The Extinction of the Dinosaurs The first step is solving this mass extinction is to ask, were there any others. The answer is a resounding yes. Altogether over time there has been about eight mass extinctions to large land dwelling vertebrates. The most recent was about ten thousand years ago, killing most of the giant mammals like mammoths, mastodons, super-large camels, saber-toothed tigers, and others (Bakker 428). The second step is asking whether or not these …showed first 75 words of 1619 total…

…showed last 75 words of 1619 total…