Maybe a chunk of something cyanobacterial bounced off the Precambrian Earth and came back in again later mixed with other meteroritic material I find it difficult to believe that cyanobacteria evolved independently in the primal solar and interplanetary material or elsewhere around here in space.

Here is a picture, I think, of what they found ...

http://www.panspermia.org/magneto.htm

Michael

"NASA's Richard Hoover announced evidence of a fossilized cyanobacterial mat in the Orgueil carbonaceous meteorite. His pictures of forms in the meteorite were indistinguishable from known, Earthly fossilized cyanobacteria such as phormidium tenuissimum. The images from Orgueil were taken in July, 2004, using Environmental- and Field Emission Scanning Electron Microscopy at NASA's Marshall Space Flight Center in Huntsville, Alabama. "