Steven C Minkin Paleozoic Footprint site
The most important trace-fossil site of its age in the world (Pennsylvanian, Westphalian A)
Millipede trackway
Horseshoe crab trarkway
Jumping flightless insect trarkway
Reptilian trarkway
Amphibian trackway
Fish-fin trace (two of them)
Insect wing impression
These trace fossils (the impression of wings is actually a body fossil), and thousands of others, were preserved in a 313 million year old tidal flat in central Alabama..
The site and related subjects are described in this book:
Which you can buy from indie bookstores
https://www.indiebound.org/book/9780817358440
Or from other places
https://www.amazon.com/Footprints-Stone-Fossil-Coal-Age-Tetrapods/dp/0817358447/ref=sr_1_1?s=books&ie=UTF8&qid=1469797628&sr=1-1&keywords=%22footprints+in+stone%22#nav-top
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