Ironstone Concretion Neuropteris Seed "Fern;" collected at Mazon, IL. ~4" in length. Grew as vines, shrubs and trees that reached 50 feet in height. One of the most widespread of all Pennsylvanian Epoch seed ferns. A gymnosperm from the Carboniferous Period, some 300 million years ago. Specimen courtesy of Penn State University Museum.
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Details
Creative#:
TOP22085760
Source:
達志影像
Authorization Type:
RM
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須由TPG 完整授權
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N/A
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No
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No
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