Back to the Jurassic

"3 kids accidentally travel 65 million years into the past, are taken in by a dinosaur and must receive a missing piece of their time machine to get home."

Ernie, Julia, and Max accidentally start a time-machine and find themselves back in time 65 million years, where they are adopted by a doting dinosaur mom and a rambunctious dinosaur brother while, back in the present day, their parents plot their rescue.