Page:Walcott Cambrian Geology and Paleontology I.djvu/13

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ILLUSTRATIONS
ix
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
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