Sichuan Today

The eastern part of Sichuan Province is fringed by mountains and has a warm, humid climate. The western part is a misty and cool highland zone. The Yangtze River, China's longest waterway, flows through Sichuan.

Tail spikes were for self-defense

Tail spikes were for self-defense

Small

ARMOR PLATES

along each flank

U HUAYANGOSAURUS

Small

ARMOR PLATES

along each flank

U HUAYANGOSAURUS

This early stegosaur had thick bony plates running down the length of its back, and spikes grew at the end of its tail. It had front teeth, and its long forelegs were also unusual—later stegosaurs had short front limbs and longer back legs.

. Neck was about 50 ft (15 m) long in an adult, and would not have been held much higher than the shoulder

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