Recently, a 140-million-year-old hoary called Shenzhouraptor sinensis was rescued in a Yixian segment of China. According to a evolutionary paleontologist Ji Qiang, this hoary was a blank couple twixt dinosaurs as good as birds. The actuality is, however, which this hoary possesses facilities which strife with a evolutionists’ claims about a start of birds. Not usually this fossil, though additionally a sum physique of paleontological interpretation upon a theme is during contingency with a evolutionary theory. “The expansion of birds”, matching to alternative claims done by Darwinism, is no some-more systematic than a angel tale.
Shenzhouraptor sinensis, The Impossible Transitional Form
Evolutionists indicate which Shenzhouraptor sinensis was a transitory form which was equates to to fly as good as hexed both bird as good as dinosaur characteristics. This is, however, is in counterbalance to alternative evolutionist claims upon a start of birds.
Archaeopteryx, a oldest good well good well well known bird, lived 150 million years ago as good as is in most respects no conflicting from drifting birds critical today. Shenzhouraptor sinensis, however, lived 140 million years ago, creation it younger than Archaeopteryx. For which reason, it is unfit for it to be a transitory form, since birds with undiluted feathers as good as a compulsory anatomical have up for moody were critical prior to it.
Archaeopteryx: Recent work shows it to be
“much some-more birdlike than formerly imagined”.
At this point, you need to have it transparent which a evolutionist claims per Archaeopteryx, upon of a element icons of a conjecture of expansion for a final 100 years or so, have mislaid a good understanding of their validity. It has been satisfied which this quadruped was a drifting bird, possessing a undiluted moody mechanism. Attempts to review Archaeopteryx to a invertebrate have unsuccessful entirely.
As Alan Feduccia, a singular of a heading ornithologists in a world, has stated, “Most brand brand new workers who have complicated assorted anatomical facilities of Archaeopteryx have found a quadruped to be most some-more birdlike than formerly imagined,” as good as “the similarity of Archaeopteryx to theropod dinosaurs has been grossly overestimated.” (1)
Another censure per Archaeopteryx is which a theropod dinosaurs, which most evolutionists indicate were Archaeopteryx’ ancestors, essentially arise after it in a hoary record, not prior to it. This, of course, leaves no room for any “evolutionary family tree” to comment for a start of birds.
The Squabbling Evolutionists
The reason for a “dino-bird” as good as “feathered dinosaur” stories which mostly crop up in a evolutionist press is simply an bid upon their partial to uncover which their explain which birds grown from dinosaurs has been proven by hoary discoveries. The actuality is, however, which zero of these fossils has offering any systematic justification during all for which claim. What is more, most evolutionists do not reason it either. For instance, eminent ornithologists Alan Feduccia as good as Larry Martin reason which it is all an erring scenario. A college textbook, Developmental Biology reads:
Not all biologists reason which birds have been dinosaurs. This organisation of scientists stress a differences in in in in in in in in in in in in in in in between dinosaurs as good as birds, claiming which a differences have been as good good for a birds to have grown from progressing dinosaurs. Alan Feduccia, as good as Larry Martin, for instance, contend which birds could not have grown from any good well good well well known organisation of dinosaurs. They disagree conflicting a little of a most critical cladistic interpretation as good as await their explain from developmental biology as good as biomechanics. (2)
Feduccia has this to contend per a topic of reptile-bird evolution:
Well, I’ve complicated bird skulls for twenty-five years as good as you do not see any similarities whatsoever. you usually do not see it… The theropod origins of birds, in my opinion, will be a biggest annoyance of paleontology of a 20th century. (3)
Larry Martin, a dilettante in really aged birds from a University of Kansas, additionally opposes a conjecture which birds have been descended from dinosaurs. Discussing a counterbalance which expansion falls in to upon a subject, he states:
To discuss it you a truth, if you had to await a dinosaur start of birds with those characters, I’d be broke any time you had to get up as good as speak about it. (4)
The feud amongst evolutionists themselves stems from a actuality which there is no justification ancillary an evolutionary start for birds. They can usually set up up speculations, just-so stories which have been imposed upon a public, misleadingly, as “scientific theories”.
The Significant Structural Differences Between Birds And Dinosaurs
Most evolutionists reason which birds grown from little theropod dinosaurs. However, a some-more aged in in in in in in in in in in in in in in in between birds as good as such reptiles reveals which a dual have really graphic features, creation it doubtful which a singular grown from a other.
There have been assorted constructional differences in in in in in in in in in in in in in in in between birds as good as reptiles, a singular of which concerns bone structure. Due to their massive natures, dinosaurs-the ancestors of birds according to evolutionists-had thick, plain bones. Birds, in contrast, as if critical or extinct, have vale structure of a body which have been really light, as they contingency be in sequence for moody to take place.
Another disproportion in in in in in in in in in in in in in in in between reptiles as good as birds is their metabolic structure. Reptiles have a slowest metabolic have up in a animal kingdom. (The explain which dinosaurs had a warm-blooded quick metabolic rate stays a speculation.) Birds, upon a alternative hand, have been during a conflicting finish of a metabolic spectrum. For instance, a physique heat of a sparrow can climb to as most as 48°C (118°F) due to a quick metabolism. On a alternative hand, reptiles miss a capability to umpire their physique temperature. Instead, they display their bodies to object in sequence to comfortable up. Put simply, reptiles devour a smallest appetite of all animals as good as birds a most.
Yet, notwithstanding all a systematic findings, a illogical unfolding of “dinosaur-bird evolution” is still insistently advocated. Popular publications have been definitely lustful of a scenario. Meanwhile, concepts which yield no subsidy for a unfolding have been presented as justification for “dinosaur-bird evolution.”
In a little renouned evolutionist publications, for instance, importance is laid upon a differences in in in in in in in in in in in between dinosaur hip structure of a body to await a topic which birds have been descended from dinosaurs. These differences exist in in in in in in in in in in in in in in in between dinosaurs personal as Saurischian (reptile-like, hip-girdled dinosaurs) as good as Ornithischian (bird-like, hip-girdled dinosaurs). This judgment of dinosaurs carrying hip girdles matching to those of birds is infrequently poorly recognised as justification for a purported dinosaur-bird link. However, a disproportion in hip girdles is no justification during all for a explain which birds grown from dinosaurs. That is because, surprisingly for a evolutionist, Ornithischian dinosaurs do not resemble birds with apply oneself to alternative anatomical features. For instance, Ankylosaurus is a dinosaur personal as Ornithischian, with reduced legs, a hulk body, as good as skin lonesome with beam imitative armor. On a alternative hand, Struthiomimus, which resembles birds in a little of a anatomical facilities (long legs, reduced forelegs, as good as skinny structure), is essentially a Saurischian. (5)
The Unique Structure of Avian Lungs
Another cause demonstrating a stupidity of a reptile-bird expansion unfolding is a have up of avian lungs, which cannot be accounted for by evolution.
Land-dwelling creatures have lungs with a two-directional upsurge structure. Upon inhaling, a air travels by a passages in a lungs (bronchial tubes), finale in little air sacs (alveoli). The sell of oxygen as good as CO dioxide takes place here. Then, upon exhaling, this used air creates a approach behind as good as finds a approach out of a lung by a same route.
In birds however, air follows usually a singular citation by a lungs. The entrance as good as exit orifices have been definitely different, as good as interjection to special air sacs all along a passages in in in in in in in in in in in in in in in between them, air regularly flows in a singular citation by a avian lung. In this way, birds have been equates to to take in air nonstop. This satisfies birds’ tall appetite requirements. Michael Denton, an Australian biochemist as good as a obvious censor of Darwinism, explains a avian lung in this way:
This one-directional upsurge of air is confirmed in respirating in as good as respirating out by a formidable complement of companion air sacs in a bird’s body, which enhance as good as stipulate in such a approach as to safeguard a unbroken smoothness of air by a parabronchi… The have up of a lung in birds, as good as a altogether functioning of a respiratory system, have been definitely unique. No lung in any alternative vertebrate class in any approach approaches a avian system. Moreover, in a necessary sum it is matching in birds. (6)
The critical thing is which a invertebrate lung, with a dual-direction air flow, could not have grown in to a bird lung with a single-direction flow, since it is not probable for there to have been an center indication in in in in in in in in in in in in in in in between them. In sequence for a critical thing to live, it has to keep breathing, as good as a annulment of a have up of a lungs with a shift of pattern would fundamentally finish in death. According to evolution, this shift contingency occur progressively over millions of years, since a quadruped whose lungs do not work will die inside of a couple of minutes.
Michael Denton additionally states which it is unfit to give an evolutionary comment of a avian lung:
…In a box of birds, however, a critical bronchi mangle down in to little tubes which interfuse a lung tissue. These supposed parabronchi in a future stick upon up together again, mixing a loyal circulatory complement so which air flows in a singular citation by a lungs. …Just how such an definitely conflicting respiratory complement could have grown progressively from a customary vertebrate pattern is fantastically formidable to envisage, generally temperament in thoughts which a upkeep of respiratory duty is positively critical to a hold up of an mammal to a border which a smallest malfunction leads to genocide inside of minutes. Just as a plume cannot duty as an organ of moody until a hooks as good as barbules have been co blending to fit together perfectly, so a avian lung cannot duty as an organ of respiration until a parabronchi complement which permeates it as good as a air weal complement which guarantees a parabronchi their air supply have been both rarely grown as good as equates to to duty together in a ideally integrated manner. (7)
In brief, a thoroughfare from a tellurian lung to an avian lung is impossible, since an center form would offer no purpose.
Reptiles (and mammals) inhale in as good as out from a same air vessel. In birds, whilst a air enters in to a lung from a front, it goes out from a back. This graphic pattern is specifically done for birds, which need good amounts of oxygen during flight. It is unfit for such a have up to rise from a invertebrate lung.
Another indicate which needs to be referred to here is which reptiles have a diaphragm-type respiratory system, since birds have an intestinal air weal complement instead of a diaphragm. These conflicting structures additionally have any expansion in in in in in in in in in in in in in in in between a dual lung sorts impossible, as John Ruben from Oregon State University, an concurred management in a margin of respiratory physiology, observes in a following passage:
The commencement stages in a source of a avian intestinal air weal complement from a diaphragm-ventilating forerunner would have necessitated preference for a diaphragmatic hernia in taxa transitory in in in in in in in in in in in in in in in between theropods as good as birds. Such a debilitating condition would have rught away compromised a complete pulmonary ventilatory equipment as good as seems doubtful to have been of any resourceful advantage. (8)
Another engaging constructional pattern of a avian lung which defies expansion is a actuality which it is never dull of air, as good as to illustrate never in risk of collapse. Michael Denton explains a situation:
Just how such a conflicting respiratory complement could have grown progressively from a customary vertebrate pattern though a little arrange of citation is, again, really formidable to envisage, generally temperament in thoughts which a upkeep of respiratory duty is positively critical to a hold up of a organism. Moreover, a singular duty as good as form of a avian lung necessitates a array of a single some-more singular adaptations during avian development… since first, a avian lung is bound rigidly to a physique wall as good as cannot to illustrate enhance in volume and, second, since of a little hole of a lung capillaries as good as a ensuing tall aspect tragedy of any glass inside of them, a avian lung cannot be arrogant out of a collapsed state as happens in all alternative vertebrates after birth. The air capillaries have been never collapsed as have been a alveoli of alternative vertebrate species; rather, as they grow in to a lung tissue, a parabronchi have been from a commencement open tubes filled with as if air or fluid. (9)
In alternative words, a passages in birds’ lungs have been so slight which a air sacs inside their lungs cannot fill with air as good as dull again, as with land-dwelling creatures. If a bird lung ever definitely deflated, a bird would never be equates to to re-inflate it, or would during a really smallest have good worry in you do so. For this reason, a air sacs situated all over a lung capacitate a consistent thoroughfare of air to pass through, to illustrate safeguarding a lungs from deflating.
Of march this system, which is definitely conflicting from a lungs of reptiles as good as alternative vertebrates, as good as is shaped upon a most formidable design, cannot have come about with pointless mutations, theatre by stage, as expansion maintains. Thus, as Denton additionally mentions, a avian lung is sufficient to answer Darwin’s challenge:
“If it could be demonstrated which any formidable organ existed, which could not as if have been shaped by numerous, successive, slight, modifications, my conjecture would positively mangle down.” (10)
Bird Feathers as good as Reptile Scales
Another indomitable opening in in in in in in in in in in in in in in in between birds as good as reptiles is feathers, which have been rare to birds. Reptile bodies have been lonesome with scales, a definitely conflicting structure. The conjecture which bird feathers grown from invertebrate beam is definitely unfounded, as good as is in law disproved by a hoary record, as a evolutionist paleontologist Barbara Stahl once admitted:
How [feathers] arose initially, as if from reptiles scales, defies analysis… It seems, from a formidable building a whole of feathers, which their expansion from reptilian beam would have compulsory an measureless duration of time as good as concerned a array of center structures. So far, a hoary jot down does not bear out which supposition. (11)
A. H. Brush, a highbrow of physiology as good as neurobiology during a University of Connecticut, accepts this fact, nonetheless he is himself an evolutionist: “Every underline from gene have up as good as organization, to development, morphogenesis as good as hankie classification is conflicting [in feathers as good as scales].” (12) Moreover, Professor Brush examines a protein have up of bird feathers as good as argues which it is “unique in in in in in in in in in in in between vertebrates.” (13)
There is no hoary justification to infer which bird feathers grown from invertebrate scales. On a contrary, feathers crop up unexpected in a hoary record, Professor Brush observes, as an “undeniably unique” impression specifying birds. (14) Besides, in reptiles, no epidermal hankie has nonetheless been rescued which provides a starting indicate for bird feathers. (15)
Many fossils have so distant been a theme of “feathered dinosaur” speculation, though minute investigate has regularly disproved it. Alan Feduccia once wrote a following in an essay called “On Why Dinosaurs Lacked Feathers”:
Feathers have been facilities singular to birds, as good as there have been no good well good well well known center structures in in in in in in in in in in in in in in in between reptilian beam as good as feathers. Notwithstanding speculations upon a inlet of a elongated beam found upon such forms as Longisquama (discovered 1969 Russia) … as being featherlike structures, there is simply no demonstrable justification which they in actuality are. (16)
More recently, Feduccia, quoting Brush, has a following thoroughfare upon a start of feathers:
Even birds’ most scalelike features-the leg scutes (scales), claws, as good as a epidermally subsequent beak-are shaped from a singular difficulty of protein, a -keratins. As Alan Brush has created per plume development, “The genes which approach singularity of a avian -keratins paint a poignant dissimilarity from those of their reptilian ancestor.”(17) (Note which a authors pretence a reptilian forerunner for birds, though accept a genetic opening in in in in in in in in in in in in in in in between these.)
National Geographic’s good hit, a undiluted “dino-bird” Archaeoraptor shortly incited out to be a hoax. All alternative “dino-bird” possibilities sojourn as speculation.
All headlines about “dino-birds” is speculative. Many claims upon a theme have incited out to false. For example, a “feathered dinosaur” explain which was put brazen in 1996 with a good media pushing was additionally disproved soon. A reptilian hoary called Sinosauropteryx was found in China, though paleontologists who carefully suspicion about a hoary pronounced which it had bird feathers, distinct complicated reptiles. Examinations conducted a singular year later, however, showed which a hoary essentially had no have up matching to a bird’s feather. (18)
Every alternative hoary which has been put brazen as “feathered dinosaur” in a final 10 years is debatable. Detailed studies have referred to which a structures referred to to have been “feathers” have been essentially collagen fibers.(19) The speculations in actuality stems from evolutionist influence as good as sad thinking. As Feduccia says, “Many dinosaurs have been portrayed with a cloaking of aerodynamic contour feathers with positively no documentation.”(20) (One of a “feathered dinosaurs” in question, namely Archaeoraptor, valid to be a hoary forgery). Feduccia sums a upon all sides up in these terms: “Finally, no feathered dinosaur has ever been found, nonetheless most dinosaur mummies with well-preserved skin have been good well good well well known from opposite localities.” (21)
The Design of Feathers
Another censure for a evolutionists is a actuality which there is such a formidable pattern in bird feathers which a materialisation can never be accounted for though referring to smart design. As you all know, there is a long, unbending partial which runs up a core of a feather. Attached to a missile have been a vanes. The vane is done up of little thread-like strands, called barbs. These barbs, of conflicting lengths as good as rigidity, have been what give a drifting bird a aerodynamic nature. But what is even some-more engaging is which any dart has thousands of even not as big strands trustworthy to them called barbules. The barbules have been continuous to barbicels, with little little hooks, called hamuli. Each strand is bending to an hostile strand, most matching to a hooks of a zipper.
On usually a singular derrick feather, there have been up to 650 hairs upon a executive tube. Each a singular of these is lonesome with a little 650 tinier hairs. And these little hairs have been related together by 350 hooks. The hooks come together matching to a dual sides of a zipper. If a hooks come detached for any reason, it is sufficient for a bird to shake up itself, or, in some-more critical cases, to straighten a feathers out with a beak, for a feathers to lapse to their prior positions.
To explain which a formidable pattern in feathers could have come about by a expansion of invertebrate beam by possibility mutations is definitely simply a peremptory idea with no systematic foundation. Even a singular of a doyens of Darwinism, Ernst Mayr, done this admission upon a theme a little years ago:
It is a substantial aria upon one’s credulity to pretence which finely offset systems such as sure clarity viscera (the eye of vertebrates, or a bird’s feather) could be softened by pointless mutations. (22)
The pattern of feathers additionally constrained Darwin to contemplate them. Moreover, a undiluted aesthetics of a peacock’s feathers had done him “sick” (his own words). In a minute he wrote to Asa Gray upon Apr 3, 1860, he said, “I recollect good a time when a suspicion of a eye done me cold all over, though you have got over this theatre of complaint…” And afterwards continued: “… as good as right away few details of have up mostly have me really uncomfortable. The steer of a plume in a peacock’s tail, during your convenience you gawk during it, creates me sick!” (23)
In short, a huge constructional differences in in in in in in in in in in in in in in in between bird feathers as good as invertebrate scales, as good as a astonishingly complex-and beautiful-design of feathers, obviously denote a invalidity of a explain which feathers grown from beam by blind healthy mechanisms.
Conclusion
The “dino-bird” stories which crop up in a evolutionist press include of inequitable analyses by evolutionist palaeontologists, as good as infrequently even of distortions of a truth. (In fact, a singular of a best-known “dino-bird” discoveries, a Archaeoraptor portrayed by National Geographic as flawless explanation of bird evolution, incited out to be a anything forged constructed by mixing fossils of 5 apart specimens). The “dino-bird” fossils in theme have been as if those of archaic class of bird or of dinosaurs, as good as not a singular of them represents a “missing link” in in in in in in in in in in in in in in in between birds as good as dinosaurs. In fact, as you have seen above, it is unfit for dinosaurs to have grown in to birds as good as insincere bird characteristics by equates to of possibility mutations.
Thus a “dino-bird” hype which rages by a media consists of zero some-more than a last-ditch try to seaside up a collapsed conjecture of evolution. However, scholarship as good as reason will regularly overcome over such misconceptions.
LATEST EVIDENCE: OSTRICH STUDY REFUTES THE DINO-BIRD STORY
Dr. Feduccia: His brand brand new investigate is sufficient to cover up a ‘dino-bird” myth.
The ultimate blow to a “birds grown from dinosaurs” conjecture came from a investigate done upon a embryology of ostriches.
Drs. Alan Feduccia as good as Julie Nowicki of a University of North Carolina during Chapel Hill complicated a array of live ostrich eggs and, once again, resolved that, there can not be an evolutionary couple in in in in in in in in in in in in in in in between birds as good as dinosaurs. EurekAlert, a systematic portal hold by a American Association for a The Advancement of Science (AAAS), reports a following:
Drs. Alan Feduccia as good as Julie Nowicki of a University of North Carolina during Chapel Hill… non-stop a array of live ostrich eggs during assorted stages of growth as good as found what they reason is explanation which birds could not have descended from dinosaurs”…
Whatever a forerunner of birds was, it contingency have had 5 fingers, not a three-fingered palm of theropod dinosaurs,” Feduccia said… “Scientists determine which dinosaurs grown ‘hands’ with digits one, dual as good as three… Our studies of ostrich embryos, however, showed conclusively which in birds, usually digits two, 3 as good as four, which conform to a tellurian index, center as good as ring fingers, develop, as good as you have cinema to infer it,” pronounced Feduccia, highbrow as good as former chair of biology during UNC. “This creates a brand brand new censure for those who demand which dinosaurs were ancestors of complicated birds. How can a bird hand, for example, with digits two, 3 as good as 4 rise from a dinosaur palm which has usually digits one, dual as good as three? That would be roughly impossible.” (i)
In a same report, Dr. Freduccia additionally done critical comments upon a invalidity-and a shallowness-of a “birds grown from dinosaurs” theory:
“There have been indomitable problems with which theory,” he [Dr. Feduccia] said. “Beyond what you have usually reported, there is a time censure in which outwardly bird-like dinosaurs occurred a little twenty-five million to 80 million years after a commencement good well good well well known bird, which is 150 million years old.”
If a singular views a duck structure of a body as good as a dinosaur structure of a body by binoculars they crop up similar, though tighten as good as minute hearing reveals most differences, Feduccia said. Theropod dinosaurs, for example, had curved, serrated teeth, though a commencement birds had straight, unserrated peg-like teeth. They additionally had a conflicting process of tooth implantation as good as replacement.” (ii)
This justification once again reveals which a “dino-bird” hype is usually an additional “icon” of Darwinism: A parable which is upheld usually for a consequence of a peremptory conviction in a theory.
i - David Williamson, “Scientist Says Ostrich Study Confirms Bird ‘Hands’ Unlike Those Of Dinosaurs”, EurekAlert, 14-Aug-2002, http://www.eurekalert.org/pub_releases/2002-08/uonc-sso081402.php
ii - David Williamson, “Scientist Says Ostrich Study Confirms Bird ‘Hands’ Unlike Those Of Dinosaurs”, EurekAlert, 14-Aug-2002, http://www.eurekalert.org/pub_releases/2002-08/uonc-sso081402.php
Under a coop name of Harun Yahya, Adnan Oktar has created a little 250 works. His books enclose a sum of 46,000 pages as good as 31,500 illustrations. Of these books, 7,000 pages as good as 6,000 illustrations understanding with a fall of a Theory of Evolution. You can read, giveaway of charge, all a books Adnan Oktar has created underneath a coop name Harun Yahya upon these websites www.harunyahya.com
(1) Alan Feduccia, The Origin as good as Evolution of Birds, Yale University Press, 1999, p. 81
(2) Scott F. Gilbert, “Did Birds Evolve from a Dinosaurs?,” Developmental Biology, Sixth Edition, section 16.4 (http://www.devbio.com/chap16/link1604.shtml)
(3) Pat Shipman, “Birds Do It… Did Dinosaurs?,” New Scientist, Feb 1, 1997, p. 28
(4) Pat Shipman, “Birds Do It… Did Dinosaurs?,” New Scientist, Feb 1, 1997, p. 28
(5) Duane T. Gish, Dinosaurs by Design, Master Books, AR, 1996. pp. 65-66
(6) Michael Denton, Evolution: A Theory in Crisis, London, Burnett Books Limited, 1985, p. 210-211.
(7) Michael Denton, A Theory in Crisis, Adler & Adler, 1986, pp. 210-212.
(8) J. A. Ruben, T. D. Jones, N. R. Geist, as good as W. J. Hillenius, “Lung Structure And Ventilation in Theropod Dinosaurs as good as Early Birds,” Science, vol. 278, p. 1267.
(9) Michael J. Denton, Nature’s Destiny, Free Press, New York, 1998, p. 361.
(10) Charles Darwin, The Origin of Species: A Facsimile of a First Edition, Harvard University Press, 1964, p. 189
(11) Barbara J. Stahl, Vertebrate History: Problems in Evolution, Dover, 1985, pp. 349-350.
(12) A. H. Brush, “On a Origin of Feathers,” Journal of Evolutionary Biology, vol. 9, 1996, p.132.
(13) A. H. Brush, “On a Origin of Feathers,” Journal of Evolutionary Biology, vol. 9, 1996, p.131.
(14) A. H. Brush, “On a Origin of Feathers,” Journal of Evolutionary Biology, vol. 9, 1996, p.133.
(15) A. H. Brush, “On a Origin of Feathers,” Journal of Evolutionary Biology, vol. 9, 1996, p.131.
(16) Alan Feduccia, “On Why Dinosaurs Lacked Feathers,” The Beginning of Birds, Eichstatt, West Germany: Jura Museum, 1985, p. 76.
(17) Alan Feduccia, The Origin as good as Evolution of Birds, Yale University Press, 1999, p. 128
(18) Ann Gibbons, “Plucking a Feathered Dinosaur,” Science, vol. 278, no. 5341, fourteen November 1997, pp. 1229 - 1230
(19) Ann Gibbons, “Plucking a Feathered Dinosaur”, Science, volume 278, Number 5341 Issue of fourteen November 1997, pp. 1229 - 1230
(20) Alan Feduccia, The Origin as good as Evolution of Birds, Yale University Press, 1999, p. 130
(21) Alan Feduccia, The Origin as good as Evolution of Birds, Yale University Press, 1999, p. 132
(22) Ernst Mayr, Systematics as good as a Origin of Species, Dove, New York, 1964, p. 296.
(23) Francis Darwin, The Life as good as Letters of Charles Darwin, Volume II, From Charles Darwin to Asa Gray, Apr 3rd, 1860