"Fifth-grader Ronnie and Ms. Lernin tour the Cenozoic Era, where they encounter three kinds of mammals--monotremes, marsupials, and placental mammals--and other animals with which they shared the Earth."--Provided by publisher.
Details
ISBN:9781419736247
ISBN:1419736248
Physical Description:118 pages : chiefly color illustrations, color chart ; 24 cm.