Dinosaurs get down and boogie at a Saturday all-night bash: Shields's rhymes and Nash's drawings create an extravaganza of prehistoric fun. Saturday evening the dinosaurs primp and preen, preparing for the big dance. Then they go out to stomp their feel crank their guitars, and dance so hard they create the first earthquake, upsetting volcanoes into a fireworks display. The party lasts until the Cenozoic dawns, when all the dinosaurs settle in for some sleep. Witty and imaginative, the poem has a rhythm that makes cumbersome multi-syllable dinosaur names roll off the tongue--good read-aloud material. The illustrations match the text's exuberance with drawings of boisterously striped and polka-dotted dinosaurs, who play bongos, dance congas, and kick up their heels.