Author: Elana Rubinstein

For fifth-grader Della, paleontology isn’t just a hobby–it’s her entire world. Della is proud to be a dinosaur expert, even if it means losing her only friend, Avery, who cares more about fashion than fossils.

When Della gets the chance to try out a secret high-tech dinosaur hatching device, she couldn’t be more excited. But after Avery’s pink, sparkly jacket gets stuck in the incubator lid, what comes out of the dino egg ends up being much more glamorous than carnivorous. . .

Even for an expert like Della, taking care of this unique prehistoric pet is going to require a little bit of help and lot of luck.

Publisher: Macmillan Publishers (MPS)
Published: 08/25/2026
Pages: 192
Binding Type: Hardcover
Weight: 0.05oz
Size: 9.20h x 6.10w x 1.10d
ISBN: 9781250419040

Review Citation(s):
Publishers Weekly 06/29/2026
Kirkus Reviews 07/01/2026
School Library Journal 07/24/2026 pg. 1

About the Author
Elana Rubinstein is a busy mom by day and a writer by night. In addition to The Big Hatch, she is the author of the Saralee Siegel chapter book series. Her first book, Once upon an Apple Cake, was a National Jewish Book Awards Final-ist.