46 C. M. Wheatley on Mesozoic Red Sandstone and 
layer, but the more perfect bones are found at the bottom of the 
bed where they are collected together forming from two to three 
inches of the layer, a seam of white or pink carbonate of lime 
underlies them and is from 4 to $ inch in thickness. Under this 
is a very thin seam of black carbonaceous matter, which is 
grooved and polished like slickensides, evidently showing great 
disturbing force since the deposition of the bed. 
he material composing the bone bed is formed almost entirely 
of the remains of Cypris. No Estherias, Myacites, coprolites or 
fish-remains, have been observed associated with the Saurian 
bones in many tons of the shale carefully broken up and exam- 
ined. . 
Above the bone bed is about 6 inches of bituminous shale 
with Estherias and coprolites, over this from 5 to 6 feet of hard, 
fine-grained sandstone with plants. The bed is underlaid by 
ten inches of shale with clay concretions which are mostly geodes 
containing yellow pulverulent oxyd of iron, and under this a 
compact, fine-grained red shale from six to seven feet to the 
bottom of the Tunnel. 
without disturbing their sem It is remarkable that while 
the black bituminous shales have afforded but few Saurian teeth, 
and none have as yet been discovered in the “bone bed,” so 
many should have been collected together and deposited in this 
ate cs 
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