''Metzgeriothallus sharonae'' is the oldest known liverwort fossil, dating to the Middle Devonian.
It is a simple, thalloid organism. ''M. metzgerioides'' is known from more fragmentary material dating to the Carboniferous of Scotland.
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References
Middle Devonian plants
Mississippian plants
Middle Devonian first appearances
Mississippian extinctions
Metzgeriales
Late Devonian plants
Prehistoric plant genera
Liverwort genera
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