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.
Bedding plane of green siltstone (to very fine sandstone), showing numerous life traces.
Exact provenance unknown
Mississippian-aged Madison Group limestone, Bridger Range, Montana.
Obverse of this sample: gigapan.com/gigapans/185784
Cretaceous deep water clastics.
Obverse of this sample: gigapan.com/gigapans/185276
3D model of this sample: sketchfab.com/models/7fe94fbacda948beaae4737afb2f589c
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