Extinct MadagascarThe landscapes of Madagascar have long delighted zoologists, who have discovered, in and among the island's baobab trees and thickets, a dizzying array of animals, including something approaching one hundred species of lemur. Madagascar's mammal fauna, for example, is far more diverse, and more endemic, than early explorers and naturalists ever dreamed of. But in the past 2,500 or so yearsa period associated with natural climatic shifts and ecological