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Were flying reptiles too large to fly?

The following is from the U.K. Telegraph

They carried away Raquel Welch in One Million Years BC and were ferocious in the Jurassic Park series of films.

But now it seems pterodactyls, the terror of the prehistoric skies, may have struggled to get off the ground.

The new research claims that the ancient reptiles, which could grow to the size of small aeroplanes, were too heavy to fly — even with their massive wings.

The problem, according to a leading scientist, is that they could not flap fast enough to create the thrust to keep their enormous bulk airborne.

This is a well-known problem for paleontologists, that recently made the “news” again. Birds can fly because they have lighter bones than most mammals and are light enough to create the momentum to take off from the earth with their wings. Flying reptiles — which were related to, but in a different class than dinosaurs — were so massive that the mechanics of pterosaur flight are not completely understood. But it is equally unlikely that this group of animals was not capable of powered flight.

The problem vanishes if it is proposed that the atmosphere at this time had a higher barometric pressure, being several times thicker or more “soupy” than it is today. In fact, this helps to explain the hugeness of nature in general — how the atmosphere could support giant ferns, plants, trees, insects, dinosaurs, and of course, pterosaurs — during this era.

Implications For Radiometric Dating

The dinosaur era — spanning 300 million years from 350 to 50 million years ago, the Triassic, the Jurassic and the Cretaceous — commenced with an explosion of huge and prolific plant forms. At the start of the Triassic period coal is noticeable by its absence throughout the world. This is known as the “coal gap.” Most of the coal and fossil fuel of the planet is thought to have been formed after the beginning of the Triassic period. During this era, the entire planet existed in a tropical climate. Huge lush rain forests and swamps supported huge insect and animal forms. It is further thought that warm blooded animals did not come on the scene until the planet cooled.

But this theory of a dense atmosphere planet has huge implications for radiometric dating models. Carbon-14 dating relies on the presupposition that the amount of radiation entering the earth’s atmosphere has been fairly constant over the time period being studied. Potassium-argon dating and uranium-lead dating is thought to be more stable than this and the formation of these isotopes are not dependent on cosmic rays. However, it is known that the effect of cosmic rays bombarding these isotopes can produce an an acceleration or deceleration of decay.

If we accept the “super-pressure tropical atmosphere hypothesis” there would be a significantly lower amount of radioactive material and a higher rate of radioactive decay since the sun’s radiation was hindered by the higher moisture environment of the earth’s protective shield. The resulting radiometric dating models would yield dates much higher than the actual age if this is not taken into account.

The mistake is to assume that the amount of cosmic radiation entering the earth’s atmosphere has been constant since the age of dinosaurs. This would have its most immediate effect on Carbon-14 dating, which would affect mainly recent archaeological finds now dated at less than 70,000 years. For the purpose of dating flying reptile fossils, potassium argon and uranium-lead dating is used. The effect of the sun on these radioacative isotopes is more complicated to describe, but the interaction of cosmic rays with the earth’s magnetic field has been shown to have an effect on the enrichment and rate of decay of potassium-argon and uranium-lead.

Without assuming the Genesis pre-flood earth model proposed by many creationists, I’d like to see some paleontologists do a recalibrated study of fossils based on various atmosphere models that differ from the constant model now assumed. The hypothesis ought to be considered that the dinosaur era was closer to us in time than is now proposed.

Comments

Your comments are welcome!

!!!!!!!!!!Great Post!!!!!!!!

Posted by  Anonymous on 10/04/2009 08:46 AM #

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Frank Schaeffer Will You Please Shut Up! (Book)

High Quality Paperback — 200 pages

A Reasonable Response to Christian Postmodernism

Includes a response to the book Christian Jihad by Colonel V. Doner

The title of this book is a misnomer. In reality, I am not trying to get anyone to shut up, but rather to provoke a discussion. This book is a warning about the philosophy of “Christian postmodernism” and the threat that it poses not only to Christian orthodoxy, but to the peace and prosperity our culture as well. The purpose is to equip the reader with some basic principles that can be used to refute their arguments.

Part 1 is a response to some of the recent writings by Frank Schaeffer, the son of the late Francis Schaeffer. This was originally written as a defense against Frank’s attacks on pro-life street activism – a movement that his father helped bring into being through his books, A Christian Manifesto, How Should We Then Live? and Whatever Happened to the Human Race? These works have impacted literally hundreds of thousands of Christian activists.

Part 2 is a response to Colonel Doner and his book, Christian Jihad: Neo-Fundamentalists and the Polarization of America. Doner was one of the key architects of the Christian Right that emerged in the 1980s, who now represents the disillusionment and defection many Christian activists experienced in the 1990s and 2000s. There is still great hope for America to be reformed according to biblical principles. As a new generation is emerging, it is important to recognize the mistakes that Christian activists have made in the past even while holding to a vision for the future.

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Martin Luther: Digitally Remastered 1953 Classic (DVD)

“Here I stand … I can do no other!”

With these immortal words, an unknown German monk sparked a spiritual revolution that changed the world.

The dramatic classic film of Martin Luther’s life was released in theaters worldwide in the 1950s and was nominated for two Oscars. A magnificent depiction of Luther and the forces at work in the surrounding society that resulted in his historic reform efforts, this film traces Luther’s life from a guilt-burdened monk to his eventual break with the Roman Catholic Church.

Running time: 105 minutes

Special offer: Order 5 or more for $5 each.

Watch a clip from Martin Luther.

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Abortion Clinic 911 Calls (DVD)

Exposes the Dangers of Abortion to Women!

These shocking eyewitness accounts expose the dangers of abortion not only to unborn children, but to the health and lives women as well. An antidote to the smokescreens of the liberal media, these short clips show what really happens in and around abortion clinics.

Although the content is emotionally gut-wrenching, these videos have been used in church seminars and small groups to educate Christians on the abortion issue and to lead people toward a pro-life position. Contains 2 hours and 40 minutes of materials that can be shown separately.

Watch these pro-life videos on-line.

“These videos helped change my mind from pro-choice to pro-life. Your videos are what did it for me. I will be walking in next year’s March For Life in San Francisco.” — A. Jackson, California

“I was going to have an abortion until I saw your video. Praise Jesus!”
— M. Drew, YouTube Commenter

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The Abortion Matrix: Defeating Child Sacrifice and the Culture of Death (DVD)

Download the free Study Guide!

Is there a connection between pagan religion and the abortion industry?

This powerful presentation traces the biblical roots of child sacrifice and then delves into the social, political and cultural fall-out that this sin against God and crime against humanity has produced in our beleaguered society.

Conceived as a sequel and update to the 1988 classic, The Massacre of Innocence, the new title, The Abortion Matrix, is entirely fitting. It not only references abortion’s specific target – the sacred matrix where human beings are formed in the womb in the very image of God, but it also implies the existence of a conspiracy, a matrix of seemingly disparate forces that are driving this holocaust.

The occult activity surrounding the abortion industry is exposed with numerous examples. But are these just aberrations, bizarre yet anomalous examples of abortionists who just happen to have ties to modern day witchcraft? Or is this representative of something deeper, more sinister and even endemic to the entire abortion movement?

As the allusion to the film of over a decade ago suggests, the viewer may learn that things are not always as they appear to be. The Abortion Matrix reveals the reality of child-killing and strikes the proper moral chord to move hearts to fulfill the biblical responsibility to rescue those unjustly sentenced to death and to speak for those who cannot speak for themselves (Proverbs 24:11,12; 31:8,9).

Speakers include: George Grant, Peter Hammond, RC Sproul Jr., Paul Jehle, Lou Engle, Rusty Thomas, Flip Benham, Janet Porter and many more.

Ten parts, over three hours of instruction!

Running Time: 195 minutes

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The Four Keys to the Millennium (Book)

Foundations in Biblical Eschatology

By Jay Rogers, Larry Waugh, Rodney Stortz, Joseph Meiring. High quality paperback, 167 pages.

All Christians believe that their great God and Savior, Jesus Christ, will one day return. Although we cannot know the exact time of His return, what exactly did Jesus mean when he spoke of the signs of His coming (Mat. 24)? How are we to interpret the prophecies in Isaiah regarding the time when “the earth will be full of the knowledge of the LORD as the waters cover the sea” (Isa. 11:19)? Should we expect a time of great tribulation and apostasy or revival and reformation before the Lord returns? Is the devil bound now, and are the saints reigning with Christ? Did you know that there are four hermeneutical approaches to the book of Daniel and Revelation?

These and many more questions are dealt with by four authors as they present the four views on the millennium. Each view is then critiqued by the other three authors.

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The Abortion Matrix DVD: Update

The Abortion Matrix:
Defeating Child Sacrifice and the Culture of Death

is a 195-minute presentation that traces the biblical roots of child sacrifice and then delves into the social, political and cultural fall-out that this sin against God has produced. You can order this series on DVD, read the complete script and view clips on-line...
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