Scientists from the Department of Earth, Atmospheric, and Planetary Sciences at Massachusetts Institute of Technology wrote “Insights into cyanobacterial fossilization in Ediacaran siliciclastic environments” for the July 2016 issue of Geology. In the article, the researchers used Spectrum Labs’ Standard RC dialysis tubing to separate cyanobacteria from sand.

The scientists’ experimented on cyanobacteria to “identify conditions most conducive to the development of smooth, shape-preserving mineral coatings” and suggested that conditions during the Proterozoic optimally preserved fossilized microbes.

Abstract: Ediacaran sedimentary successions are noted for the preservation of microbes and microbial textures on the surfaces of sandstones and siltstones. Although microorganisms have been preserved in coarse-grained siliciclastic sand throughout geologic history, the exceptional preservation of microbes in Ediacaran sediments suggests the potential for a unique taphonomic window. Here, we identify conditions conducive to the fossilization of filamentous cyanobacteria growing in the presence of siliciclastic sand and demonstrate that the sheaths of filamentous cyanobacteria can become coated by clay minerals within days under oxic conditions. Click here to read the article.


Spectrum Labs’ Standard Grade Regenerated Cellulose (RC) is a clear, flexible and sturdy dialysis membrane with a “looser” molecular selectivity. This economical membrane is ideal for a broad range of applications in which there is a significant size difference between the MW species being separated.

doi: 10.1130/G37791.1