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A nearby rock showing fossil mud ripples and some kind of inclusion or indentation. This illustrates that ripples don't usually look like tracks, and that the siltstone did preserve a lot of detail.
A4_FossilRipples.jpg (835 Kb) (under photos/17/0703-0825_WyomingVanEclipse/0817_SeminoeAndPathfinder/)
By Alan Silverstein, ajs@frii.com (page updated Tue Mar 10 18:16:39 MDT 2026)