ls lens from upper LN

This relatively thick but not very extensive lens of limestone from the
transitional interval between the bioclastic shale in the upper Lake
Neosho and the Worland Limestone was probably deposited in a small
scour scooped out of the sea floor by storm waves. The top and bottom
seem to approximate the original contacts, but left and right sides have
been truncated. The limestone contains encrusting algal lamination
(upper left) around a clast that was tumbled about on the sea floor, and
the matrix is thoroughly bioturbated. The close-up (area in rectangle)
shows geopetal lime mud accumulations in shells that indicate the
original "up" direction for the sample.

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