Crenulopteris Acadica - Mazon Creek Fossil

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Crenulopteris Acadica 

Measurements: ~4" long x 3" wide x 1-1/4" deep 

Location: Mazon Creek,  Illinois

Time Period: ~307 MYO

More Information

This group name of at least 25 species includes foliage that produces spores on the underside of their leaves. Some plants were ground-dwelling and others may have been epiphytes. The tree form, Psaronius, grew to heights of about 35 feet and in the drier areas of the swamp.