Biogenesis as an evolutionary process [letter].
The earliest fossil stromatolites present evidence of a complex ecosystem of photosynthetic organisms.  Because the origin of present life can be dated within a few hundred million years prior to these fossils, their complexity poses a problem.  A heuristic model outlines the first radiation leading to the universal ancestor.
Morowitz
H J
HJ
Biology Department, George Mason University, Fairfax, VA 22030, USA.
Deamer
D W
DW
Smith
T
T
D005075:Biological Evolution; D002477:Cells; D005580:Fossils; D046911:Macromolecular Substances; D008962:Models, Theoretical; D000069497:Origin of Life
D046911:Macromolecular Substances