Been meaning to comment on this since I first saw this post! Maybe 20 years ago some country road guy came into my office and said that he found a bunch of "Dinosauer" tracks up in a canyon in Skedattle Mountains, north of Honey Lake, when he was out hunting-showed me some pictures he took and they sure looked like dinosaur trackes to me. So, we went up and took a look, and they were just as impressive as his photo's showed. They were in a large boulder that had broken in half and here were these impressions that looked just like the ones in your pictures-one side indented, the other the reverse. This boulder was pretty big and broke when it fell down the hill. Now we have some areas that contain fossils around here- more mastodon tusks and Pleistocene stuff, not that much in the way actual dinosaur fossils, so this find was pretty interesting.
I'm an archaeologist (and have worked with fossil bones and deposits before-but I'm not an expert), so I called my paleotologists friends over at U of Nevada and they headed right over. We spent the day out analysinig them. I mean something about them just didn't look right, but they sure looked good (I have been looking for pictures I took of of them , but have had no luck. Finially the paleontologist figured out what was wrong-they had five toes not three/four like a dinosaur should have! It seems that these perfect foot prints were just the result of bubbles forming in the mud when the boulder was formed and became exposed when the rock cracked(we have allot of gerothermal activity around here), so it seems logical. But they sure looked good (just like your pictures) , five toes not three/four-you learn something every day, the road guy I think still isn't sure about that! Probably still out there, might be even worth a trip some day!
Five toed Smoke