Ikaria wariootia

Earliest Bilaterian

The accumulation of small heritable changes within populations over time.

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Ikaria wariootia

#1  Postby Spearthrower » Mar 24, 2020 3:42 pm

https://www.pnas.org/content/early/2020 ... 2001045117

Discovery of the oldest bilaterian from the Ediacaran of South Australia

Significance

The transition from simple, microscopic forms to the abundance of complex animal life that exists today is recorded within soft-bodied fossils of the Ediacara Biota (571 to 539 Ma). Perhaps most critically is the first appearance of bilaterians—animals with two openings and a through-gut—during this interval. Current understanding of the fossil record limits definitive evidence for Ediacaran bilaterians to trace fossils and enigmatic body fossils. Here, we describe the fossil Ikaria wariootia, one of the oldest bilaterians identified from South Australia. This organism is consistent with predictions based on modern animal phylogenetics that the last ancestor of all bilaterians was simple and small and represents a rare link between the Ediacaran and the subsequent record of animal life.


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Re: Ikaria wariootia

#2  Postby The_Piper » Mar 24, 2020 8:10 pm

That's really cool! A very interesting time for life on Earth. I'm glad we're learning a lot more about it than we did even 10 years ago.
I must comment that Ikari Warriors was one of my favorite Nintendo games back in the day. Now it's been immortalized. :lol:
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Re: Ikaria wariootia

#3  Postby theropod_V_2.0 » Mar 24, 2020 10:34 pm

Stupid cool!

Oh how I would have liked to been involved in the field work. I bet there wasn’t a jacket in sight. Even a bone digger appreciates this. Well, this one does.

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Re: Ikaria wariootia

#4  Postby Calilasseia » Mar 25, 2020 12:16 pm

Just snaffled a copy of the PDF. Will digest later. :)
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Re: Ikaria wariootia

#5  Postby chairman bill » Mar 25, 2020 3:52 pm

Satan put them there to test our faith in the Lard*

* I wrote this so supernaturalist fuckwits won't have to.
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Re: Ikaria wariootia

#6  Postby Made of Stars » Mar 26, 2020 11:49 am

Very cool find from a very cool place.
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