Nate Evans is the New York Times best-selling author/illustrator of more than forty children's books, including Ponyella with Laura Numeroff. His most recent picture book is Cookiesaurus Rex, co-authored with Amy Fellner Dominy. Tyrannosaurus Ralph is his first middle-grade graphic novel, with artwork by his brother, Vince Evans. Before turning to his true love—children's books—Nate was a greeting card artist. Nate is also a seventh-grade teacher and loves to share his passion for books with his students.

Stephanie Gwyn Brown experiments with traditional and digital media in her Los Angeles studio. She is an author, painter, poet, illustrator, designer, aspiring puppeteer-musician, and award-winning experimental animator. When not tending her backyard menagerie, she may be found at the Natural History Museum, in a public library, or in a classroom. Stephanie is the author of Professor Aesop's the Crow and the Pitcher, and Bang! Boom! Roar! A Busy Crew of Dinosaurs.

Jessica Gibson is an illustrator from Michigan with a love for animals and nature, traveling, and everything cute. She has loved drawing ever since she was little, and was raised on a healthy diet of reading lots of books. Jessica has worked with various publishers and illustrated books such as Very Lulu and Cookie & Milk. When she not working, she enjoys crafting, cooking, and snuggling with her cats.