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Ptychocarpus unitus, with partial Alethopteris 0.jpg

Dpaul7
Ptychocarpus unitus, with partial Alethopteris
 
Upper Sharp Mountain Mbr-Pottsville Formation of Pennsylvania
Pennsylvanian Period (323.2 million years ago to 298.9 million years ago)
This Ptychocarpus unitus measures 2" long and is on a matrix measuring 1 3/4" by 3 1/4". There's a nice partial Alethopteris on the reverse side.
Alethopteris is a prehistoric plant genus of fossil Pteridospermatophyta (seed ferns) that existed in the Carboniferous period (around 360 to 300 million years ago). It is in the family Alethopteridaceae.
Kingdom: Plantae/Plantae
Division: Tracheophyta/†Pteridospermatophyta
Order: Marattiales/†Medullosales
Family: Marattiaceae/ †Alethopteridaceae
Genus: Ptychocarpus/†Alethopteris
Species: unitas/sp.


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MY FOSSIL Collection - Dpaul7

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