A gentle Triceratops forgets to stay with the herd and has to use his sharp horns to fight a Tyrannosaurus.

Dinosaur's Day 2009, Turtleback Books, New York, NY

ISBN-13: 9780613324663

Bound for Schools & Libraries edition

Hardcover

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A Dinosaur's Day 2000, DK Publishing (Dorling Kindersley), New York, NY

ISBN-13: 9780789466341

Trade paperback

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Dinosaur's Day 2000, DK Publishing (Dorling Kindersley), New York, NY

ISBN-13: 9780789466358

Hardcover

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