5792 x 7428 px | 49 x 62,9 cm | 19,3 x 24,8 inches | 300dpi
Aufnahmedatum:
20. März 2025
Weitere Informationen:
Fossil Ferns, St. Clair, PA Neuropter ovata, Pecopteris and Cordaites Species These fossil ferns are preserved in brilliant white impressions on dark shale, a result of natural bleaching by pyrophyllite-rich hydrothermal fluids. These Carboniferous-age plants thrived in lush swamp forests over 300 million years ago. Neuropteris and Pecopteris represent seed ferns with delicate, symmetrical fronds, while Cordaites were ancient gymnosperms with long strap-like leaves. St. Clair is world-famous for these striking plant fossils, prized for both scientific value and visual contrast.
