Sphenopteris spiniformis Fern (5.2 cm) - Poland - Carboniferous

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Good detail both sides. Sphenopteris spiniformis seed fern from Upper Silesia, Poland. Dates to the Carboniferous Period (Westphalian "B") - Circa 310 million years old.


Stunning detail.


Nodule: 4.8 cm x 5.2 cm x 0.7 cm