Help with identifying a children’s book

Anna

I have a pretty random question. When I was in elementary school, our librarian read us a book about a little girl who lived in a cave on a cliff in dinosaur times. She rode a pterodactyl, and she ate a giant egg for breakfast every morning. It had a comical picture of her with this egg that was as big as she was, and I want to say that she daintily ate it with a spoon. It even had one of those egg rest like you see with tea-time stuff. I was moving a decorative egg that my husband had, and that book randomly popped in my head. I’d like to get it for my daughter, but I can’t remember the name, and google has too many dinosaur kid’s books to be really helpful. Does anyone have any ideas?!

Thanks!