Predecessors of dinosaurs found in Africa

04/30/2013 | Discovery

Scientists say the creatures that preceded dinosaurs probably developed in what is modern-day Zambia and Tanzania. One fossil found in the area, Nyasasaurus parringtoni, a dog-sized animal with a 5-foot-long tail, may be the oldest closest relative to the dinosaur. But, "true dinosaurs first show up about 230 million years ago from what is now Argentina," said study co-author Sterling Nesbitt, a geologist from the Field Museum of Natural History.

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