Plants colonized Earth 100 million years earlier than previously thought

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Gawdzilla Sama
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Plants colonized Earth 100 million years earlier than previously thought

Postby Gawdzilla Sama » Tue Feb 20, 2018 10:27 am

(To be honest, I first read that as "Planets"...)
Plants colonized Earth 100 million years earlier than previously thought

Date: February 19, 2018

Source: University of Bristol

Summary: A new study on the timescale of plant evolution has concluded that the first plants to colonize the Earth originated around 500 million years ago -- 100 million years earlier than previously thought.

For the first four billion years of Earth's history, our planet's continents would have been devoid of all life except microbes.

All of this changed with the origin of land plants from their pond scum relatives, greening the continents and creating habitats that animals would later invade.

The timing of this episode has previously relied on the oldest fossil plants which are about 420 million years old.

New research, published today in the journal Proceedings of the National Academy of Sciences, indicates that these events actually occurred a hundred million years earlier, changing perceptions of the evolution of the Earth's biosphere.

Plants are major contributors to the chemical weathering of continental rocks, a key process in the carbon cycle that regulates Earth's atmosphere and climate over millions of years.

The team used 'molecular clock' methodology, which combined evidence on the genetic differences between living species and fossil constraints on the age of their shared ancestors, to establish an evolutionary timescale that sees through the gaps in the fossil record.


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Re: Plants colonized Earth 100 million years earlier than previously thought

Postby ƵenKlassen » Wed Feb 21, 2018 3:52 am

Interesting. . . Also, it's nice to see you on these forums too, Gawdzilla Sama.

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Re: Plants colonized Earth 100 million years earlier than previously thought

Postby Gord » Wed Feb 21, 2018 9:17 pm

But were they purple or green?
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Re: Plants colonized Earth 100 million years earlier than previously thought

Postby Gawdzilla Sama » Wed Feb 21, 2018 9:57 pm

Gord wrote:But were they purple or green?

It was a one eyed one horn flying purple
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Re: Plants colonized Earth 100 million years earlier than previously thought

Postby Gord » Wed Feb 21, 2018 10:09 pm

Gawdzilla Sama wrote:
Gord wrote:But were they purple or green?

It was a one eyed one horn flying purple
People eater

https://www.livescience.com/1398-early- ... gests.html
"Knowledge grows through infinite timelessness" -- the random fictional Deepak Chopra quote site
"Imagine an ennobling of what could be" -- the New Age BS Generator site
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Re: Plants colonized Earth 100 million years earlier than previously thought

Postby Gawdzilla Sama » Wed Feb 21, 2018 10:23 pm

Signs of cholorophyll have been found back 500,000,000 as well, so the jury's out.
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Re: Plants colonized Earth 100 million years earlier than previously thought

Postby Major Malfunction » Thu Feb 22, 2018 7:10 am

Give or take...
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