Nonliving
Unidentified Upper Permian Escape Trace
 
Fugichnia (Trace Fossils)



Trace Fossils
 


Research Gate
https://www.researchgate.net/figure/Core-photographs-showing-depositional-characteristics-of-Lithofacies-F-2-A-Shows_fig8_312249335

Unidentified Upper Permian Escape Trace Collectibles Gallery
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