New Epoch in History of the Earth

exp(pi*sqrt(163)) writes "According to the BBC News, for the first time in over a century geologists have decided to add a new name for a period in the timeline of the planet earth. From now on, the time from 600 million years ago to 542 million years ago is to be known as the Ediacarian Period. Geologists now see this period, just before the first shelled animals appeared, as important enough to deserve recognition in its own right. This will also help to reduce the confusion caused by the myriad of names that have been used for this period up to now."

Comments

Call Burt Gummer

[Marxist Hacker 42]

El Blanco and his Graboid pals aren't pre-Cambrian, they're now Ediacarian. I wonder if the next iteration of the Tremors franchise will use the proper terminology?

Probably not- Hollywood seems to hate science as of late.

Get the name of the period right!

[exp(pi*sqrt(163))]

It's Ediacaran, not Ediacarian.

Re:Get the name of the period right!

[Anonymous Coward]

#include
#include
int main()
{
printf("%f\n",exp(M_PI * sqrt(163)));
return 0;
}

262537412640768256.000000

What does this all mean?

Re:Get the name of the period right!

[jc42]

It's Ediacaran, ...

Yup, and it's not exactly a new term. The only real change here is deciding to no longer call that period "pre-Cambrian". 50 years ago, not enough was known about things that old to justify declaring an official period name. But now we know a lot more, and there is a rough concensus on where the border belongs, so promoting "Ediacaran" to the top level now makes sense.

The major book on the early Cambrian is probably still Stephen Jay Gould's "Wonderful Life", though a few minor points in that book have been superseded in the 15 years since it was published. Is there a comparable tome on the Ediacaran fossils? There were some truly alien-looking creatures then, not very similar to anything living on Earth today.

Re:Get the name of the period right!

[exp(pi*sqrt(163))]

You need more digits.

Re:Get the name of the period right!

[l2718]

exp(\pi * \sqrt(163))
What does this all mean?

This number has the surprising property of being within 10^-12 of an integer. It is known as "Ramanujan's number", after the Indian mathematician who made the observation. For a well-presented (warning: technical) proof of this fact, read Ben Green's account.

Re:Get the name of the period right!

[exp(pi*sqrt(163))]

Really, that should be a 1728 in your username, not 2718.

Re:Get the name of the period right!

[eoyount]

Really it should be 1729.

Ramanujan observed that it had the interesting property of being the sum of two distinct pairs of cubes.

12^3 + 1^3 = 10^3 + 9^3

Re:Get the name of the period right!

[exp(pi*sqrt(163))]

But 1728 pops up in the definition of the modular function j which is the coolest function in the universe, besides being implicated in the properties of my username.

Re:Get the name of the period right!

[l2718]

Really, that should be a 1728 in your username, not 2718.

Well, I decided to truncate 2.718281828450945...

Other names for this period

[robert0122]

This will also help to reduce the confusion caused by the myriad of names that have been used for this period up to now."

Here in Texas, we always called it "the other day".

simple

[pizza_milkshake]

everything is all cleared up thanks to the Edicar... Edictacar... Edicia... ah, forget it.

New modern epochs?

[Tom7]

What about the post-9/11arian epoch? If we don't have it, then the terrorists have already won.

Correction to Re:Call Burt Gummer

[Marxist Hacker 42]

Ok, so the graboids are Ediacaran- I've corrected myself. Now can somebody explain to me why there's an i in "pre-Cambrian" but not in "Ediacaran"?

Re:Correction to Re:Call Burt Gummer

[WhiteBandit]

Because many geologic eras/epochs/etc are usually named for type localities. In this case, the type locality for the Ediacaran is the Ediacara Hills.

According to Wikipedia, the Cambria is the Roman name of Wales, where rocks of Cambrian age exist and were studied.

But then again, I could be completely wrong since all languages have their nuances. Take for example "Canada/Canadians" ;)

(Note, I really do love my Canadian friends. It is just a funny page. :)

Re:Correction to Re:Call Burt Gummer

[Marxist Hacker 42]

Ah, thanks. That makes a lot more sense than changing the ending of words just for the heck of it. (had a thought about Latin suffixes here- but it left before I could write it).

Ediacaran period

[KnacTheMife]

well thank God that's been settled

Gould's Wonderful Life

[Latent Heat]

The big point of "Wonderful Life" is that the Burgess fossils were first shoehorned into existing phyla by Walcott, and that he, S. J. Gould, explained that the Burgess had all kinds of bizarre phyla that don't exist anymore, which means we should count ourselves lucky that we don't have eyes on our butts and spikes sticking out of our foreheads.

Story I heard was that "Wonderful Life" was dismissed among people in the know as a form of peer-review bypassed grandstanding. A lot of what Gould had to say is controversial. This is not to say that people can't take controversial or off-the-wall theories to the popular press (Wolfram's New Physics), but I had gotten the mistaken impression that "Wonderful Life" represented main-stream thinking on the subject, which it does not.

Hear It, Smell It, Touch It, See It, or Taste It

[follower_of_christ]

You can lick a fossil, see a fossil, touch a fossil, hear a fossil if you drop it, and taste a fossil.

They all look, smell, feel, sound, and taste like...... rocks. But it takes faith to believe they appeared millions of years ago by random chance.

Re:Hear It, Smell It, Touch It, See It, or Taste I

[exp(pi*sqrt(163))]

Amen to that! It takes idiocy to believe they appeared years ago by random chance. Fortunately few people believe that. I, for one, believe they are there as a result of evolution.

Current Epoch

[stanwirth]

Cocacolazoic

OT: yup.

[torpor]

The U.S. lost the war on Terrorism already. 2 years ago. Its old news.

I vote that we call this future of U.S. "statehood" the "neoconian" period...

Already had a name..

[fluffy666]

This part of the precambrian was previously known as the Vendian period. (Ok, the link does give an alternate name, but this news is at least a decade old).

Re:why not just put your name as....

[Anonymous Coward]

Oh, that's right.. The diameter of a circle does vary in relation to the circumference, doesn't it.

So what is the last digit of pi?

Re:why not just put your name as....

[beerman2k]

So what is the last digit of pi?

6

i thought this epoch is called DarlMcBridean...

[freedom_india]

Funny. i was thinking they would say this as DarlMcBridean_Patent_Hell epoch by the way they were discussing about shelled animals...