Well, it looks like Ed Brayton beat me to this one, but since I penned most of this post by the time I saw his, I figure I’ll go ahead and share it anyway.
After Jason’s excoriation of Sisson, I thought we’d hit rock-bottom in terms of ignorant dilettantes. If only it were so. Rodney Stark, professor of sociology at Baylor (home to another favorite of ours), proves that there really is no rock-bottom when it comes to anti-evolutionist diatribes. His just published bit in The American Enterprise is titled Fact, Fable, and Darwin. And man is it a doozy.
He starts out with a disingenuous disclaimer and then jumps in with both feet:
I write as neither a creationist nor a Darwinist, but as one who knows what is probably the most disreputable scientific secret of the past century: There is no plausible scientific theory of the origin of species!
You might think at this point that Stark would go into a lengthy discussion of allopatry vs. sympatry, mechanisms of reproductive isolation, chromosomal speciation, and other well-known theories of speciation that have been written about at length over many decades. Uh-uh. Instead, what we get is a litany of ridiculous claims, no clearly defined terms, ad hominems of every kind, and above all, quote-mining. (And man, is there ever some serious quote mining - he even reproduces the canard about Gould saying there were no transitional fossils, candidly dispatched by Ed Brayton here.) The usual creationist blather is all dragged out: biologists are covering up a dark secret; they’re guilty of deception; they all know it’s all false but just won’t say so because of orthodoxy; their entire motivation is atheism — in other words, the sort of stuff that strikes everyone but true believers as an absurd and dishonest attempt to discredit scientific expertise.
I won’t spend time going through all of Stark’s rambling opus and refuting each bit of nonsense as it crops up - there’s way too much of it, and I would hate to deprive our peanut gallery the chance to take it apart piece by piece - so I’ll just get to the heart of the matter. Stark writes:
The biological world is now classified into a set of nested categories. Within each genus (mammals, reptiles, etc.) are species (dogs, horses, elephants, etc.) and within each species are many specific varieties, or breeds (Great Dane, Poodle, Beagle, etc.).
It was well-known that selective breeding can create variations within species. But the boundaries between species are distinct and firm—one species does not simply trail off into another by degrees.
(waits for laughter to die down…)
Needless to say, anyone who thinks that mammals are a genus and that elephants comprise a single species needs to be hit over the head with a grade-school text book and forever disbarred from opening his mouth when it comes to biology. His bombast about species boundaries being firm and distinct is hard to take seriously given that he doesn’t even know what a species is. If he did, he might realize that speciation has been observed on multiple occasions, and that there are innumerable examples of how species blend into one another, as is the case with Darwin’s finches, and with ring species. Heck, even elephants make a good example.
The fact that Stark doesn’t clearly define what he’s talking about makes it easy for him to connect a number of disjointed issues into one seamless stream of dishonest nonsense, which rambles from topic to topic with little in the way of coherence. Scientists quoted about speciation are treated as if they were talking about higher-level evolution, and vice-versa. Mechanisms of small-scale evolution are confused with common descent, and so on. To a person knowledgeable about biology and evolution, there is no meaningful continuity in Stark’s piece, and certainly nothing that’s not grossly misleading.
The typology that Stark so brazenly insists is biological reality was abandoned by scientists long ago, not because of some metaphysical bias as Stark indulges himself to believe, but because the facts just don’t fit. It’s just not possible to shoehorn biological organisms into Platonic types; they consistently confound any attempt to do so because they contain too much variation, and in some cases, they blend right into each other. That’s why there’s more than one species concept - it can be very hard to tell when you’ve got two or more species, or when you have a single species with many varieties. The only reason that higher-level taxonomic groups are so distinct is because extinction has wiped-out the intermediates.
Creationists (from whom Stark appears to have borrowed all of his arguments) have long insisted that typologically distinct organisms (what they call “kinds”) are real, but their arguments are entirely unpersuasive. Most poignantly, they have been unable to come up with a consistent definition of “kinds” that can withstand trivial counter-example. Does “kinds” mean species? Well, observed instances of speciation make that untenable. Attempts to define “kinds” as being equivalent to higher taxonomic categories are inconsistent and invariably end up with completely different categories for different taxa — sometimes it’s genera, sometimes it’s phyla, and at other times it’s anything in between. (The one consistency is that humans and chimps are never in the same “kind”, even though far more dissimilar species frequently are.) But at least creationists realize the scope of the problem. Rodney Stark, on the other hand, is not yet up to that level of sophistication.
82 Comments
Mike Hopkins · 2 August 2004
Notice the usual mispelling of Niles Eldredge's name in the Dr. Stark's article.
Why does he have to have that disclaimer at the start of his article claiming some sort of neutrality? One would think a neutral professor would have read works from both sides. One would hope he would flunk students for doing what he has done.
The article is about as bad as the stuff by Kent Hovind.
--
Anti-spam: replace "usenet" with "harlequin2"
Jan Haugland · 2 August 2004
This is shocking and quite tragic. Rodney Stark is an eminent sociologist, and should stick to what he knows. Quite a few points in my master thesis (history, sociology) was based on his work :(
John Wilkins · 2 August 2004
One ought to mention here that even had he got the Linnaean ranks correct, they are artificial anyway. Even Linnaeus said so. In fact Linnaeus thought that variation was continuous across the biological world, as any Great Chain of Being theorist would have. Natura non facit saltum...
Les Lane · 2 August 2004
Just another example of not knowing the difference between science and rationalizing. I suspect it's not dishonesty, but ignorance. Ignorance can be highly effective with an appropriate audience.
Reed A. Cartwright · 2 August 2004
If it looks like a duck, quacks like a duck, and walks like a duck then it must be a platypus.
Pim van Meurs · 2 August 2004
Pim van Meurs · 2 August 2004
Pim van Meurs · 2 August 2004
Pim van Meurs · 2 August 2004
Pim van Meurs · 2 August 2004
Pim van Meurs · 2 August 2004
steve · 2 August 2004
There's so much info, I think the Fox News / WorldNutDaily crowd will probably succeed in not only convincing their followers that 'real' science comports with the bible, evolution's wrong, global warming's wrong, the earth is young, etc, but doing so with so much misused info that talking sense into them will be impossible. For the most part, we've seen attacks against science at the public school and school-board level, but biologists like PZ should probably expect to see more comprehensive movements which seek to influence your university curricula soon, as a result of this.
Jim Harrison · 2 August 2004
In Europe, the field of sociology has great prestige and continues to attract high quality researchers and theorists. Alas, American sociology, like American journalism, is for the most part an affirmative action program for the lazy, inept, and shallow.
Steve Reuland · 2 August 2004
Joe Carter · 3 August 2004
Stark claims that, "There is no plausible scientific theory of the origin of species!"
Obviously, that is the crux of his argument whether he is able to support it or not. The question seems to be batted about in the Creationist/Evo arguments but I can't recall ever seeing it addressed in a definitive manner.
If a layman (such as myself) were to ask what *is* the most plausible scientific theory of the origin of species what would be the answer. Gradualism? PE? Is there a dominant theory? Many plausible explanations?
Perhaps shedding some light on that matter would help clear up the confusion.
steve · 3 August 2004
Once two groups get reproductively isolated, their gene pools will start to drift apart. At some point they no longer could reproduce fertile offspring between the groups.
steve · 3 August 2004
Biologists have seen several speciations. Looks like they've just seen another.
http://sciencenow.sciencemag.org/cgi/content/full/2004/802/3
Bob Maurus · 3 August 2004
Hi Joe,
There are probably several equally plausible answers to that question. How do you define species?
Joe Carter · 3 August 2004
***There are probably several equally plausible answers to that question. How do you define species?***
That's a good question. I don't know. I assumed that there was a rather standard definition.
I think most people who aren't that knowledgeable about the subject are curious about the variation in morphological body types. I can grasp, at least on the theoretical level, how the process could work between similar species (i.e., gene pool drift) but I hear different things when the body types vary. For example, Dawkins proposes a gradualism (the climb up Mt. Improbable). But I had always thought that Gould put an end to that sort of theory.
I'm a "creationist" in the broad sense of the term. I believe that ultimately, whatever process occurred, God is responsible. So I'm open to giving a hearing to a range of ideas and don't have a particular bias against any particular view. But as soon as I think I have a handle on what the basic consensus is on the origin of species, I find that either the terms have changed (i.e., the old school definition of species) or the theories appear to conflict (i.e., PE vs. gradualism).
What theory gives a general enough overview that you could say, "This is the basic consensus" and the scientific community would nod their head in agreement?
steve · 3 August 2004
To you too I will recommend Ernest Mayr's What Evolution Is as a good starting point for learning the basics of the theory.
charlie wagner · 3 August 2004
Steve Reuland · 3 August 2004
Joe,
The most popular species defintion is the "biological species" concept developed by Ernst Mayr. This defines a species as one or more interbreeding or potentially interbreeding populations. If two populations cannot interbreed, and if there are no intermediate populations through which their genes can flow, then they are considered separate species. There are problems with the biological species concept, because reproductive isolation is often ambiguous, and there are serious practical limitations in applying it. (For example, it doesn't apply to asexual species.) But it's still the most commonly used definition because for evolutionary purposes, it gives us a way to assess when speciation has occured. When two gene pools become permanently isolated, such that they can never again share genes, then they will from that point forward tend to drift further and further apart. Hence, reproductive isolation is the definitive point at which two populations begin to diverge.
The question then becomes how reproductive barriers get set up in the first place. There are many recognized reproductive barriers, which can be genetic, morphological, or behavioral. All of these traits are known to vary within populations, so it's a matter of individuals (or subpopulations) within a larger population changing to the point at which they can no longer interbreed with the larger population. This can be caused by something as simple as a small shift in the mating season, a minor change in breeding colors, or a slight alteration to a receptor protein in a gamete. These things change all the time due to drift, but the question is, how does a subpopulation become distinct when it's constantly sharing genes with the larger population? Normally, hybridization will smear out distinctiveness.
The most widely accepted answer is that small populations become geographically isolated from larger ones. This geographical isolation prevents a small population from hybridizing with the larger one, so it's able to change over time along its own distinct path. This change may be due to drift, selection, or a combination of the two (people argue about which is more important). And it may be given a kick-start by the founder effect or by a bottleneck event. But either way, after sufficient time has passed, the isolated populations will have changed to the point at which they can no longer interbreed. And at that point, they are considered separate species, even if their geographical ranges once again begin to overlap. This process is known as allopatric speciation.
It gets a lot more complicated than that (and I'm certainly no expert), but that should give you plenty to think about for now.
charlie wagner · 3 August 2004
charlie wagner · 3 August 2004
steve · 3 August 2004
The claim is that speciation has clearly begun, but not yet culminated. If my words were imperfect, people can always read the article. That's why I posted a link.
In some of the previous known examples of speciation, the beginning and end states are known, but the transitional data is unknown. Why I posted the article is, this is a great example where speciation is probably underway, and frequent data taken yearly for the next decade or two can show us genetic snapshots of a speciation event. How cool is that. Darwin would be drooling for that data.
Creationists in 2024 are going to have a bitch of a time arguing against that data, in between promoting whatever Capitalized Pseudoscientific Concept will come after IC and the EF and CSI and etc.
steve · 3 August 2004
Not to mention the two NFLs. No Free Lunch and Nelson's FLaw.
Steve Reuland · 3 August 2004
Bob Maurus · 3 August 2004
Joe'
Lions and tigers are cross-fertile, though matings between the two occur only in captivity - the only place their ranges overlap any more is in India. I believe the offspring is usually fertile.
Horses and donkeys are cross-fertile, though the resulting mules are almost always sterile. Occasionally, I believe, there is a fertile female mule born. I think horses and zebras are also cross-fertile.
Domestic dogs, grey and red wolves, coyotes, foxes and jackals are all cross-fertile, and I think the offspring is almost always fertile.
I tend to think that the degree of fertility of offspring would have something to do with how long ago the isolation began.
charlie wagner · 3 August 2004
Bob Maurus · 3 August 2004
You're right, Charlie - it kinda does.
Great White Wonder · 3 August 2004
Wayne Francis · 3 August 2004
Bob Maurus - You are quiet right about the cross breeding in all those animals.
Mules are normally sterile but it has been known for thousands of years that sometimes they are fertile. Hence the term "When a mule foals" which comes from the ancient Roman saying "Cum mula peperit"
These events are convergent. Given the right situation you could get a fertile hybrid species between horses and donkeys or horses and zebra and a donkey and zebra can also produce offspring.
Donkeys have 62 chromosomes while horses have 64 and most mules 63 while Zebra's can have 46, 44 or 32 chromosomes depending on the type. It is this chromosome difference that normally makes the offspring not fertile. Funny enough interbreeding between some types of zebras is very difficult.
I find it interesting that this well known situation is so easily ignored. When faced with evolution issues creationist want to see a monkey pop out a baby human. That isn't evolution. A parent doesn't give birth to a child that is drastically different. In most cases the offspring are completely compatible with the parents type/breed. Given enough time we see just what we see in the equids.
For a little bit of info on http://www.intl-pag.org/5/abstracts/p-5n-318.htmlchromosome evolution in equids
I've also heard from creationist, as an explanation of some of the logistic problems with Noah's ark that all equids came from a single equid pair on the ark. So there they seem to say evolution is ok but clearly a horse is a horse and a donkey is a donkey and a zebra is a zebra but they all came from a "common ancestor". They have a hard time realizing that in the future the types of equids will have diverged enough that interbreeding is no longer viable. Zebra types are almost to that point already with mountain zebras and plains zebras mating often ending in still birth.
Gary Hurd · 3 August 2004
For the vast majority of people that have never done any taxonomic work (which includes most biologists), the notion of "species" is actually less obvious than you suppose. Even just a few months keying out plants on a hillside will teach you that there is significant variation within a species. Spend a year on freshwater snails, or read a few thousand pages on ostracods and I think that you will at least have an idea about how to use the notion of species. This is in large part the motivation of Darwin's work on barnacles.
Or, just read Mayr. There is a good web article on species written by ERNST MAYR "What is a Species, and What is Not?".
Jim Harrison · 3 August 2004
If the chemists can work with at least three definitions of acids, biologists can operate with several different kinds of species.
One of the unspoken assumptions of creationism is the belief, shared by almost all undergraduates, that the world is obligated to be easy to understand. It isn't.
Bartholomew · 4 August 2004
If anyone's interested in a critical assessment of Stark's sociological work, there's this article by Steve Bruce of Aberdeen University. Stark has a habit of putting ideology before the evidence:
http://www.findarticles.com/p/articles/mi_m0SOR/is_2_62/ai_76759008
Gary Hurd · 4 August 2004
"If the chemists can work with at least three definitions of acids, biologists can operate with several different kinds of species. "
Very good point.
I reread the Stark article, and it occurs that this is a real help aginst the anti-science crowd. One of the major smokescreens employed by the IDiots has been that they are not "banjo twanging creationists." Stark's evidences put them right up there on the porch swing.
~DS~ · 4 August 2004
FYI-Joe Carter is discussing and challenging Ed and Steve by name on
http://www.evangelicaloutpost.com/
If anyone is interested.
Joe Carter · 4 August 2004
***FYI-Joe Carter is discussing and challenging Ed and Steve by name on
http://www.evangelicaloutpost.com/ . . . ***
"Challenging them by name?" Come on, DS.
Here is what I wrote about Ed and Steve:
"As you might expect, not everyone agrees. Ed Brayton calls it "a delightfully ridiculous little article" and Steve Reuland says it "proves that there really is no rock-bottom when it comes to anti-evolutionist diatribes."
Don't you think you are being a bit misleading?
Joe Carter · 4 August 2004
***FYI-Joe Carter is discussing and challenging Ed and Steve by name on
http://www.evangelicaloutpost.com/ . . . ***
Challenging them by name? Come on, DS. Don't you think you are being a bit misleading?
Here is what I wrote about Ed and Steve:
"As you might expect, not everyone agrees. Ed Brayton calls it "a delightfully ridiculous little article" and Steve Reuland says it "proves that there really is no rock-bottom when it comes to anti-evolutionist diatribes."
I've been following these types of arguments for almost twenty years now without coming closer to understanding which side is right.
charlie wagner · 4 August 2004
Pim van Meurs · 4 August 2004
charlie wagner · 4 August 2004
I also just wanted to mention that today is the 11th anniversary of the day my life changed. I'm happy to report that I'm still alive and still being a pain in the ass...
August 4, 1993
It was around 6:00 p.m. on a hot and humid day, as you might
expect in August on Long Island. We had just finished dinner and were
sitting around listlessly. Someone decided it might be a good idea to go
to the beach to cool off. We got our sand chairs and a few other items
and threw them in the car and took off for Jones Beach.
When we arrived, the tide was going out, so we set up our beach
chairs near the high tide mark. There were people all up and down the
beach, just like us. I took off my shoes and opened the newspaper and
Gail took out a book. We were there for about 10 minutes and I was
beginning to feel relaxed. But I was suddenly filled with a sense that
something was not right. I looked over the top of the paper I was
holding and in front of my eyes, there was a wall of black water. I
tried to jump out of the way but it came upon us too fast. It smashed
into our bodies and knocked us to the sand. Our clothes were drenched,
my glasses were broken and the beach chairs were crushed.
Dazed and confused, we emerged from the chaos, trying to figure
out what had happened. We looked around us, up the beach and down the
beach, hopefully to draw sympathy from those similarly affected. What we
did see, was unbelievable. Not one other person on either side of us had
been affected by the wave. They were looking at us in amazement,
wondering, as we were, what this was all about. It was like a hand had
reached out from the sea and struck us intentionally and specifically.
Gail looked at me and said jokingly "I wonder what we did wrong?". But
the sense that something was not right was still with me. I turned to
Gail and said "let's just get out of here."
It was business as usual at the Wagner household at 10:30 p.m.
Gail and I were getting ready to go to bed and the kids were getting
ready to go out. We always used to joke about that; if the kids were
going out, it must be time for bed. Leslie was 18 and Carrie was 17 and
they usually got a late start. They weren't going anywhere in
particular, just around with their friends. Neither of them had a car,
so it was "shoeleather express" unless they could get a ride from
someone. They had a 1:00 a.m. curfew and they were almost always late,
sometimes offering an obligatory "sorry!" but most times, we didn't
bother making an issue. That was always the worst time for me, the
minutes between when they were supposed to be home and when they
actually arrived. Normally, I would lie in bed, waiting for the sound of
the door before falling asleep. Gail would always fall asleep and kid me
about being such a worrier. This particular night, however, I went right
to sleep.
The phone was on my side of the bed, and when it rang at 12:45
a.m., I picked it up on the 2nd ring. It was Paula, one of the local
kids. She asked me if anyone had called me. I said "no, why would
anyone call me"? And then I heard the words that I had hoped I would
never hear in my life. "There's been an accident." I turned to Gail and
she was awake. She looked at me and said "I know, I heard it." We both
jumped up and threw on some clothes and jumped into the car.
Not a word was spoken between us. I raced down the block and
around the corner onto Stewart Avenue. When I got to the corner, the
light was red, but ahead of me on the other side of the intersection I
could see the flashing red lights and the police cars. The rear end of a
blue firebird was wrapped almost completely around a tree on the corner
of Grand Blvd. I knew that car, it was always parked across the street
from my house. It belonged to the kid that lived across the street. I
stopped and we both jumped out and ran up to the car. People tried to
stop us, I don't know why. I guess it's instinctive and comes from
watching too much TV. When I got to the side of the car, Leslie and Gene
were sitting in the front seat. Both appeared dazed, but were conscious.
I looked for Carrie, but she wasn't there. I asked Leslie where she was,
but she didn't answer me. I asked her if she was hurt and she just shook
her head. I was relieved that she appeared to be alive and not seriously
hurt, and I turned to one of the onlookers and asked them if any of them
had seen Carrie. I was assuming that she had gone with someone else, or
perhaps was already home. The lady that lived in the house gave me the
word. They had just taken her away in the ambulance.
I got into the car and drove as fast as I could towards the
hospital. Further on up the road I could soon see the ambulance ahead of
us. Eventually we caught up with it and I remember wondering why their
sirens and lights were off. And why they were going so slow. The
ambulance pulled into the ER and I was right behind. I rushed from my
car and as they were opening the doors, I could see Carrie lying there
on the stretcher. It suddenly occurred to me why they were driving so
slowly. I was certain she was dead.
A lot has happened in the 10 years that have passed since that
night. Carrie has spent many months in hospitals and has had almost a
dozen surgeries. And every August 4th, I can't help remembering.
Someone drove me home that day and I walked into my empty house and I
went into the library and sat down in front of the computer. I posted my
first message on the compuserve bulletin board. For no other reason
than to keep from going insane. I've been at it pretty much continuously
for ten years. It seems to me like it's time to move on.
Carrie got married yesterday. Almost exactly 10 years to the day
after the accident. I don't know what the future holds for her or me.
But we've reached this point and it's time to turn the page. What this
means exactly, I don't know either. I haven't been back to Jones Beach
in the past 10 years. But tonight I think Gail and I will pack up our
car and take a ride there. And we'll set up our sand chairs at the high
tide line and open our books and newspapers and wait. To see what happens.
Jim Harrison · 4 August 2004
"So, we must analyze why the debate goes on." -Charlie Wagner
The debate goes on because one side has huge non-scientific interests in keeping it going. Same reason shrewd and determined lawyers can be found to defend the proposition that O.J. didn't kill his wife. It pays. Literally.
charlie wagner · 4 August 2004
Steve Reuland · 4 August 2004
Great White Wonder · 4 August 2004
Jim Harrison · 4 August 2004
While evolutionary issues are frequently debated inside legitimate science, the reality of evolution hasn't been in question since around 1900. There is no battle over evolution inside the sciences. That war has been over since Victoria was queen of England.
Meanwhile, the question at issue in the noisy squabbles on this thread has nothing to do with biology, which has long since moved on. It is a political and sociological question about whether people have to believe something they don't want to believe just because it happens to be true. The smart money is on the continuing viabiilty of denial.
Bob Maurus · 4 August 2004
Charlie,
Thanks for #6056 - you're an alright guy when you're not "being a pain in the ass." Congratulations and best wishes for the future to Carrie, and to you.
charlie wagner · 4 August 2004
Steve Reuland · 4 August 2004
Have I missed something?
I should say so. The merging of evolution with ecology, which took place in the '70s, including the elucidation of kin selection; the merging of genomics with evolutionary theory, incuding the discovery of transposable elements, microsattelites, retroposons, etc; Gilbert's discovery of introns and exons, Ohno's hypothesis of gene duplication, palindromic gene conversion, just about everything else about molecular biology; not to mention some important fossils dug up since then, like feathered dinosaurs, whales with legs, and Lucy. Oh yeah, and a couple of people came up with a hotly debated theory that speciation does not occur gradually.
If you don't think much has changed since 1964, then I suggest you're not in much of a position to criticize evolutionary theory. Perhaps it's because you're fixated on creationism, which only changes in a reactionary sort of way.
charlie wagner · 4 August 2004
Great White Wonder · 4 August 2004
charlie wagner · 4 August 2004
GWW,
"Strange how people who suffer together have stronger connections than people who are most content.
I don't have any regrets, they can talk about me plenty when I'm gone.
You always said people don't do what they believe in, they just do what's most convenient, then they repent.
And I always said, "Hang on to me, baby, and let's hope that the roof stays on."
Frank J · 4 August 2004
Gav · 4 August 2004
Jim Harrison commented in #6037
"One of the unspoken assumptions of creationism is the belief, shared by almost all undergraduates, that the world is obligated to be easy to understand. It isn't."
Some bits are easy though. Leave all talk about species to the twitchers, the splitters and the lumpers.
If this is any sort of pub we should be setting the world to rights.
Since neither side can agree on their own consistent definitions of species or kind as the case may be, we have an opportunity. Deem the creationists' kind and the biologists' clade to be equivalent, and identical, since nobody will know the difference. Everybody can agree* chimps can't evolve into h. sap and that all of us reading this are kindred deuterostomes** apart from archie the cockroach and possibly one or two others.
So that's that. Only material difference is over the extent to which God*** may have tinkered with our genes along the way. Well, who's ever going to know in this life. Re-label ID "punctuated creation" so we all know what's what, and I'm sure we can all get along. Another round of drinks before we go home.
* and unite against the evil spectre of Margulian miscegenation destroying the integrity of nested hierarchies and family life.
** even the jellies. Hey it's not as though great-aunt Salp is near kin, that we should take on so.
*** that is, not some cr*ppy sub-contractor designer. One God, the Book says.
Pity about Kansas though, pity indeed for the USA, because a few fundamentalists' wordly-wise ambition combined with their evident hatred of science is a very thick wedge. Are you going through a crisis of confidence over there, an echo of the closure of the gate of ijtihad? Ironic, and spooky, if the USA were to lose its pre-eminence in the present century for the same reasons (according to some) as the Arabs lost theirs in the middle ages.
charlie wagner · 4 August 2004
ARCHAEOPTERYX IS A BIRD, GOSH DARN IT!!
Nature 430, 666 - 669 (05 August 2004);
The avian nature of the brain and inner ear of Archaeopteryx
PATRICIO DOMÍNGUEZ ALONSO1, ANGELA C. MILNER2, RICHARD A. KETCHAM3, M. JOHN COOKSON5 & TIMOTHY B. ROWE4
1 Departamento de Paleontologia, Universidad Complutense de Madrid, Ciudad Universitaría, 28040 Madrid, Spain
2 Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
3 High-resolution X-ray CT Facility,
4 Department of Geological Sciences, 1 University Station C1110, University of Texas at Austin, Austin, Texas 78712, USA
5 University of Hertfordshire, Hatfield, Herts AL10 9AB, UK
Correspondence and requests for materials should be addressed to A.C.M. (A.Milner@nhm.ac.uk).
Archaeopteryx, the earliest known flying bird (avialan) from the Late Jurassic period, exhibits many shared primitive characters with more basal coelurosaurian dinosaurs (the clade including all theropods more bird-like than Allosaurus), such as teeth, a long bony tail and pinnate feathers. However, Archaeopteryx possessed asymmetrical flight feathers on its wings and tail, together with a wing feather arrangement shared with modern birds. This suggests some degree of powered flight capability but, until now, little was understood about the extent to which its brain and special senses were adapted for flight. We investigated this problem by computed tomography scanning and three-dimensional reconstruction of the braincase of the London specimen of Archaeopteryx. Here we show the reconstruction of the braincase from which we derived endocasts of the brain and inner ear. These suggest that Archaeopteryx closely resembled modern birds in the dominance of the sense of vision and in the possession of expanded auditory and spatial sensory perception in the ear. We conclude that Archaeopteryx had acquired the derived neurological and structural adaptations necessary for flight. An enlarged forebrain suggests that it had also developed enhanced somatosensory integration with these special senses demanded by a lifestyle involving flying ability.
charlie wagner · 4 August 2004
ARCHAEOPTERYX IS A BIRD, GOSH DARN IT!!
Nature 430, 666 - 669 (05 August 2004); doi:10.1038/nature02706
The avian nature of the brain and inner ear of Archaeopteryx
PATRICIO DOMÍNGUEZ ALONSO1, ANGELA C. MILNER2, RICHARD A. KETCHAM3, M. JOHN COOKSON5 & TIMOTHY B. ROWE4
1 Departamento de Paleontologia, Universidad Complutense de Madrid, Ciudad Universitaría, 28040 Madrid, Spain
2 Department of Palaeontology, The Natural History Museum, Cromwell Road, London SW7 5BD, UK
3 High-resolution X-ray CT Facility,
4 Department of Geological Sciences, 1 University Station C1110, University of Texas at Austin, Austin, Texas 78712, USA
5 University of Hertfordshire, Hatfield, Herts AL10 9AB, UK
Correspondence and requests for materials should be addressed to A.C.M. (A.Milner@nhm.ac.uk).
Archaeopteryx, the earliest known flying bird (avialan) from the Late Jurassic period, exhibits many shared primitive characters with more basal coelurosaurian dinosaurs (the clade including all theropods more bird-like than Allosaurus), such as teeth, a long bony tail and pinnate feathers. However, Archaeopteryx possessed asymmetrical flight feathers on its wings and tail, together with a wing feather arrangement shared with modern birds. This suggests some degree of powered flight capability but, until now, little was understood about the extent to which its brain and special senses were adapted for flight. We investigated this problem by computed tomography scanning and three-dimensional reconstruction of the braincase of the London specimen of Archaeopteryx. Here we show the reconstruction of the braincase from which we derived endocasts of the brain and inner ear. These suggest that Archaeopteryx closely resembled modern birds in the dominance of the sense of vision and in the possession of expanded auditory and spatial sensory perception in the ear. We conclude that Archaeopteryx had acquired the derived neurological and structural adaptations necessary for flight. An enlarged forebrain suggests that it had also developed enhanced somatosensory integration with these special senses demanded by a lifestyle involving flying ability.
Pim van Meurs · 4 August 2004
Yawn, once again Charlie seems to have missed the point. 'Many shared primitive characters with more basal dinosaurs.
Sigh. And why post it twice... Do you think it would increase the level of your understanding?
charlie wagner · 5 August 2004
Jack Krebs · 5 August 2004
Question for Charlie - suppose we could look back at the biological ancestors of Archaeopteryx - its figurative parents, grandparents, great-grandparents, etc. Were they all "ever-loving, flying around with feathers, gosh darn BIRD
!!"?If so, where did the first one of those come from, and when?
charlie wagner · 5 August 2004
RBH · 5 August 2004
charlie wagner · 5 August 2004
Jack Krebs · 5 August 2004
So Charlie, are you saying that you accept common descent but that you believe outside intelligent agency must have been responsible at times for the transition from one kind of organism (at whatever taxonomic level you think this happens) to another? Is that your position?
charlie wagner · 5 August 2004
~DS~ · 5 August 2004
***FYI-Joe Carter is discussing and challenging Ed and Steve by
"As you might expect, not everyone agrees. Ed Brayton calls it "a delightfully ridiculous little article" and Steve Reuland says it "proves that there really is no rock-bottom when it comes to anti-evolutionist diatribes."
Don't you think you are being a bit misleading?
My goal was to let this Blog know that your Blog was talking about this Blog...I assume both Blogs are interested in traffic.
Pim van Meurs · 5 August 2004
Pim van Meurs · 5 August 2004
charlie wagner · 5 August 2004
Great White Wonder · 5 August 2004
Pim van Meurs · 5 August 2004
Sigh... No wonder you seem to me to be still confused about evolutionary theory. Both sites form exellent (but not exhaustive) sources of information. And no I am not depressed other than exasperated by the extent of your knowledge of evolutionary theory. Compouned by what I see as a reluctance on your part to learn from relevant sites leading you to repeat your errors.
Your statement about Archie being a bird and thus not a transitional is well... silly. Especially in a classification which forces any animal into a particular class/family/genus...
Of course when going beyond the simplistic terms of bird/reptile and actually one looks at the arguments one may come to understand why knowledgable people consider Archie to be a good example of a transitional. But I forgot, you deny any evidence for transitionals... But then again you also referred to DNA as intelligent?
Pim van Meurs · 5 August 2004
Pim van Meurs · 5 August 2004
charlie wagner · 5 August 2004
charlie wagner · 5 August 2004
charlie wagner · 5 August 2004
Pim van Meurs · 5 August 2004
Well that describes the full extent of Charlie's rebuttal quite eloquently.
Has Charlie ever spent the time researching these issues I wonder?
charlie wagner · 5 August 2004
Pim van Meurs · 5 August 2004
charlie wagner · 5 August 2004
Pim van Meurs · 5 August 2004
Seems Charlie is willing to ignore all the evidence contrary to his claims (and there are many).
Sigh, this truely saddens me, someone making so many assertions in spite of the vate amount of contradicting data. What a waste of time and effort.
Steve Reuland · 5 August 2004
This has become way too long and has drifted far afield of the original topic, so I'm closing it. Sorry Charlie, I guess Pim gets the last word. Maybe it would be a good idea to talk about the new Archie study on the Bathroom Wall, or maybe Pim can start a thread about it.