The Dinosaur Expert, written by Margaret McNamara and illustrated by G, Brian Karas. Schwartz & Wade, Random House. 2018. $23.99 ages 6 and up

"She's a plant eater. And the small, fierce one is an Allosaurus. The Allosaurus can move very fast. But the Barosaurus has a super-powerful tail," continued Kimmy. "She'd use it to protect her baby." "You know a lot about dinosaurs," said Jake. "I love fossils," Kimmy said. "I want to be a scientist when I grow up." "Girls aren't scientists," Jake said. And Kimmy stopped talking."

This is the fourth book in the Mr. Tiffin series about his classroom and the experiences they share.

Kimmy loves fossils and all there is to learn about them. She is especially fond of dinosaurs and has much to offer when the class goes on a trip to the museum. Kimmy is extremely knowledgeable and more than willing, in a very kind and fitting way, to tell her school mates what she has learned. Jake's unkind treatment and his assertion that 'girls aren't scientists' hurts Kimmy's feelings as one might expect. She makes the decision not to say anything more.

If you have already met Mr. Tiffin, you will know that he is the kind of teacher all children should have at some point in their school life. He quickly realizes that something has gone wrong. He introduces Kimmy to an exhibit which displays the Gasparinisauria, a dinosaur named for famed paleontologist Zulma Nélida Brandoni de Gasparini. Jake is taken aback, but recognizes it as pretty amazing. Kimmy is thus encouraged to share everything else that is pertinent to their visit and the specimens they are seeing. She readily admits that she would like to follow in Ms. Gasparini's footsteps. Mr. Tiffin is certain she will do that.

Brian Karas uses gouache, matte medium, and pencil on paper to create his signature artwork. The pages are filled with expressive, appealing characters and lively action. Dinosaur fans will be thrilled to see some of their favorite creatures up close and personal, and are likely to help Kimmy as she shares her expertise, by adding what they know as well.  The endpapers are sure to garner attention, as will the two-page addition of a list of Kimmy's 'favorite paleontologists', beginning with Mary Anning and all female.

This is a terrific addition to the series that includes: How Many Seeds in a Pumpkin? (2010), The Apple Orchard Riddle (2013) and A Poem in Your Pocket (2015).  All are published by Penguin Random House, and worth a close look.