Reply To: Pennsylvanian ?seed / ?trace, in sandstone, likely fluvial, likely Illinois

[Dr. Ronny Maik Leder]

@asa-kaplan, Hi Asa, upon first look it appears like a fossil Carya, but that would not match with Pennsylvanian age, so I suggest that you might have a pseudofossil here.

best

 

Ronny