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Learning More About The Top Predator of the Cambrian Period
#1
This is very interesting. Perhaps the top ocean predator of the Cambrian Period, Anomalocaris, had far more sophisticated eyesight than previously thought. Or at least we think so.

The sharp eyes of Anomalocaris, a top predator that lived half a billion years ago

[Image: Anomalocaris_reconstruction.jpg]
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"Falsehood flies, and truth comes limping after it" - Jonathan Swift, 1710
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#2
that thing looks like an alien.
Quote: “A society that puts equality… ahead of freedom will end up with neither equality or freedom…a society that puts freedom first will, as a happy by-product, end up with both greater freedom and greater equality.” --Milton Friedman
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#3
Life As We Know it Part 1

Life As We Know It Part 2

Life As We Know It Part 3

Life As We Know It Part 4
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"Falsehood flies, and truth comes limping after it" - Jonathan Swift, 1710
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#4
(12-11-2011, 12:29 PM)Aurora Moon Wrote: that thing looks like an alien.

Most of life back then was quite alien to today's life.

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"Falsehood flies, and truth comes limping after it" - Jonathan Swift, 1710
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#5
That's weird, "fossilized eyeballs". Assume that's accurate, how could something like that not have been corrupted in short order?

I am guessing, but, there has to have been a dramatic, sudden killing and freezing to preserve that stuff?
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#6
Psychedelic. No words. Disjointed images. What would it mean to someone who did not already know some of the history? Not much, maybe good to watch when you smoke a joint.
Jefferson: I place economy among the first and important virtues, and public debt as the greatest of dangers. To preserve our independence, we must not let our rulers load us with perpetual debt. We must make our choice between economy and liberty, or profusion and servitude. If we can prevent the government from wasting the labors of the people under the pretense of caring for them, they will be happy.
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#7
(12-11-2011, 03:07 PM)Palladin Wrote: That's weird, "fossilized eyeballs". Assume that's accurate, how could something like that not have been corrupted in short order?

I am guessing, but, there has to have been a dramatic, sudden killing and freezing to preserve that stuff?

Nothing weird about it. That's an insect with far more solid eyes than our soft balls, just needs to buried in mud, no shockfreezing. We can't say what agents of decay were at work back then, they didn't leave fossils. Take for example the carboniferous. All your coal deposits are from this time, because wood evolved 50 million years before fungi which can rot wood. When a tree fell, it could lie on the ground for millions of years, and not decay. Only thing that put CO2 back to the atmosphere were wildfires, which must have been spectacular in an air that contained 30%+ oxygen.
"You know, Paul, Reagan proved that deficits don't matter." Dick Cheney
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#8
Quad,

I had assumed their eyeballs were soft tissue like ours. My mistake.
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#9
How were the continents located in the Cambrian period?

The Cambrian explosion of life is said to have created all the branches of the phylogenic tree. Lots of evolution all in a few million years.
Jefferson: I place economy among the first and important virtues, and public debt as the greatest of dangers. To preserve our independence, we must not let our rulers load us with perpetual debt. We must make our choice between economy and liberty, or profusion and servitude. If we can prevent the government from wasting the labors of the people under the pretense of caring for them, they will be happy.
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#10
(01-19-2012, 07:25 PM)jt Wrote: How were the continents located in the Cambrian period?

The Cambrian explosion of life is said to have created all the branches of the phylogenic tree. Lots of evolution all in a few million years.

HERE YOU GO

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#11
No constriction of oceanic currents, like today. Ergo, no ice ages. Nothing but unrestricted Global Warming, and no humans around to cause it either. S5

[Image: tommotian.gif]
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"Falsehood flies, and truth comes limping after it" - Jonathan Swift, 1710
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#12
Warmer, but not by much. The reason is that the landmasses were far smaller. The moon was closer, and didn't cause today's lazy tides, but a tsunami every 10 1/2 hours. That eroded the coasts in no time at all. No sandy beaches, but bare rock. A day lasted 21 hours, a year had over 400 days. The polar regions had fluctuating ice cover in the winters, like the Arctic now. The large continent had a vast desert in the interior, bigger than Central Asia now.
"You know, Paul, Reagan proved that deficits don't matter." Dick Cheney
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