Cambrian Geology and Paleontology/Volume 1

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Smithsonian Miscellaneous Collections 53


SMITHSONIAN MISCELLANEOUS COLLECTIONS
VOLUME 53


CAMBRIAN
GEOLOGY AND PALEONTOLOGY

I


BY
CHARLES D. WALCOTT


Smithsonian Institution Logo (1910)


"EVERY MAN IS A VALUABLE MEMBER OF SOCIETY WHO, BY HIS OBSERVATIONS, RESEARCHES, AND EXPERIMENTS, PROCURES KNOWLEDGE FOR MEN" — SMITHSON


(Publication 1949)


CITY OF WASHINGTON
PUBLISHED BY THE SMITHSONIAN INSTITUTION
1910

ADVERTISEMENT


The present series, entitled "Smithsonian Miscellaneous Collections," is intended to embrace the principal publications issued directly by the Smithsonian Institution in octavo form; those in quarto constituting the "Smithsonian Contributions to Knowledge." The quarto series includes memoirs, embracing the records of extended original investigations and researches, resulting in what are believed to be new truths, and constituting positive additions to the sum of human knowledge. The octavo series is designed to contain reports on the present state of our knowledge of particular branches of science; instructions for collecting and digesting facts and materials for research; lists and synopses of species of the organic and inorganic world; reports of explorations; aids to bibliographical investigations, etc., generally prepared at the express request of the Institution, and at its expense.

In the Smithsonian Contributions to Knowledge, as well as in the present series, each article bears a distinct number, and is also separately paged unless the entire volume relates to one subject. The actual date of the publication of each article is that given on its special title-page, and not that of the volume in which it is placed. In many cases papers have been published and largely distributed, several months before their combination into volumes.

CHAS. D. WALCOTT,
Secretary of the Smithsonian Institution


TABLE OF CONTENTS



Number 1 (Publication 1804). Nomenclature of Some Cambrian Cordilleran Formations. 1908. Pp. [Title] + 1-12. Published April 18, 1908.
Number 2 (Publication 1805). Cambrian Trilobites. 1908. Pp. [2] + 13-52, Pls. 1-6. Published April 25, 1908.
Number 3 (Publication 1810). Cambrian Brachiopoda: Descriptions of New Genera and Species. With index. 1908. Pp. [Title] + 53-137, Pls. 7-10. Published October 1, 1908.
Number 4 (Publication 1811). Classification and Terminology of the Cambrian Brachiopoda. 1908. Pp. [Title] + 139-165, Pls. 11, 12. Published October 13, 1908.
Number 5 (Publication 1812). Cambrian Sections of the Cordilleran Area. With index. 1908. Pp. [Title] + 167-230, Pls. 13-22. Published December 10, 1908.
Number 6 (Publication 1934). Olenellus and Other Genera of the Mesonacidæ. With unpaged index. 1910. Pp. [Title] + 231-422, Pls. 23-44. Published August 12, 1910.
Number 7 (Publication 1939). Pre-Cambrian Rocks of the Bow River Valley, Alberta, Canada. 1910. Pp. [Title] + 423-431, Pls. 45-47. Published August, 1910.
Index. Pp. 433-497.

ILLUSTRATIONS



PLATES

TO FACE PAGE
1. Cambrian Trilobites (Bathyuriscus, Albertella, Burlingia, Oryctocara) 42
2. Cambrian Trilobites (Albertella) 44
3. "" (Zacanthoides) 46
4. "" (Neolenus) 48
5. "" (Neolenus) 50
6. "" (Neolenus) 52
7. Cambrian Brachiopoda (Atremata) 118
8. "" (Atremata and Neotremata) 120
9. "" (Neotremata and Protremata) 122
10. "" (Protremata) 124
11. Schematic Diagram of evolution of Cambrian Brachiopoda 140
12. Microphotographs of brachiopod shell sections 164
13. Map of House Range, Millard County, Utah 172
14. West face of Notch Peak, House Range, Utah 173
15. Fig. 1. Eastern side of the House Range south of Marjum Pass, Utah 178
Fig. 2. Ridge east and southeast of Antelope Springs, House Range, Utah 178
16. North side of Dome Canyon, House Range, Utah 182
17. West face of House Range beneath Tatow Knob, Utah 184
18. Lower Cambrian quartzites, Inyo County, California 186
19. Eastern side of Sherbrooke Ridge, British Columbia 207
20. Fig. 1. North Ridge of Castle Mountain, Alberta 209
Fig. 2. Southeast front of Castle Mountain, Alberta 209
21. Mount Stephen, British Columbia, from the north 210
22. Ridges southeast and west of Lake Louise, Alberta 216
23. Cambrian Trilobites (Nevadia) 380
24. "" (Elliptocephala, Olenellus?, Pæpdeumias) 382
25. Cambrian Trilobites (Elliptocephala, Pædeumias) 384
26. "" (Mesonacis) 386
27. "" (Callavia, Holmia) 388
28. "" (Callavia) 390
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
TO FACE PAGE
10. Paradoxides sp. 255
11. Paradoxides sp. 255
12. Olenellus (Holmia) bröggeri Shimer 255
13. Paradoxides harlani 255
14. Nevadia wecksi 257
15. Nevadia wecksi 257
16. Mesonacis mickwitzi 263
17. Mesonacis mickwitzi 263

This work is in the public domain in the United States because it was published before January 1, 1927.


The author died in 1927, so this work is also in the public domain in countries and areas where the copyright term is the author's life plus 80 years or less. This work may also be in the public domain in countries and areas with longer native copyright terms that apply the rule of the shorter term to foreign works.