and there are some Halymenites major. I saw no Placenticeras or other fossils except those mentioned. The formation is practically the same as at Fossil Creek, gray sandstone containing numerous ironstone concretions, some several feet in diameter, the formation having a tendency toward forming an escarpment on the west side of the ridge and a gentle slope on the east side.
Ft. Collins, Oct. 9, 1907
Started for mouth of Owl canyon at 7:55 (25 minutes late on account of slowness of livery man) with team and driver from Mt. Ave. stable. Took the road running north from La Porte, following the Niobrara ridge most of the way. Found Benton formation mostly covered in a valley west of Niobrara, but outcropping in places as a calcareous sandstone just below Niobrara limestone, indeed forming a trans-
