Tags: Fern.

Regnellites nagashimae is the oldest known fossil belonging to the fern family Marsileaceae. It comes from rocks of the Upper Jurassic or Lower Cretaceous of Japan. The fossils include leaves with visible veins as well as sporocarps.

class
Leptosporangiate fern
division
Pteridophyte
family
Marsileaceae
kingdom
Plant
order
Salviniales

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