silicification Archives - Astrobiology

Divergence time and Marine silicon concentration for phytoplankton that may contain SITs-like or SITs -like proteins: Decimals near ancestral nodes indicate posterior probabilities. Solid red dots represent fossil calibration points, gray bar represents 95% confidence intervals, and solid black dots represent estimated divergence time by molecular clocks. 95% confidence intervals are shown here for only some nodes, Some solid points are not digitally labeled when their posterior probability is less than 0.5. Different colors in the background represent different geological periods. The diagram shows the representation of each class group. The graph below shows DSI concentrations of different geological ages, modified from Conley et al. (2017) and Siever (1991). -- biorxiv.org

Biochemistry & Organic Chemistry, Microbiology & Virology, Origin & Evolution of Life, Status Report

Silicification of Cyanobacteria

by Keith CowingMay 27, 2024May 27, 2024

The ability to use dissolved silicon has been found in various oceanic phytoplankton, including eukaryotic diatoms and prokaryotic cyanobacteria.