Page:Walcott Cambrian Geology and Paleontology I.djvu/12

From Wikisource
Jump to navigation Jump to search
This page has been proofread, but needs to be validated.
viii
ILLUSTRATIONS
TO FACE PAGE
29. Cambrian Trilobites (Holmia) 392
30. "" (Wanneria) 394
31. "" (Wanneria) 396
32. "" (Pædeumias) 398
33. "" (Pædeumias) 400
34. "" (Pædeumias, Olenellus) 402
35. "" (Olenellus) 404
36. "" (Olenellus) 406
37. "" (Olenellus) 408
38. "" (Olenellus, Callavia, Wanneria) 410
39. "" (Olenellus) 412
40. "" (Olenellus, Olenelloides, Holmia, Peachella) 414
41. Cambrian Trilobites (Olenellus, Pædeumias, Callavia) 416
42. "" (Callavia) 418
43. Eyes of Limulus and Olenellus 420
44. Genera of Mesonacidæ, showing lines of descent 422
45. Fig. 1. Panoramic view of Bow Valley from near Laggan, Alberta 424
Fig. 2. Fort Mountain from the west side of Corral Creek, Alberta 424
46. Fig. 1. Ridge southeast of Ptarmigan Lake, Alberta 425
Fig. 2. Panoramic view from the south slope of Fort Mountain, Alberta 426
47. Map of a portion of Bow Valley showing approximate area of pre-Cambrian strata 428


FIGURES

01. Diagram illustrating known distribution of families in Cambrian strata 140
2. Tangential section of Billingsella plicatella, x 200 151
3. Tangential section of Dalmanella subequata, x 35 151
4. Tangential section of Kutorgina cingulata, x 200 151
5. Tangential section of Obolus apollinis, x 200 151
6. Vertical section of strata in House Range, Utah 174
7. Vertical section of strata in Blacksmith Fork Canyon, Utah 190
8. Vertical section of strata in Mount Bosworth, British Columbia 206
9. Vertical section of strata in Mount Bosworth, British Columbia 207