Beginning of photosynthesis using chlorophyll pigments

Range ~1.8 Billion years ago
Organism Biosphere
Reference Duursma EK, Boisson MPRM, Global oceanic and atmospheric oxygen stability considered in relation to the carbon-cycle and to different time scales. Oceanologica Acta (0399-1784) (Gauthier-Villars), 1994 , Vol. 17 , N. 2 , P. 117-141 link p.120 left column bottom paragraph
Comments P.120 left column bottom paragraph: "About 1.8 billion years ago, photosynthesis started using chlorophyll pigments. This occurred first in water systems below a water column of about 10m, out of reach of the continued high level of hazardous UV radiation, which was absorbed by this water layer."
Entered by Uri M
ID 116087