Metzgeriothallus

Metzgeriothallus Temporal range: Givetian–Lower Mississippian PreЄ Є O S D C P T J K Pg N
Scientific classification
Kingdom:	Plantae
Division:	Marchantiophyta
Class:	Jungermanniopsida
Order:	Metzgeriales
Genus:	†Metzgeriothallus Walton, 1928
Species
M. metzgerioides Walton, 1928 (type) M. sharona VanAller Hernick et al., 2008

Metzgeriothallus sharona is the oldest known liverwort fossil, dating to the Middle Devonian.^[1] It is a simple, thalloid organism. M. metzgerioides is known from more fragmentary material dating to the Carboniferous of Scotland.^[1]

References

1. ^ ^{a b} Hernick, L.; Landing, E.; Bartowski, K. (2008). "Earth's oldest liverworts—Metzgeriothallus sharonae sp. Nov. From the Middle Devonian (Givetian) of eastern New York, USA". Review of Palaeobotany and Palynology 148: 154. doi:10.1016/j.revpalbo.2007.09.002.  edit