Documents Virus Fossils James Laidler. History of Prokaryotic Fossils Walcott 1915 - Pre-Cambrian...

Slide 1 Virus Fossils James Laidler Slide 2 History of Prokaryotic Fossils Walcott 1915 - Pre-Cambrian cyanobacteria (~ 600 - 700 Mya) Tyler and Barghoorn 1954 - Pre-Cambrian…