Includes bibliographical references (p. 44) and index.; Dr. Seuss's Cat in the Hat shows Sally and Dick how dinosaur fossils are excavated, assembled, and displayed in a museum.;
"Ages 9 up"--P. [4] of cover.; "RL5.5"--P. [4] of cover.; Dinosaurs -- Fiction. Schools -- Fiction. Time travel -- Fiction.
Dinosaurs -- Fiction. Brothers and sisters -- Fiction.