Later On

A blog written for those whose interests more or less match mine.

This Ancient ‘Mass Death’ Offers a Glimpse Into Early Tetrapod Life on Land

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Fascinating description of the analysis that derived so much knowledge from a lucky find. Becky Ferreira reports in Motherboard:

The history of life on Earth is filled with tales of intrepid organisms that broke into new territories and niches to secure an evolutionary edge.

One of the most dramatic examples is the colonization of land by aquatic tetrapods, a giant leap that enabled the emergence of countless species, including humans. Given that we owe our very existence to this bold move, scientists have long been fascinated by how our tetrapod ancestors pushed out of the sea to become “part of that world,” to channel The Little Mermaid.

Research published Wednesday in Nature sheds new light on this pivotal transition. A team led by Sophie Sanchez, an evolutionary biologist based at Uppsala University in Sweden, studied the remains of at least 20 individuals from the early Acanthostegatetrapod clan, preserved in what scientists called a “mass-death deposit,” discovered in Greenland.

Dating back 365 million years to the Devonian epoch, this group was likely swept away by a sudden flooding event that left them stranded the in isolated pools. These temporary safe havens eventually dried up, killing the exposed animals en masse. . .

Continue reading.

Amazing that a fairly large contingent of the US reject the theory of evolution. Not a good sign, I would say. That is, if one is looking for positive signs about the state of our nation, this would not, IMO, be a positive sign.

Written by LeisureGuy

7 September 2016 at 11:24 am

Posted in Evolution, Science

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