew the stratigraphieal range of these Manitoba species which have been found also in the United States. 1. Probo8cina aulojxjroides, Nichelson 2. P. frondosa, Nichelson 3. Monticulipora parasitica, Ulrich var.. 4. Homotrypa, sp. undescribed 5. Batostoma Manitobense, Ulrich 6. Petigopora scabiosa, Ulrich 7. Batostomella gracilis, Nichelson (var.) 8. Bythepora striata, Ulrich 9. B.? delicatula, Nichelson 10. Monotrypella quadrata, Rominger 11. Stictopora, sp. undetermined 12. Dicranopora fragilis, Billings. 13. D. emacerata, Nichelson 14. Goniotrypa bilateral is, Ulrich 15. Pachydictya hexagonalis, Ulrich 16. Ptilodictya Whiteavesi, Ulrich 17. Arthroclema angulare, Ulrich 18. Helopora llarrisi, James 19. Soeptropora faeula, 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 26. Eurychilina Manitobensis, Ulrich 27. Strepula lunatifera, Ulrich 2S S. quadrilir...
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