Evolution of Mammals Re-evaluated
AaxelB writes "A study described in the New York Times rethinks mammalian evolution. Specifically, that the mass extinction of the dinosaurs had relatively little impact on mammals and that the steps in mammals' evolution happened well before and long after the dinosaurs' death."
There is no theory of evolution, just a list of animals chuck norris has allowed to live....
Is "your friend" TFA? Because that same goddamn paragraph is in the fucking article!
Most sensible explanation
In other words, chicken tastes like dinosaur!
(In Creationist America and Lysenkoist Russia, dinosaurs taste like chicken!)
I had thought this point was actually a point of disagreement between Gould and Dawkins, with Dawkins pointing out that the cambrian explosion wasn't as sudden as Gould had pointed out. I think this particular point was discussed in Bryson's "A Brief History of Nearly Everything". I didn't think anyone still held this viewpoint about mammalian evolution anymore.
It's not so "cool" having to clean dinosaur droppings off my car, though.
Slow down, cowboy! It has been 4 hours since you last posted. You must wait another few hours.
But can they shoehorn it into the framework of a 6000 year old Earth?
Trolling is a art,
Here's an interesting question: how long did it take for creatures to speciate after the Permian extinction? I wonder if there was the same amount of lag-time after that disaster...
RS
Shoes for Industry. Shoes for the Dead.
That friend of yours is the article you just lifted the text directly from? Does it come to your parties?
Until the next "re-thinking." Will we ever have hard evidence, or just thought experiments?
Evolutionary is just a theory, not a law, so it is okay to have these revisions. It's interesting, surprising news, but it's not earthshattering and shouldn't shake our faith in evolution.
Does that mean there could have been divine creation, and not evolution, at least in the case of humans? I know that cold hard facts should trump what we wish to be true, but for a question as fundamental as the origin of our own existence, maybe it works the other way.
Speaking of misleading titles! I got all excited about your post's title, anticipating a link to some Miss Universe-type website. Instead, all I got was a one-sentence comment.
I just watched a special on Animal Planet about mammals and dinos. They were saying that the T-rex actually evolved from half evolved bird/dinos. The young had a feather like coating that shed as the T-rex got bigger.
I've known about this since Sunday.
Triv
From Conservapedia:
A CBS survey said there's no evolution! If 87% of people say there's no evolution then this article is a sham sir!
Back on-topic, what interests me is:
If it wasn't the dinosaurs stopping the evolution of mammals (i.e. dinosaurs dominating the habitat), then what did? Could it be that the available habitats were just better suited to dinosaurs vs. mammals? That's the first thing that springs to mind (although am no paleontologist). As ever with this sort of thing, the finding raises more questions than it answers!
I'm going to transform myself into a mighty hawk. Either that or I'll just go and work at Dixons, haven't decided yet.
I thought it was about six million years, could be wrong though.
The big thing was grass, it hadn't been around for most of the time the dinosours had existed. The domination of grasses after the CT event really helped the spread of species
You are fucking retarded. First off, I am pretty sure that even Muslims believe in creation, and this isn't likely to change for a while. Those Christian religions that don't place a literal meaning to the 6 day creation story in Genesis are growing, just as happened with other parts of the text. Christianity is probably 700 or so years more advanced than Islam just based on it being around longer. Until Islam goes through something like the Dark Ages and wakes up it will remain the bastardization of a religion combined with a social plan. With Islam there is no separation of Church and State - remember that.
I'm posting AC since this is so off topic.
ak3ldama (554026)
So... I'm not trying to argue for or against intelligent design/evolution. Science is often championed as being very sure... especially evolution, it seems, when one looks at the court cases and news articles when the controversy comes up in schools, where it taught as pretty much proven fact. Does it raise questions in no one else's mind when it is quite consistently being "rethought?" It seems it should not be dogmatically asserted as it is now, nor should a "rethinking" be taken in stride as if it's entirely normal behavior for science. And yes, I know it's not a scientific fact, it is a scientific theory, as most scientific thoughts are - but most school kids don't know much of the difference between "fact" and "scientific theory." It's simply taught. Here's the chapter on gravity, here's the chapter on evolution. Maybe informative materials should be re-evaluated when the theory itself is re-evaluated.
Actually, the ideas contained in the Nature article are based on new, hard evidence, not a "rethinking" of thought experiments. Or didn't you read the linked NYT article? That's how science works.
Some mornings it's hardly worth chewing through the restraints to get out of bed.
If you read The Ancestor's Tale by Richard Dawkins, you'll find that recent genetic evidence suggests that many of the distinct branches of modern mammals predate the K-T extinction.
In particular, by the time of the K-T extinction, I believe that the primate lineage had already separated from rodents, as well as the laurasiatheres (all hoofed mammals, lions, tigers, bears, etc.), xenarthrans (armadillos, sloths, etc.), and afrotheres (elephants, manatees, anteaters, etc.).
So, while most mammals in the Cretaceous may still have been tiny shrew-like creatures scurrying around in the underbrush, many of the modern lineages had already come into separate existence.
It is also interesting to read, in the book, that our nearest non-primate relatives aside from the tree shrews are rodents. I can sort of see it: give a mouse a little more finger dexterity and it wouldn't not that different from a lemur. It also might explain why rodents are such good laboratory specimens.
Specifically, that the mass extinction of the dinosaurs had relatively little impact on mammals and that the steps in mammals' evolution happened well before and long after the dinosaurs' death.
Do they think that those steps ever could have taken place if the dinosaurs were still around?
Technoli
Wantonly beating their wives? Nonsense. Some Islamic countries have the toughest laws around. Why, you can get up to 3 months in jail for an honor killing!
Did you go with Geico?
Nerd rage is the funniest rage.
You must be a moderate, level-headed conservative, because that website is NOT satire.
Don't lead me into temptation... I can find it myself.
...because you could get a caveman to do it!
I am definitely outside of my field of study here, and not really sure if my question is quite on topic but here goes:
The fuse thing bothers me. It leaves the impression that mammals were going to burst into proliferation at some point no matter what. Like there was a guaranteed start to that. I still think it was an accident by natures "need to survive". I can't think of another species which would be a better candidate however but that is not helped by my lack of understanding in the field.
To me it seems more likely that a freak accident (or "natural accident") may have activated a specific genetic sequence or mutated some aspect of mammals which increased their survivability rate. This just seems like evolution at it's best.
My assumptions about mammals and what has made us more adaptable than some other species:
We are warm blooded - Much larger geographic areas are available to us and we are a much "hardier" species for extreme weather.
We have hair - Goes along with being warm blooded and the geography thing mentioned above.
We nurse our young - Our young are not fully developed before birth, to me this signals that we have exceeded some "original" amount of time anticipated by nature that it should take to give our young rudimentary skills. Remember some species are born with everything they need to know for life already in their programming. Learning and experience mean more to many species of mammals than just wrought memorization like you frequently see with reptiles, amphibians, fish, insects, etc. By virtue of how "we" do things as mammals we give our young much more time to learn, adapt, and become "ready" for the world.
We are omnivorous - Mammals as a whole are generally omnivorous, though in the context of millions of years ago I would venture to assume that much of this is by adaptation anyhow. In any case this drastically expands our food selections as most (all?) mammals are not limited to eating one food group or even a very narrow selection of foods.
Maybe another disease died out, or maybe this is where we started developing a better immune system. It's hard to tell when our internal workings developed from so long ago just because of a serious lack of soft tissues. Maybe our eyesight just took a while to improve from being nocturnal for so long? Maybe the Dinosaurs were the primary reason for mammals to be nocturnal, and once the large ones were gone it took a while for evolution to "switch back"
Now I am just rambling, but maybe someone with a clearer understanding of such things would be so kind as to disprove or converse about some of my ramblings.
Sadly, this article will still undoubtedly be used my the uneducated to try to show that the Theory of Evolution is inferior to Intelligent Design because there are still things we don't know entirely or change our minds about based on new evidence. (Whereas, of course, they have it all figured out beyond question.)
Of course, when I see articles like this, I think it's a very good thing, not bad. It shows the beauty of science, that there is always room for refinement of our ideas of the way things are based on new evidence and new ideas. No, we don't have it all figured out yet, but unlike Intelligent Design advocates, at least we're trying, and we're open to new possibilities. (Yes, even Intelligent Design, if there were any credible proof of it.)
I always think it's kind of funny that Creationists and Intelligent Design proponents think that there's some kind of scientific conspiracy to advance the evolution "agenda." I believe in the Theory of Evolution, and believe me, if I could prove that it was false beyond any shadow of a doubt, I would in a heartbeat. For one thing, I'd be world-famous and likely very, very rich from book deals and talk shows. For another, I'm not interested in an agenda, I'm interested in the truth, as in things that can be observed and tested, not just taken on faith in spite of a large body of evidence to the contrary.
sigh... Oh well, I'm glad this showed up on Slashdot. At least now I know what my Creationist/ID friends are going to try to beat me over the head with next.
Whats worse is that some of those surveyed might not be in Alabama...
I've been partial to this alternative theory of Intelligent Design. http://www.venganza.org/about/open-letter/
Satire? Don't be so sure. There are plenty of people who believe things exactly the way a place like Conservapedia has written them. As a matter of fact, look at their article on Evolution [http://www.conservapedia.com/Evolution] -- nowhere do you see any mention of carbon-based dating or radioactive dating of any sort. A satirical site would've tried to make at least a passing funny reference to radioactive dating, don't you think?
It is by my will alone my thoughts acquire motion; it is by the juice of the coffee bean that the thoughts acquire speed
Dworkin wasn't much of a liberal. As a conservative fellow-traveller, she did everything she could to help the Meese Commission, for instance. She was a perfect combination of the my-way-or-the-highway dogmatism of Ayn Rand and the sex appeal of Hurley from "Lost."
Nope. It's not satire. It was created by Andrew Schlafly, son of arch-conservative anti-femininst Phillys Schlafly, and is used by her Eagle Forum.
If the ideas presented on that site induce laughter, it is because neoconservative ideas are completely ridiculous. Really, Mark Twain couldn't produce satire so deep. I honestly hope that the GOP uses that site as their definitive reference. Within two generations, they'll be too stupid to breed.
That's pre 7-11 thinking....
By reading NYT articles? Is that where you get all your scientific facts?
You don't have the slightest idea what "neoconservative" means.
There is absolutely no evidence for devine evolution whatsoever (sorry, the bible doesn't count), so could the creationists and 'intelligent designists' please leave the building. Let's not forget that intelligent design is just the boilerplate for a group of scary people who teach their kids that the speed of light must have been massively slower in the past few thousand years and that fossils have been created over a few thousand years since a 'flood'.
It's all just a crock cooked up by a load of religion toting crooks who need to keep the cash flowing in from the faithful (or should that be fearful).
Re-Thinking? Well, hell if you knew it wasn't right, why didn't you say so before?
Jeez.
See, this is why Creationism is right...No rethinking required. Ever.
ad logicam Claiming a proposition is false because it was presented as the conclusion of a fallacious argument.
Please don't do this, at the very least, to me.
What, you ask? Why, explain the joke I made so as to completely suck any humor out of it.
Nerd rage is the funniest rage.
By reading NYT articles? Is that where you get all your scientific facts?
No, but it was linked in the main article and gave a reasonably accurate synopsis of the Nature article. Nature has an abstract of the article on their website, but you must be a paying subscriber to read the full article online, which few /.ers are, I assume. You can read the full text at any university library and at many public libraries. Which of these do you plan to do to confirm your original statement?
Some mornings it's hardly worth chewing through the restraints to get out of bed.
Evolution:
1 + 2 + x + y + 5 = 15
Creationism:
x^2 + 1 = 0
"Rodents Of Unusual Size? I don't think they exist." http://www.imdb.com/title/tt0093779/quotes
A magic man done it! With "forcey forces" of coursey.
And you completely ignored my question: what if I put up a website with caricatures of liberal ideas? Wouldn't you call me out on it?
Now, I'm not a liberal, but it would be pretty easy for me to take all of the most extreme, ridiculous ideas of liberalism and put them into a wiki. I could have articles on:
1: all sex is rape
2: all whites are racists - blacks cannot be racist.
3: no one should be allowed to own any property. All your money belongs to the state and we allow you to keep some of it.
4: all rights come from the state. We give you a few rights and expect you to say "thank you"
5: you do not have the right to defend yourself against crime. If someone breaks into your house and you fight them, you should go to jail.
6: if your opinions are wrong (that is, not politically correct) you should be "re-educated" by force.
7: you do not have the right to raise your children as you see fit. Children belong to the state.
And then, after I create this website, people would start quoting it back to you, "OMFG LOOK AT WHAT THESE IDIOT LIBERALS BELIEVE!" Wouldn't you point out that the site was a joke?? What would you say if I came along and declared, "oh no, that site is real."
I think it's sad that your views of conservatives are based on a stereotype that you invented. It's says a lot about you (and other slashdotters) that you take everything negative from a group and put them together to build a boogeyman. I guess that's the only way you can have your two minutes of hate every day. But it's possible to do that to any group. Some slashdotters are virgins. Some live with their parents. So I could put all that together and create this caricature of a nerd and use that to write off everything on the site.
But that would be pretty ignorant of me, wouldn't it.
Conservapedia is self-parody, but it is produced and maintained by "Conservatives" as a repository of official "Conservative" dogma. Because they think Wikipedia is "liberal", as they clearly state in their About page. Typically Conservative, they're using the Wikipedia software for free, but don't even mutter a minimal thanks to Wikipedia - they just bash it.
Anonymous Conservative Coward is a typical Conservative: trying to have it both ways, all ways, whenever it's convenient. There is no "truth" for today's "Conservatives" (What are they "conserving"? They're wasters, reckless consumers and rampant destroyers.) So whenever they dart out from behind their favorite weasel words to make a clear statement, they're usually a joke, at least because they contradict whatever other statement they made before that was once convenient then.
"Reality has a well-known liberal bias." - Stephen Colbert
--
make install -not war
They're just scruffy house-dwellers with poor hygiene. So they're like one step up from hippies.
What kind of marketing genius dreams up an entire campaign involving alleged cave-people who don't exhibit the only qualifying criterion for that status that exists? i.e. living in a cave.
Can you be Even More Awesome?!
....because you could get a caveman to do it!
If you watched that show on the Discovery channel I believe it was the episode of 'Mammals vs Dinosaurs'. They showed how vegetation played a big role in the mammals survival and how dinosaurs when young were not able to hide in the vegetation from larger creatures because the mammals were the dominate species in that level of vegetation.
Something along the lines of that....
So the mammals killed off the dinosaurs at a young age.
I don't have a tv, although I do watch other peoples from time to time.
I have heard of the vegetation thing, but it was other flora, not grasses, so far as I understand, ferns or somesuch.
While I am a programmer at heart I supposed, I do have a strong interest in biology (amongst other things). I just wanted to add to any geeks out there who have any interest at all in biology, read this book. I found it to be excellent on many levels. I am not here to do a book review, just wanted to say it comes highly recommened from someone *not* in the field. Also, if your in OC (SoCal), I think I saw a flyer that he gave a speech down in Laguna Beach a few months ago. Not sure if he is normally in the area or not.
>It also might explain why rodents are such good laboratory specimens. :-P
See, you're actually assuming that they are good models, whereas it's not clear that they are.
Indeed, regardless of how good a model they are, they are rather used because of their size,
cost and fewer objections by laity. People want to save the cute bunnies (actually lagomorphs,
close cousins of the rodents), but most don't care about the white mice in the cage next to it.
And some people object to being compared to monkeys, apes or pigs
Were that I say, pancakes?
The researchers believe that various species of grass had spread before India became geographically isolated from other continents about 125 million years ago.
With the CT event at 65.5MYA, grasses may have already been around for a while.
If the evolution of intelligent mammals isn't tied to a random event like the extinction of the dinosaurs, does this greatly increase the chances of there being sentient extra-terrestrial life?
i
Duh...
Oh yes, they were around, but only as a relatively minor plant. They became dominant after the CT event.
Evolution:
x + 2 + 3 + 5 + 7 + y + 13 = 42
Creationism:
x^2 + 43 = 42
See, you're actually assuming that they are good models, whereas it's not clear that they are.
Yes, that's true.
It may well be that any old mammal would do, and mice are merely good because they are small (and for breeding purposes, they have a very short generational cycle and large litters).
I suppose what I was trying to suggest was that mice may be particularly good to compare for specific genetic reasons beyond the obvious ones I just mentioned. Though any argument about our particular closeness to mice could be made about any other rodent or lagomorph just as easily: mice are just as close to us as the cute bunnies are, and as the R.O.U.s would be if they existed.
How dare you defy the wise words of the Flying Spaghetti Monster? Arrr!
09 F9 11 02 9D 74 E3 5B D8 41 56 C5 63 56 88 C1 bottles of beer on the wall. Take one down, pass it round... Oh, umm...
Of course, this makes any idea that receives broad support from scientists in many cultures (such as evolution, or global climate destabilization) even more likely to be correct. Scientists make mistakes and refuse to give up silly ideas just like anyone else.
God created the earth, and all the hosts therein, in six days, resting on the seventh, and establishing the Sabbath as a memorial of creation. The recurring seven day time period (we have come to call one week) occurs ONLY in the account of creation, and no where else, and yet, all of us observe it to a great extent. The evolutionists can (and will) continue to change, reshape, and rethink their theory until the return of Jesus. They'll be forced to do so, as it becomes apparent to them that some scientific fact arises for which the current iteration of said theory cannot account. This is just the latest example. Sad really. Most evolutionists would consider themselves critical thinkers, and they've concocted a theory supported by very few threads of actual evidence.
[Specifically, that the mass extinction of the dinosaurs had relatively little impact on mammals and that the steps in mammals' evolution happened well before and long after the dinosaurs' death.] Do they think that those steps ever could have taken place if the dinosaurs were still around?
Even if there was mammalian diversity *before* the meteor event (dino extinction), that does not necessarily mean the mammals were large. Having lots of species and having big species is not necessarily the same thing. Thus, even though there may have been lots of mammals before the meteor, they still might have been small. The relatives of elephants etc. may have been small, for example. Cute little cat-sized elephants (well, maybe they looked a lot different back then).
Thus the view that the death of dinos made way for *large* mammals still seems to be accurate, or at least not refuted. I don't know of any large mammal fossils found before the meteor event.
Table-ized A.I.
http://www.icr.org/article/3191/ Several years back, this writer attended the International Conference on Dinosaur/Bird Evolution. One afternoon, a number of us took a field trip led by a recognized "expert." He asked us if the field in which we were standing could have been a dinosaur-age environment. Several said no, because there was grass present. Evolutionists maintain that grasses were not present during the age of dinosaurs -- In my review |i.e., Eschberger, ed.| of Disney's new movie "Dinosaur," I mentioned that one of the few scientific inacurracies |sic| that I found in the movie was the presence of grasses in the dinosaur nesting grounds.3 However, in a 2005 report we read, "Plant-eating dinosaurs munched on grass, say scientists who had thought the plants emerged after the beasts died off."4 Students were taught that the only mammals during the "age of dinosaurs" were small, and barely able to stay alive among the terrible thunder lizards. Evolution theory said that the mammals were nothing more than "shrew-like insectivores that hunted at night." That radically changed with the recent discovery of large, dinosaur-hunting mammals!5
Confucius say, "Find worm in apple - bad. Find half a worm - worse."
Unfortunately, Conservapedia was started by a group of fundie literalists in New Jersey to correct what they felt were 'glaring errors' and a 'liberal agenda' in Wikipedia.
In other words, yes, there really are people that stupid.
110100 1101000 1101000 1100110 0 1101111 1101000 1100011 1
Christianity is probably 700 or so years more advanced than Islam just based on it being around longer.
I see. So how many revisions did the bible go through in that time?
Thanks. Now make a note in your diary so that when it gets to December, you don't forget to inform us all that reindeer can't actually fly.
Only three things are certain; death, taxes, and apocryphal quotations - Ben Franklin.
Can it be because there is more selection pressure due to the dinosaurs?
If there is more selection pressure, more the chance of diverging to new species.
And when dinosaurs died out, the mammals had a field day.
rajmohan_h@yahoo.com
Paint with a broad brush much? Its easy to generalize either side, because it is usually the ones furtherest from center that have the biggest mouths. More centrist liberals would probably realize such.
Woke up this morning and it seemed to me,
that every night turns out to be
A little more like Bukowski.
And yeah, I know he's a pretty good read.
But God who'd wanna be?
God who'd wanna be such an asshole?
God who'd wanna be?
God who'd wanna be such an asshole?
Well we sat on the edge of the river,
the crowd screamed, "Sacrifice the liver!"
If God takes life, he's an Indian giver.
So tell me now why, you'll tell me never.
Who would wanna be?
Who would wanna be such a control freak?
Well who would wanna be?
Who would wanna be such a control freak?
Well see what you wanna see. You should see it all.
Well take what you want from me. You deserve it all.
Nine times out of ten our hearts just get dissolved.
Well I want a better place or just a better way to fall.
But one time out of ten, everything is perfect for us all.
Well I want a better place or just a better way to fall.
Here we go!
If God controls the land and disease,
keeps a watchful eye on me,
If he's really so damn mighty,
my problem is I can't see,
well who would wanna be?
Who would wanna be such a control freak?
Well who would wanna be?
Who would wanna be such a control freak?
Evil home stereo, what good songs do you know?
Evil me, oh yeah I know, what good curves can you throw?
Well all that icing and all that cake,
I can't make it to your wedding, but I'm sure I'll be at your wake.
You were talk, talk, talk, talkin' in circles that day,
when you get to the point make sure that I'm still awake, OK?
Went to bed and didn't see
why every day turns out to be
a little bit more like Bukowski.
And yeah, I know he's a pretty good read.
But God who'd wanna be?
God who'd wanna be such an asshole?
Please stop stalking me, bro.
But NBC says wikipedia can't be trusted! Now I know I have to watch TV if I want to know things.
Please stop stalking me, bro.
You're absolutely right. Conservapedia appears to be run by theocratic paleo-conservatives who think that science is a tool of the devil, not neoconservatives who think that democracy can be spread at gunpoint. My mistake.
That's pre 7-11 thinking....
Sure like:
Deuteronomy
"As you approach a town to attack it, first offer its people terms for peace. If they accept your terms and open the gates to you, then all the people inside will serve you in forced labor. But if they refuse to make peace and prepare to fight, you must attack the town. When the LORD your God hands it over to you, kill every man in the town. But you may keep for yourselves all the women, children, livestock, and other plunder. You may enjoy the spoils of your enemies that the LORD your God has given you."
In this neat little passage we have slavery, genocide and rape by command of the god of the OT.
Here is something to describes the character of the god of the OT...
Exodus
"The LORD is a man of war: the LORD is his name."
And here is some more OT god mercy and graciousness and long-suffering. Obviously the love and mercy did not apply to young virgin children girls.
Numbers
"They warred against Midian, as YAHWEH commanded Moses, and killed every male. They killed the kings of Midian with the rest of their slain
Now here we have clearly child rape. Keeping in mind that the Midians were pure evil (the standard apologetic response to the above passage) just how young do think these virgin children were? Does not your OT gods grace apply to them?
Is that why whenever the "spirit of the lord" moves within Sampson he goes out to kill people. Yup the love of people just is quite clear in the above passages.
In my experience biblical illiteracy is widespread among bible believers.
No it did not! The flood is a not only a myth but a borrowed myth. Check the story of Gilgamesh, of which sources predate any OT sources. Try to read something other than Christian Apologetics.
Further the proof the flood does not exists is clearly and abundantly obvious in Geology. Get out into the field take a book or surface geological map and look around and will encounter geological formations that deny the flood.
It has gone through what could be considered 'revisions', but they are more of a translation change and not necessarily to the original text. The situation at the heart of this is something else though: Is there really a difference between interpretation and revision? If the generally held belief on the wording of a text disregards portions or takes into account different viewpoints then the text remains the same but the meaning is partially/drastically altered. There are many things to take into account (if one so chooses) such as the context of who said it, who it was said to, and the times it was said. These and other things can allow the 'text' of a writing be disregarded or taught differently. Usually this takes time, which is what the GP, I, was referring to.
Again posting AC since this is so off topic.
ak3ldama (554026)
doh, nt
It is no longer uncommon to be uncommon.