There was a point in the stream where the flood layer became much thicker. Most of this series was taken in that area. You can see a leaf in the first image which gives you something of known size to compare to. Some were reminiscent of petroglyphs.
You can also see where veins of different color mud run through.
The most interesting impression in this area was this image of a an outline of something that was fairly large. Again, the leaf gives you a standard of comparison. The impression itself was about two feet long and looked like it could possibly have been a shell, but if it was, it would have been far larger than most any shelled creature living today. Clearly seen are some spiral indentations much like those seen on a turret snail, but turret snails are often only an inch long.
I also happened across one rock with the impressions of what looked like a group of barnacles in that area.
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