Little recognized by the general public, but well known to professionals in the botanical and zoological sciences, we are in the midst of one of the world's great extinction events with animal and plant species dying out due primarily to human activities. Nicely illustrated by Renata Cunha and Phil Miller, "Extinct Animals: An Encyclopedia Of Species That Have Disappeared During Human History" is a compendium of just such animal species as compiled by zoologist, independent researcher and natural history enthusiast Ross Piper. Organized chronologically into seven sections beginning with 'Fewer Than 100 Years Ago' to 'More Than 50,000 Years Ago', each of these individual chapters list now extinct species that ranging from the better known Passenger Pigeon, Great Auk, and Dodo, to the more obscure Horned Turtle, Australian Thunderbird, and Megatooth Shark. Of special interest is the information presented concerning the extinction of the Neanderthal and Homo Erectus (two competing hominid species that having survived for millions of years became extinct within a millennia of encounter Homo Sapiens -- us -- between 10,000 and 12,500 years ago). Enhanced with the inclusion of a Glossary; a Selected Bibliography, a listing of Selected Museums in the United States, Canada, and Worldwide; and an Index, "Extinct Animals" is a remarkable and highly recommended work of scholarship that is fully accessible to the non-specialist general reader, as well as academia.