JILL McDONALD is the Missouri-based author-illustrator of the Hello, World! nonfiction children's book series. Her cheery and colorful art can be found on clothing, fabric, bedding, stationery, puzzles, and games and in a variety of books for babies and toddlers. See more of her work at jillmcdonalddesign.com and follow her on Instagram at @missjillmcdonald.

"A kids' guide to dinosaurs and the Mesozoic era"--