Debunked Vestigial Organs Argument Rises Again

Why have these same vestigial
organ claims been repeated over
and over again for many decades?

 

Why False Evolutionary Claims Persist
for decades or even longer

by Jerry Bergman, PhD

The article reviewed here identifies several human features as vestigial or poorly designed, including the human spine, neck, backward-facing retina and its blind spot, wisdom teeth, the female pelvis, and the ear pinna. However, each of these claims have been challenged or refuted in the peer-reviewed medical literature.[1] Another article alleging poor design and vestigial organs in the human body appeared this month:

The Human Body Isn’t Perfect – It Was Improvised by Evolution (Lucy E. Hyde, University of Bristol via SciTechDaily, 20 May 2026). Dr Hyde gives examples of poor design and vestigial organs that have been repeatedly debunked, crediting evolution for characteristics she judges to be imperfect.

Rather than responding in detail to each example individually, this article will focus on a broader question: Why have these same vestigial-organ claims been repeated over and over again for many decades?”

One reason is the poor-design claim fits naturally within evolutionary theory. It is presented not only as evidence for evolution, but also as a rebuttal to intelligent design arguments and the theistic worldview. Hyde’s explanation for the importance of vestigial organs is:

The human body evolved through adaptation and compromise, not perfect engineering. Human anatomy is less a story of perfect design and more one of evolutionary adaptation and compromise. Many common medical problems can be traced back to structures that evolved for entirely different purposes millions of years ago. The human body is often described as a marvel of “perfect design”: elegant, efficient, and finely tuned for its purpose. Yet, when we look closer, a rather different picture emerges … Rather than functioning like a flawless machine, the body is better understood as a collection of compromises shaped by millions of years of evolution. Evolution does not build from a blank slate. It adapts and reshapes structures that already exist.”[2]

Another notable feature of the poor-design argument is its frequent use of personifying language as illustrated in the last sentence in the quotation above. Evolution is often described as though it were an intelligent agent capable of goals, choices, and strategies.

In addition to the italicized words in the quotation above, Hyde states, “Evolution does not aim for perfection; it works with what is available, modifying structures step by step.” Such language implicitly attributes purpose and decision-making to a process that is officially described as unguided and impersonal. [3]

The History of the Vestigial Organ Claim

The useless organ view was first promulgated by Charles Darwin in 1859 in his book On the Origin of Species. Darwin dedicated an entire section to what he called “Rudimentary, Atrophied, and Aborted Organs” as evidence for evolution. He argued that these reduced or functionless structures, which today are called vestigial organs, provided “profound evidence for evolution.”[4]

According to this view, such structures are evolutionary leftovers that were fully functional in ancestral organisms, essentially the same argument advanced today by Hyde and others.[5] The word “vestige” comes from the Latin word vestigium, which literally means a “footprint” or “trace.”

In Darwin’s later book, The Descent of Man, he  expanded the list of allegedly useless anatomical features to include the ear muscles, wisdom teeth, the appendix, the coccyx (tailbone), body hair, and the semilunar fold in the corner of the eye. Again, all these examples have been scientifically refuted.[6]

Critics of Darwin’s interpretation argue that subsequent research has demonstrated functional roles for all of these structures. But because Darwin was regarded as the founder of evolutionary theory, and his Origin of Species “is one of the most important books ever published,” his ideas have continued to exert an enormous influence on evolutionists even today.[7]

Wiedersheim’s Shrinking List of Vestigial Organs

The view that vestigial organs provided proof of evolution was further reinforced by the book The Structure of Man by German anatomist Robert Wiedersheim.[8] The Structure of Man was translated into English in 1895.

Wiedersheim was a leading expert in comparative anatomy and published numerous influential textbooks in the field. The vestigial label discouraged efforts to investigate the functions of organs so classified. For nearly a century, the answer to the question “What is the function of this organ?” was often: “It has no function because it is vestigial.” Consequently, for most of the organs labeled vestigial, it took decades—and in some cases nearly a century—to identify their functions, particularly their full range of functions. Frequently, one function of a so-called vestigial organ was eventually discovered, but later research revealed additional roles as well.

For example, the appendix was once thought to be a leftover structure inherited from our ancient herbivorous ancestors who supposedly required a larger cecum to digest fibrous vegetation and cellulose. It is now known to play an important role in maintaining the balance of beneficial and harmful gut bacteria and in supporting the immune system. The history of the appendix demonstrates how premature assumptions about functionlessness can discourage investigation and delay scientific understanding.

Wiedersheim’s list of 86 vestigial organs—often incorrectly reported as 180—is included below. Anatomists have since identified functions for all of these structures, many of them serving important biological roles.

This list illustrates how vestigial organs were once regarded as a major evidence for evolution. So influential was this concept that zoologist Horatio Newman, in a written statement entered into evidence during the Scopes Trial, declared: “There are, according to Wiedersheim, no less than 180 vestigial structures in the human body, sufficient to make a man a veritable walking museum of antiquities.”[9]

Vestigial Organs Frequently Discussed in High School Biology Textbooks

Claims about vestigial organs were for decades frequently discussed in high school biology textbooks, and major reference works, as significant evidence supporting evolution. For example, in 1971, the Encyclopaedia Britannica stated that humans possessed more than 100 vestigial organs. Even as recently as 1981, some biology textbook authors continued to claim that as many as 100 vestigial organs existed in the human body.[10]

As researchers identified functions for organs previously labeled vestigial, the concept increasingly shifted from “functionless evolutionary leftovers” to structures possessing reduced or altered functions compared with their proposed ancestral counterparts. For example, one of the most widely used biology textbooks in America in 1969 defined vestigial structures as “the remnants of organs and structures that were well developed and functional in an organism’s ancestors…”[11]

Summary

The vestigial organ argument is another example of a conclusion long promoted as evidence for evolution that later scientific investigation refuted or substantially undermined. This supports my often-stated conclusion that evolution will ultimately be overturned, not by creationists, but by evolutionists themselves through continued scientific inquiry. Either way, I believe the theory will eventually be buried.

The List of 86 Vestigial Organs From Wiedersheim’s Book

• Os coccygis. Cauda humana.
• Superfluous embryonic notochord and associated somites.
• Embryonic cervical, lumbar, and sacral ribs.
• The thirteenth rib of the adult.
• The seventh cervical rib in the adult.
• The interarticular cartilage of the sterno-clavicular joint (probable vestige of the episternal apparatus).
• Ossa supra-sternalia.
• Certain centres of ossification in the manubrium sterni.
• The branchial clefts (for the most part) and branchial ridges.
• Processus styloideus ossis temporis, and the ligamentum stylohyoideum.
• Anterior cornua of the hyoid, for the greater part.
• Foramen caecum of the tongue.
• Processus gracilis of the malleus.
• Post-frontal bone
• Ossa interparietalia (and preinterparietalia).
• Processus paramastoideus of exoccipital.
• Torus occipitalis.
• Processus frontalis of the temporal.
• Processus coracoideus [meta- and epi-coracoid bones].
• Os centrale carpi.
• Processus supracondyloideus humeri.
• Trochanter tertius femoris.
• The phalanges of the fifth toe, and less conspicuously of the third and fourth toes.
• Muscles of the pinna and the Musculus occipitalis.
• transversus nuchae.
• Facial muscles transformed into tendinous expansions.
• M. plantaris and palmaris longus, when completely tendinous.
• M. ischio femoralis.
• The caudal muscles.
• M. epitrochleo-anconaeus.
• M. latissimo-condyloideus.
• M. transversus thoracis (triangularis sterni).
• M. palmaris brevis.
• The transition bundles between the trapezius and the sterno- cleido-mastoideus.
• M. levator claviculae.
• M. rectus thoracis.
• M. cremaster.
• The primitive hairy covering or lanugo.
• Vestiges of vibrissae
• The vertex coccygeus, the foveola and glabella coccygea.
• Certain vortices of hair on the breast.
• Nipples in men.
• Supernumerary mammary glands in women.
• Alleged vestiges of mammary pouches.
• Supernumerary olfactory ridges.
• Jacobson’s organ, and ductus naso-palatinus.
• Papilla palatina and foliata.
• Plica semilunaris of the eye.
• Vasa hyaloidse (Cloquet’s canal) of the embryo – the choroidal fissure.
• Lachrymal glands, in part.
• The epicanthus.
• M. orbitalis.
• Certain varieties of the pinna of the ear, i.e. Darwin’s tubercle.
• The filum terminale of the spinal cord.
• Glandula pinealis and parietal organ.
• The parieto-occipital fissure of the brain.
• The obex, ponticulus, ligula, taeniae medullares, and velum medullare anterius and posterius, of the brain.
• The hypophysis cerebri (pituitary body).
• The dorsal roots and ganglia of the hypoglossus nerve.
• The rami recurrentes of certain cranial nerves.
• Certain elements of the brachial and lumbo-sacral plexuses.
• The coccygeal nerve.
• The glandula coccygea.
• Palatal ridges.
• The sublingua.
• The formation of rudimentary dental papillae before the sinking of the dental ridge.
• The Wisdom teeth
• The occurrence of a third premolar (reversionary).
• The occurrence of a fourth molar (reversionary).
• The vestiges of a third dentition.
• The ciliated epithelium of the embryonic oesophagus.
• Bursa sub- and prehyoidea (ductus thyroglossus).
• Musculi broncho-oesophagei.
• The appendix vermiformis.
• Ventricle of the larynx (Morgagni’s pouch).
• Lobus subpericardiacus of the lung (reversionary).
• Certain Valves of the veins.
• Certain structures of a vestigial nature in the heart.
• Arteria sacralis media.
• Arteria ischiadica.
• Superficial plantar arterial arch of the foot.
• The vena cava superior sinistra.
• Venae cardinales posteriores, and ductus Cuvieri.
• Vestiges (in the female) of the mesonephric system, and (in the male) of the Müllerian ducts.
• Conus inguinalis, and ligamentum inguinale.
• The area scroti.

References

[1] Bergman, Jerry. Poor Design. An Invalid Argument Against Intelligent Design. Tulsa, Oklahoma: Bartlett Publishing. 230 pages. Revised edition, 2024.

_______ Useless Organs: The Rise and Fall of a Central Claim of Evolution. Tulsa, Oklahoma: Bartlett Publishing. 332 pages. 2 WorldCat libraries. Revised edition, 2024.

[2] Hyde, Lucy. 2026. The Human Body Isn’t Perfect – It Was Improvised by Evolution. https://scitechdaily.com/the-human-body-isnt-perfect-it-was-improvised-by-evolution/#comments. Italics added.

[3] Hyde, Lucy. 2026

[4] Hyde, Lucy. 2026

[5] Hyde, 2026

[6] Bergman 2024.

[7] Darwin Online An Introduction by Gordon Chancellor and John van Wyhe. https://darwin-online.org.uk/EditorialIntroductions/Chancellor_vanWyhe_Origin1st.html

[8] Wiedersheim, R. (1893) The Structure of Man: An Index to His Past History. Second Edition. Translated by H. and M. Bernard. London: Macmillan and Co. 1895.

[9] Darrow, Clarence and William J. Bryan. (1925). The World’s Most Famous Court Trial: The Tennessee Evolution Case Cincinnati, OH National Book Company. p. 268,

[10] Scadding, S. R. 1981. “Do Vestigial Organs Provide Evidence for Evolution?” Evolutionary Theory 5: 173–176.

[11] Otto, James and Albert Towele. 1969. Modern Biology. New York: Holt, Rinehart and Winston, pp. 186-187.

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Dr. Jerry Bergman has taught biology, genetics, chemistry, biochemistry, anthropology, geology, and microbiology for over 40 years at several colleges and universities including Bowling Green State University, Medical College of Ohio where he was a research associate in experimental pathology, and The University of Toledo. He is a graduate of the Medical College of Ohio, Wayne State University in Detroit, the University of Toledo, and Bowling Green State University. He has over 1,900 publications in 14 languages and 40 books and monographs. His books and textbooks that include chapters that he authored are in over 1,800 college libraries in 27 countries. So far over 80,000 copies of the 60 books and monographs that he has authored or co-authored are in print. For more articles by Dr Bergman, see his Author Profile.