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"Bag-like sea creature was humans' oldest known ancestor" Topic


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146 hits since 2 Feb 2017
©1994-2017 Bill Armintrout
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Tango0102 Feb 2017 2:14 p.m. PST

"Named Saccorhytus, after the sack-like features created by its elliptical body and large mouth, the species is new to science and was identified from microfossils found in China. It is thought to be the most primitive example of a so-called "deuterostome" -- a broad biological category that encompasses a number of sub-groups, including the vertebrates.

If the conclusions of the study, published in the journal Nature, are correct, then Saccorhytus was the common ancestor of a huge range of species, and the earliest step yet discovered on the evolutionary path that eventually led to humans, hundreds of millions of years later.

Modern humans are, however, unlikely to perceive much by way of a family resemblance. Saccorhytus was about a millimetre in size, and probably lived between grains of sand on the seabed. Its features were spectacularly preserved in the fossil record -- and intriguingly, the researchers were unable to find any evidence that the animal had an anus…"
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Amicalement
Armand

Personal logo Editor in Chief Bill The Editor of TMP Fezian02 Feb 2017 8:54 p.m. PST

"I have no anus, and I must poo!" evil grin

Tango0103 Feb 2017 10:27 a.m. PST

(smile)


Amicalement
Armand

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