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Finding a lot of fossil wood this past week. Agates to for carving. The bedrock underneath the gravel at Stillwell Ranch is limestone packed with fossils. Mostly Rudist. Then there are enigma. This stone has the blue infill, I associate with one type of fossil wood preservation. I thought it was a cluster of horn coral initially. But they don't pack up like this. No septa at all. Just finger length long ovals, width of your big toe...........The best detail are the onion layers which are micro crenelated. The end photo seems to have bisected a number of the lobe features. I think they were long and egg shaped un-eroded. With a hollow cavity in the center that was filled with blue & white chalcedony. Chime in if you have a good idear or two of what this is.: