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Originally posted by tabibito
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They originated in the Early Cambrian and went extinct during the Permian-Triassic Extinction event (thought to be the worst), so they were around for over a quarter of a billion years (give or take a few weeks).
I'm always still in trouble again
"You're by far the worst poster on TWeb" and "TWeb's biggest liar" --starlight (the guy who says Stalin was a right-winger)
"Overall I would rate the withdrawal from Afghanistan as by far the best thing Biden's done" --Starlight
"Of course, human life begins at fertilization that’s not the argument." --Tassman -
By the evidence as far as extinction events we are experiencing number 7 now.Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.Comment
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It's the Quaternary extinction, listed as the sixth. So far its only tens of thousands of years in progress.Originally posted by shunyadragon View Post1Cor 15:34 Come to your senses as you ought and stop sinning; for I say to your shame, there are some who know not God.
.⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛
Scripture before Tradition:
but that won't prevent others from
taking it upon themselves to deprive you
of the right to call yourself Christian.
⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛Comment
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I realize they are close, but I would call this current extinction different from the Quaternary extinction, because the cause is distinctly different, human impact of over population plus human caused global warming,Originally posted by tabibito View Post
The Quaternary extinction actually began 130,000 years ago with the natural climate change. The emphasis as to whether climate change or human cause by Neolithic humans is controversial. Humans may have had an impact as their numbers decreased recently below the healthy survival limits of the populations, but by the evidence most of the megafauna was already doomed with decreased populations.Last edited by shunyadragon; 02-15-2023, 10:47 PM.Glendower: I can call spirits from the vasty deep.
Hotspur: Why, so can I, or so can any man;
But will they come when you do call for them? Shakespeare’s Henry IV, Part 1, Act III:
go with the flow the river knows . . .
Frank
I do not know, therefore everything is in pencil.Comment
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Did I break this thread by mentioning one out of order?Originally posted by rogue06 View Post
I'm always still in trouble again
"You're by far the worst poster on TWeb" and "TWeb's biggest liar" --starlight (the guy who says Stalin was a right-winger)
"Overall I would rate the withdrawal from Afghanistan as by far the best thing Biden's done" --Starlight
"Of course, human life begins at fertilization that’s not the argument." --TassmanComment
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Sort of. Most of my photos turned out to be unusable. However:Originally posted by rogue06 View Post
Nilpena and the wider sites around Parachilna are considered so unique and important to our understanding of the origins of life on Earth that a new geological period was declared in 2004 – the first in 120 years.
The Ediacaran Era, sandwiched neatly between the Cryogenian and Cambrian eras, spans 630 to 542 million years ago.
Ediacara itself is 520km or so due north of Adelaide.
Aspidella.jpg
Dickinsonia.jpg
1Cor 15:34 Come to your senses as you ought and stop sinning; for I say to your shame, there are some who know not God.
.⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛
Scripture before Tradition:
but that won't prevent others from
taking it upon themselves to deprive you
of the right to call yourself Christian.
⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛⊛Comment
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