. . "Juvenile works"@en . . "Juvenile works" . "A brief introduction to a number of extinct mammals that lived from the time of the dinosaurs to the late Ice Age." . "A brief introduction to a number of extinct mammals that lived from the time of the dinosaurs to the late Ice Age."@en . . . . . "Mammals of long ago" . "Mammals of long ago"@en . . . "Mammals, Fossil Juvenile literature." . . . . "Mammals, Fossil." . .