20 August 2004
Vol 305, Issue 5687

About The Cover

Cover image expansion

COVER This exquisitely preserved fossil from Spaniard's Bay, Newfoundland, is an example of the oldest known complex life forms on Earth. Frondlets 1 to 5 cm long with fractal-like branching (left) were combined as modules to form decimeter-to meter-scale frondose, plumose, and bush-shaped organisms that dominated marine ecosystems 575 to 560 million years ago. See page 1141. [Photo: G. Narbonne]