THE LOWER EMBAR OF WYOMING 641 



23. Phosphate like No. 25 1" 



22. Limestone like No. 24 10" 



21. Phosphate like No. 25 3" 



20. Gray, cherty limestone 3' 2 " 



19. Shale, drak-gray to bluish-gray, calcareous, somewhat nodular 23' 



18. Dark phosphate with thin layers of gray phosphate 2' 6" 



In another place the details of this bed (No. 18) were as 



follows: 



Phosphate 8" 



Yellow limestone 4" 



Phosphate 2" 



Yellow limestone 8" 



Phosphate 4" 



Yellow limestone 4" 



17. Light gray, compact limestone, glauconitic in places 4' 



16. Greenish, sandy shale, covered but near the surface (the talus 



was removed in places with picks in order to examine the 



rocks) 12' 



15. Light-gray, compact, even-textured limestone 20' 



14. Like No. 16 29' 



13. Light-gray, coarse-grained, compact, thin-bedded limestone. . 3' 6" 



12. Covered, but the rock in place within a few inches of the 



surface; seems to be of greenish and yellowish shale 73' 



11. Light-purple, very compact limestone 1' 



10. Light-gray, compact limestone 14' 



9. Light-bluish-gray, friable limestone containing many nodules 



of calcite 2' 9" 



8. Light-gray rock composed largely of chert nodules i' 



7. Light-gray, compact limestone; fragments of fossils abundant, 



and in some places these have been dissolved out, leaving the 



rock porous; Orbiculoidea upahensis abundant i' 6" 



6. Light-gray, cherty limestone crowded with small geodes with 



calcite interiors 5' 



5. Dark-gray to black phosphate packed with Orbiculoidea 



utahensis; this is the horizon of the fish teeth, but they are 



rare along the Little Popo Agie 3' 6" 



4. Light-gray, compact limestone containing many bryozoans 



and crinoid stems 1' 



2. Light-gray limestone, in some places almost all chert; usually 



stands in vertical cliffs 11' 



1. Cherty, in some places nodular, thin-bedded, closely- jointed, 



light to dark-gray limestone; mostly covered 14' 



Total 37S ' n" 



The Tensleep contact is assumed to be at the top of a few feet of thin- 

 bedded sandstone. 



