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

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.

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[Hernick2008-1] 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.