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Sunday, May 15, 2005

Niobrara

What do you think of when someone mentions the word "Kansas"? Maybe what leaps to your mind is that it is a farming state that is flat as a pancake, or if you've been following current events, the recent kangaroo court/monkey trial, or perhaps it is the drab counterpart to marvelous Oz. It isn't exactly first on the list of glamourous places. I admit that I tend to read different books than most people, so I have a somewhat skewed perspective on Kansas: the first thing I think of is a magic word.

Niobrara.

Late in the 19th century, there was a stampede to the American West to search for fossils of those spectacular beasts, the dinosaurs. Entrepreneurs everywhere were in on it—P.T. Barnum bought up old bones for his shows—and even scientists got caught up in the bone fever. Edward Drinker Cope of the Philadelphia Academy of Natural Sciences and Othniel Charles Marsh of Yale were famous rivals in the bone wars, sending teams of men to Wyoming and Utah and Colorado and other Rocky Mountain states to collect the bones of the extinct terrestrial behemoths of the Mesozoic. Kansas was also a target, most famously by the Sternberg family, but it had a different reputation: Kansas is the place to go to find sea monsters.

There is a geological formation in Kansas called the Niobrara Chalk. Actually, it's not just in Kansas; it extends all the way up into Canada, but the Niobrara has been exposed by erosion over much of northwestern Kansas, making it easy to dig into. And this is where the Sternbergs and Cope and Marsh went hunting for sea monsters.

coccolithophore
via ESA

Chalk is interesting stuff. It's made of a mineral calcium carbonate, that is formed into the shells of microscopic, one-celled golden brown algae. These Chrysophyceae are photosynthesizing organisms that float in large numbers at the surface of the sea, gather sunlight for energy and scavenging calcium dissolved in the water to build their protective shells. They occasionally shed the the minute calcium plates, and when the plants die, their skeletons drift slowly downward. The seas have a slow, soft, invisible rain of tiny flecks of calcium carbonate that very, very slowly builds up at the bottom.

The Niobrara Chalk formation is 600 feet thick.

It was building up for a long, long time, tens of millions of years. The exposed chalks of northwestern Kansas are also old, dating to between 87 and 82 million years ago, near the end of the Mesozoic era and deep in the Late Cretaceous (not up on your geological time scale? Here's a simple chart of geological eras.)

The inescapable conclusion is that Kansas was under water during the age of the dinosaurs. During the Mesozoic, the world was warm and the oceans were at a high level, and the entire central part of North America was a great, shallow, inland sea, a warm soup rich in microorganisms that were busily living and dying and slowly accumulating into deep dense chalk beds on the bottom. The world looked a bit like this:

Mesozoic inland sea
via Oceans of Kansas

It wasn't just coccolithophores living there, though. Shallow seas are fertile places for life, and there were vast shoals of fish and nautiloids, dense layers of bottom-dwelling molluscs and echinoderms, and amazing predators. Here's a bulldog-jawed, snaggle-toothed Xiphactinus—over 20 feet long and 800 pounds of ferocious muscle.

Xiphactinus
Xiphactinus

There were also snaky-necked plesiosaurids feasting on the smaller fish. These are genuinely weird animals—we have nothing comparable to them today—yet they were diverse and successful and found in numbers in the Niobrara Chalk.

Elasmosaur
Elasmosaurus
Thalassomedon
Thalassomedon
from Sea Dragons: Predators Of The Prehistoric Oceans, by R Ellis

The predatory king of the Niobraran Sea was this fellow, Tylosaurus, a mosasaurid that reached lengths of up to 50 feet. It's a giant, air-breathing reptile, and is probably most comparable to a killer whale.

Tylosaurus
Tylosaurus
from Sea Dragons: Predators Of The Prehistoric Oceans, by R Ellis

I've only briefly visited modern Kansas, but the Kansas of my imagination is a fiercely exotic ocean, a warm and savage sea richer than any place still extant. Try mentioning the magic word "Niobrara" to a paleontologist, or any enthusiast familiar with Mesozoic reptiles…their eyes will light up as it conjures visions of the world of 85 million years ago, a world well documented in the incredible fossil beds of Kansas. It's a powerful, evocative word that links us to a wealth of evidence and a complex, fascinating history.

Reading about the ridiculous anti-evolution trial going on there was rather depressing. It isn't just that the creationist arguments are so poor, but that they are making them in Kansas, where beneath their very feet are the relics of an ancient world that show them to be wrong. Don't schoolchildren there take pride in the paleontological wealth of their home? Do the people bury their imaginations and avoid thinking about the history that surrounds them?

During the course of the hearings, the lawyer on the side of science, Pedro Irigonegaray, asked several of the witnesses for Intelligent Design creationism what they thought the age of the earth was. It's a simple, straightforward question with a simple answer: about 4.5 billion years. The Intelligent Design creationists found it difficult. Some answers were ludicrous, such as Daniel Ely's and John Sanford's assertion that the earth was between 10 and 100 thousand years old. Others were evasive: Stephen Meyer and Angus Menuge refused to answer. Some of these "qualified witnesses" were embarrassingly ignorant: William Harris could only say, "I don't know. I think it's probably really old.". All of this is in line with the intellectually flaccid position of the godfather of the Intelligent Design movement, Phillip Johnson, who has bravely announced that "I have consistently said that I take no position on the age of the earth".

Mention "Niobrara" to these people and their eyes will not light up. At best you might get dull-eyed incomprehension, and more likely you will see shifty-eyed evasion. Yet these are the characters who want to dictate the scientific content of our children's educations. I swear, if there were any truth to their metaphysical codswallop, the shades of Cope and Marsh and the Sternbergs would have manifested in that courtroom to denounce them, and the floor would have cracked open beneath their feet to allow a spectral tylosaur to rise up and gulp them down.

There are greater truths in the stones of Niobrara than in the dissembling and ill-educated brains of the fellows of the Discovery Institute. We need to teach the evidence, not this phony, ginned-up controversy from a gang of poseurs and theocrats.

(crossposted to The American Street)


Trackback url: http://pharyngula.org/index/trackback/2298/XPUBtwGK/

Comments:
#25043: — 05/15  at  02:50 PM
Bravo!

When i think of Kansas i think of where i grew up, ran around outside, and had parents and schools that nurtured my scientific inquiry and love of nature. But we left there when i was 11 (1985) and moved to California. i am extreemly grateful for both my memories of Kansas and the fact that we got out before the politicians decided that fear and dogma should be taught rather than the beauty in nature. But i am so sad for all those children who may be taught to never investigate the wonders of the natural world but to instead hide behind dogma.



#25046: Dan S. — 05/15  at  03:17 PM
" . . . the shades of Cope and Marsh and the Sternbergs would have manifested in that courtroom to denounce them, and the floor would have cracked open beneath their feet to allow a spectral tylosaur to rise up and gulp them down."

oh, that would have been so *cool!*
Maybe _that's_ what the Discovery Channel should do next . . . .



#25049: — 05/15  at  04:03 PM
Great post. It reminds of this essay by T.H. Huxley called <a href = "http://aleph0.clarku.edu/huxley/CE8/Chalk.html">On a Piece of Chalk</a>



#25050: Eva Young — 05/15  at  04:43 PM
Great post. I took historical geology in college - and loved it - but don't recall this particular story.



#25052: coturnix — 05/15  at  04:51 PM
Lovely, lovely, so exciting!



#25054: — 05/15  at  06:12 PM
Very nice. Reminds me of the information center set up near Dayville, OR. An area currently as dry as a bone except for the small river running nearby. I was absolutely amazed when I saw the information inside showing the swamps and jungle and exotic lifeforms that had been there before.



#25055: — 05/15  at  06:17 PM
http://www.nps.gov/joda/



#25056: — 05/15  at  07:06 PM
All of this is in line with the intellectually flaccid position of the godfather of the Intelligent Design movement, Phillip Johnson, who has bravely announced that "I have consistently said that I take no position on the age of the earth".


Hmmmm, has Johnson finally decided to take a position on the Earth's age? According to today's Washington Post he has:

Now comes Johnson, a devout Presbyterian and accomplished legal theorist, and he doesn't dance on the head of biblical pins. He agrees the world is billions of years old and that dinosaurs walked the earth.


Or is this another example of Johnson being two-faced when it comes to the age of the earth? When speaking to the faithful (eg. the Touchstone article) he is coy and states that he takes no position on the Earth's age, when speaking to the secular media he has no problem with the Earth being billions of years old.



#25058: — 05/15  at  07:40 PM
http://tomburka.com/mt2/mt-tb.cgi/796



#25060: — 05/15  at  09:15 PM
To me, Kansas = Wizard of Oz. Oz was a beautiful place, but it certainly had its dark side.



#25065: — 05/15  at  10:31 PM
when i think of kansas i think of Split Lip Rayfield.. They are a very awesome bluegrass band and they deserve free promotion from the likes of me at the expense of my comment reputation.



#25071: coturnix — 05/15  at  11:39 PM
My association changed over time. When I was a kid, it was "We're not in Kansas any more", a strange place over the ocean.

A dozen years ago, it became associated with its miserable senator, Bob Dole, who reminds me of Ka, the snake from the "Jungle Book" movie.

Later, when you mention Kansas, I thought of loony Creationists.

Then, "What's the Matter with Kansas?"

Then, FLATTER than the pancake.

Now, I guess, back to Scopes 2.0....



#25072: — 05/16  at  01:15 AM
David Hume:

no testimony is sufficient to establish a miracle, unless the testimony be of such a kind, that its falsehood would be more miraculous, than the fact, which it endeavours to establish....' When anyone tells me, that he saw a dead man restored to life, I immediately consider with myself, whether it be more probable, that this person should either deceive or be deceived, or that the fact, which he relates, should really have happened. I weigh the one miracle against the other; and according to the superiority, which I discover, I pronounce my decision, and always reject the greater miracle. If the falsehood of his testimony would be more miraculous, than the event which he relates; then, and not till then, can he pretend to command my belief or opinion.



#25075: — 05/16  at  05:48 AM
Kansas to me equates 4th of July, but that's because the only two times I've been in the US, I was in Kansas on the 4th of July (once in Topeka and once in a small town called Parsons). Next time I'm in the US on the 4th of July, I really plan to be somewhere else than Kansas.



's avatar #25084: ajmilne — 05/16  at  07:55 AM
When I think of Kansas, I think of the native Kansan with whom I happen to work--or more specifically, I think of him wincing, when I tell him what's in the news about his home state this week (the current top story in Google news searching on 'Kansas' unsurprisingly enough, is IDC-related).

I think I'm gonna think of Niobrara too, from now on, tho'.



's avatar #25092: DouglasG — 05/16  at  08:53 AM
I am often amazed at how much I learn at this site. Perhaps Kansas should make Pharyngula required reading in their science classrooms. Most of this post is packed with good information for a HS science student!

Douglas E. Gogerty
-----
“No, I’m from Iowa. I just work in outer space.”
-James T. Kirk



#25094: — 05/16  at  09:00 AM
That's a very lovely coccolithophore. It's so strange and sad that there are people who could look at that and find it marvellous but reject the natural processes leading to it as offensive to their world-view. It's a little like admiring a mandelbrot and then saying they hate, don't understand or don't believe in complex algebra and therefore no-one else should be allowed investigate it.

You might think that is an unlikely analogy; but someone on the BBC boards really did once complain (among many other silly anti-science things) that imaginary numbers weren't real. Much metaphorical rolling-on-the-floor-laughing took place. They then waited for the BBC to delete the posts (an automatic 40 day thing) before coming back and denying they had said lots of false things about science - as if the rest of us weren't supposed to have memories of our own.

It is also an amusing coincidence that the Dover schools were having such trouble with reality-denying creationists while Dover art books publish beautiful images of biological forms. As an additional twist, the one I'm looking at again now as a result of your post (a book which I bought a couple of decades ago and which someone nearly bought me again just the other month!) has plates by Ernst Haeckel - a name guaranteed to set some creationists frothing at the mouth with book-burning zeal.



#25097: Ayn Clouter — 05/16  at  09:37 AM
Ernst Haeckel's pictures of microscopic forms always seemed to me one of the two best refutations (the other being Hubble images) of the old line that Euclid alone had looked on beauty bare.



#25098: — 05/16  at  09:46 AM
Poetry, Dr. Myers.

Someone mentioned Bob Dole* -- Dole is another sort of dinosaur from a previous age. Wounded and hurting from World War II, a group of people in Dole's hometown got together and raised some money to help him get as much medical help as possible, at least to stop the pain. He, being a good citizen of Kansas, asked what he could do to thank them. They said, to show thanks, 'take this money and go to college.' Then, they got more money, and said 'go become a lawyer -- we need a good one here.' He did. He got educated, got a law degree and became a prosecutor and lawyer serving his hometown. Then, when a vacancy occurred in the Congressional delegation, this same group asked Mr. Dole to run, and he won. During his long career in Congress, he constantly went back to that hometown and consulted with those people who did what they could, beyond the call of neighborly duty.

Can you imagine the current members of the Kansas state school board doing something like that? After what they've said and done, can you imagine them writing out checks and telling some kid to "go get educated?" Doing good deeds for a wounded vet, with no strings attached, urging the best possible education, is about as much an extinct species in Kansas, we might be led to suspect, as any 20-foot fish with nasty teeth.

I suspect that the Kansas school board is not representative of all the people in Kansas. Certainly they do not represent what is good, noble, and just about the state.

* (No, I don't agree with all of Mr. Dole's politics, either -- but it's still a great, American story.)



#25103: judgeMC — 05/16  at  10:50 AM
Are there places where you can go dig in Kansas? That sounds like it would be a lot of fun and a great learning experience.

Maybe there should be a million scientists march on Kansas to protest the teaching of ID.



#25123: Auguste — 05/16  at  05:04 PM
If I lived in Kansas, I'd be ready to countersue the moment my son entered a school teaching intelligent design - and I'm a Christian.



#25128: — 05/16  at  05:56 PM
Way back when Mad Magazine (I think, thought it could have been National Lampoon) had a bunch of fake license plates with sayings. The one for Kansas was...

"Gateway to Nebraska"



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Trackback: Defending Evolution Tracked on: Newton's Binomium (72.9.234.70) at 2005 05 17 07:28:52
This weekend I bought a copy of a book called Science and Creationism, a collection of essays edited by Ashley Montague and published in 1984 (a nice Orwellian coincidence), two years after the trial which reversed Arkansas' decision to give equal ti...



Trackback: Saying nice things about Kansas Tracked on: C8H10N4HO2O2 (72.9.234.70) at 2005 05 17 09:23:35
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