Eospermatopteris

Eospermatopteris, genus of extinct plants known from fossil stumps discovered in the 1870s near Gilboa, New York, U.S. Eospermatopteris trunks were discovered upright, as they would have grown in life, and occurred in dense stands in the marshy lowlands near an ancient inland sea. However, only the lowermost 0.5 to 1.5 metres (2 to 5 feet) of Eospermatopteris trunks were preserved, and the plant’s branches and foliage remained unknown for more than 130 years. These...