27 November 1998
Vol 282, Issue 5394

About The Cover

Cover image expansion

COVER A carpel-bearing stem of a Jurassic angiosperm (enlarged about 5.5 times), Archaefructus gen. nov., from the lower Yixian Formation near Beipiao, Liaoning Province, northeast China. Carpels enclosing ovules define the angiosperms and are preserved in this fossil. The age of this fossil pushes back the origins of angiosperms by about 20 million years. See page 1692 [Photo: David Dilcher and Ge Sun]