08 January 2010
Vol 327, Issue 5962

About The Cover

Cover image expansion

COVER Corals such as this 150-million-year-old colony of Thecosmilia trichotoma (with oyster Actinostreon attached) from southern Germany formed reefs during most of the Phanerozoic eon. These reefs harbored tremendous biodiversity that was subsequently exported to non-reef habitats. See page 196. Photo: Antje Dittmann and Carola Radke/Museum für Naturkunde, Berlin