Mariopteris, most likely Mariopteris nervosa, a liana-type seed fern from the early Carboniferous.
Conifer cone from Poland.
Middle-Pennsylvanian Asterotheca miltoni from Mazon Creek, IL, USA.
Germany Valley, West Virginia. Ordovician carbonates with fossils.
Bedding plane of green siltstone (to very fine sandstone), showing numerous life traces.
Exact provenance unknown
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