Litostroma

Litostroma is a genus of marine alga that may be a red, although green and brown affinities have also been proposed.^[2] It consists of single-cell-thick thalli that reached about 6 mm in diameter and 140 μm thickness.^[1]

Litostroma Temporal range: Pennsylvanian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Clade:	Viridiplantae
Division:	incertae sedis
Genus:	Litostroma Mamay, 1959[1]
Species
L. oklahomense Mamay, 1959[1]

References

1. Mamay, S. H. (1959). "Litostroma, a New Genus of Problematical Algae from the Pennsylvanian of Oklahoma". American Journal of Botany. 46 (4): 283–292. doi:10.2307/2439480. JSTOR 2439480.
2. Taylor, Thomas N; Taylor, Edith L; Krings, Michael (2009). Paleobotany: the biology and evolution of fossil plants. ISBN 978-0-12-373972-8.