Clear as Mud: How Tiny Plants Changed the Planet, 488 Million
Years Ago, California Institute of Technology, January 28, 2021
The paper is:
Zeichner, Sarah S. and Nghiem, Justin and Lamb, Michael P. and
Takashima, Nina and de Leeuw, Jan and Ganti, Vamsi and Fischer,
and Woodward W. (2021) Early plant organics increased global
terrestrial mud deposition through enhanced flocculation.
Science, 371 (6528). pp. 526-529. ISSN 0036-8075
Note: The paper's summary says 450 million years ago, not
488 million years ago as stated in the press release.
Yours,
Paul H.