"Fossils show ancient primates had grooming claws " Topic
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Tango01  | 17 Aug 2018 4:18 p.m. PST |
…as well as nails. "Humans and other primates are outliers among mammals for having nails instead of claws. But how, when and why we transitioned from claws to nails has been an evolutionary head-scratcher. Now, new fossil evidence shows that ancient primates -- including one of the oldest known, Teilhardina brandti -- had specialized grooming claws as well as nails. The findings overturn the prevailing assumption that the earliest primates had nails on all their digits and suggest the transition from claws to nails was more complex than previously thought. "We had just assumed nails all evolved once from a common ancestor, and in fact, it's much more complicated than that," said Jonathan Bloch, study co-author and Florida Museum of Natural History curator of vertebrate paleontology at the University of Florida…"
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Amicalement
Armand
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| Cacique Caribe | 22 Aug 2018 2:31 p.m. PST |
Grandpa, is that you? :) Dan |
| Tango01 | 28 Aug 2018 3:31 p.m. PST |
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