disappearance of the dinosaurs 65 million years ago allowed the mammals to increase their size, according to a new study published in the journal Science. After carefully reviewing a number of fossils, the researchers concluded that the extinction of the dinosaurs helped mammals weighing between one and ten kilograms reached, in some cases, the 17 tons.
specialist scientific topics of the BBC, Neil Bowden explained that all this happened for 25 million years, a relatively short period in geological terms.
"There was a time when the hornless rhinoceros and called protoelefantes Deinotherium Indrucotherium and dominated the world, "says the study.
Scientists say that during that time, the ecosystem was able to" reprogram "quickly to meet the needs of these animals, whose size increased dramatically.
Brake However
growth stopped there, because warm-blooded mammals are not able to maintain a constant body temperature.
may, while the animals occupied the continent, the area of \u200b\u200bland and food have become scarce also, say researchers in Science.
giant mammals lived only until few thousand years ago in the form of woolly mammoths.
These creatures could be gone by the existence of other mammals are much smaller than the hunted: humans. (BBC)
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