Golden Valley Formation/Chadron (Chalky Buttes Member) contact
19. 20. 21. 22. 23. 24. 25.
Chalky Buttes Member
26. 27. 28. 29. 30. 31. 32. 33.
Brule Formation
34. 35. 36. 37. 38. 39.
More >
Return