When I first submitted the idea for A Trio of Triceratops, my editor at Harcourt, Diane D'Andrade, liked it so much she asked me to think of a companion book featuring "A Pair of ? ."
Was there a dinosaur I could use beginning with a "p"? I went back to my dinosaur books and soon came up with the perfect pair of prehistoric pals: A pair of preschool protoceratops playing with puzzles, painting pictures, pasting paper and even pestering papa protoceratops!