Did you know that North America had its own species of zebra? Or that there was a wolf-like carnivorous mammal -- with hooves? And there once was a horned rodent whose corkscrew-shaped burrows are still visible today? If this sort of thing interests you then you will enjoy Donald Prothero's book, After the Dinosaurs: The Age of Mammals (Bloomington, IN: University of Indiana Press, 2006).
With the exception of birds, dinosaurs became extinct 65 million years ago when a giant bolide crashed into the earth just off the Yucatan peninsula. This extinction left thousands of niches open for other…
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