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Show APPENDIX E.- PALEONTOLOGY. 407 N, B. The colours on the map of the travelled route Blue Carboniferous limestone. Green Cretaceous formation. Yellow Tertiary formation. ( In some places not indicated by colour.) Black Coal- beds. Bed Metamorphic rock. .* On the Great Salt Lake map are- Bed Metamorphic rock. Blue Limestone. Yellow Sandstone and conglomerate beneath the limestone. NOTES UPON SOME OF THE FOSSILS COLLECTED ON THtf R# UTE FROM THE MISSOURI RIVER TO THE GREAT SALT LAKE, AND IN THE VICINITY OF THE LATTER PLACE, BY THE EXPEDITION UNDER THE COMMAND OF CAPTAIN HOWARD STANSBURY, T. E. THE species described in the following paragraphs are either from limestone of the carboniferous period or from strata nearly associated, and which, from their character and relations, are clearly of the same age. The other fossils of the collection consist of a few cretaceous species, and of numerous fragments of bones from the tertiary formation. The brachiopods were collected to the eastward of the Salt Lake region, and the corals are abundant in the limestone to the west and north- west of the Salt Lake. The few acephala are from argillaceous beds between Fort Laramie and the Salt Lake. COBALS.- CYATHOPHYLLIDE*. FAVTPHYLLUM? RUGOSUM, ( n. sp.) PLATE I. Fio. 1a ASD 1 b. Cells deep; structure of the centre unknown; external portion cellular, with transverse septas and vertical intermediate dissepiments, giving a columnar structure. |