YA novel, from late 1970s, involves kids, time travel & dinos

When I was in the sixth grade (which would have been about 1980-81), I remember my teacher reading this AWESOME book about some kids that travel through time and end up in a world with dinosaurs, and they had to figure out how to get back home. That's literally all I remember about the book itself. I have been on the hunt for that book for a couple of decades now because I know that I loved the book when Mr. O'Leary read it to us.

I'm not sure that it actually was published in 1981 - it was a book from our school library at the time, so it could have been published earlier than that.

Any thoughts on what it might be?

Tunnel Through Time is about kids who go through a time machine. I read it years ago too, and I do know there are dino's.

Not the right book, but you might like When Dinosaurs Ruled the Basement by William L. DeAndrea or Rex by Kathleen Duey.

It might be The Bunjee Venture by Stan McMurtry published in 1977. It is a great read-aloud.

I loved Tunnel through Time, and it does fit the questioner's description perfectly.

THAT'S IT! Wow - the minute I saw the cover I went back in time myself. That's absolutely the right book! I'm so excited to FINALLY have a name to the memory!

Mud and infiniteletters - Thanks for the recommendation - I'm going to check and see if my local library has those, too!