Animals May Have Evolved Vastly Earlier than Fossil Evidence Suggests
Researchers say molecular-clock analysis and older rock constraints push animal origins back by about 200 million years.
5 Articles
5 Articles
Writing Science, 2 Oct (EFE).- Animals could have evolved up to 200 million years before their first appearance in the fossil record, in the Neoproterozoic – between 800 and 700 million years ago – or even before some of the most extreme glaciations in history took place.This is the hypothesis [...] The entry What if the animals emerged 200 million years earlier than the fossil record shows? was first published in HolaNews.
Animals may have evolved vastly earlier than fossil evidence suggests
The earliest animals may have evolved hundreds of millions of years before their first unmistakable fossils appear in the fossil record, according to a new study led by the University of Oxford. The findings, published in Science Advances, suggest animals may have originated deep in the Neoproterozoic Era, even before some of the most extreme ice ages in Earth's history.
An Oxford study questions whether we have interpreted well one of the most important deposits of our remote past.
Animals may have evolved 200 million years earlier than previously thought, new study suggests
The first animals may have appeared on Earth hundreds of millions years earlier than their fossils suggest, a new modeling study suggests. Previously, the earliest fossil evidence of animals dated to around 574 million years ago, during the Ediacaran period (635 million to 538 million years ago). In the new paper, a research team argues that we can't just rely on the spotty fossil record, and suggests that animals first appeared up to 200 millio…
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