Contents

04 January 2019
Vol 363, Issue 6422

About The Cover

Cover image expansion

COVER Artist's rendering of an early morning in Silesia, Poland, during the Late Triassic. The elephant-sized dicynodont Lisowicia bojani, a distant cousin of present-day mammals, plods slowly through the woodland as gracile theropod dinosaurs search for prey. In the foreground, the mammalian ancestor Hallautherium moves cautiously along a branch. Lisowicia, the largest known dicynodont, had upright limbs and walked with an erect gait, similar to modern mammals. See page 78.
Illustration: Julius Csotonyi