A new study published in Nature describes the discovery of 13 fossilized teeth from the Ledi-Geraru site in Ethiopia. They have been dated to between 2.6 and 2.8 million years ago and are attributed to two distinct hominin species: early Homo and a newly identified Australopithecus relative.¹ The researchers argue that this find supports a “bushy tree” model of human evolution, where multiple species lived side by side rather than evolving from one to another in a straight line. While this may sound like progress to evolutionary scientists, it actually raises more questions than answers.

First, the dating methods used to assign ages to these fossils rely on radiometric techniques that assume constant decay rates and closed systems. These assumptions are rarely met in nature, and contamination or unknown starting conditions can skew results dramatically. Creation scientists have long pointed out that radiometric dating relies such unverifiable assumptions. For example, volcanic rocks from Mt. Ngauruhoe in New Zealand, known to have erupted in 1949, 1954, and 1975, were dated using potassium-argon methods, and they yielded ages ranging from 270,000 to 3.5 million years. These inflated results were likely due to inherited argon, which violates the assumption of a closed system and highlights the method’s vulnerability to contamination.²

Second, the presence of two hominin species in the same location and timeframe doesn’t confirm evolution—it complicates it. If Australopithecus and early Homo lived together, then the idea that one evolved into the other becomes less convincing. Evolutionists frequently revise their “family tree” with each new fossil discovery, which shows how unstable and speculative the model really is. As one of the study’s authors admitted, “Human evolution is not linear.”³ But if the evidence doesn’t support a clear evolutionary path, why should we trust the theory at all?

From a biblical creation perspective, these fossils likely represent either extinct varieties of humans or apes—not transitional forms. Teeth alone are insufficient to determine species, intelligence, or behavior. Many fossil finds have been misclassified based on fragmentary evidence. For example, Australopithecus afarensis (like the famous “Lucy”) was once hailed as a human ancestor, but later studies showed it had ape-like features and likely walked on all fours.⁴ Creationists maintain that humans were created fully human and apes were created fully ape—each according to their kind, as Genesis teaches.

Another flaw in the evolutionary argument is the assumption that physical similarities prove common ancestry. Just because two species share traits doesn’t mean they evolved from a common ancestor. Engineers reuse successful designs, and the Creator did, too. Similar teeth or bones may reflect similar functions rather than evolutionary relationships. This idea, called common design, better explains the patterns we see in nature without relying on random mutations and millions of years.⁵

In the end, discoveries like the Ethiopian teeth don’t confirm evolution—they expose its weaknesses. The fossil record is full of gaps, contradictions, and reinterpretations. But the Bible offers a consistent and trustworthy account of human origins. We were created in God’s image, not shaped by random processes. As more fossils are found, we expect the evolutionary story to keep changing. But God’s Word never does.

References

1. Villmoare, B. et al. New Discoveries of Australopithecus and Homo from Ledi-Geraru, Ethiopia. Nature. Posted to nature.com August 13, 2025.
2. Snelling, A A. Radiometric Dating: Problems with the Assumptions. Answers Magazine. Posted to answersingenesis.org October 1, 2009.
3. Arizona State University. Ancient Fossil Discovery in Ethiopia Rewrites Human Origins. ScienceDaily. Posted to sceincedaily.com August 21, 2025.
4. Lubenow, Marvin L. 2004. Bones of Contention: A Creationist Assessment of Human Fossils. Grand Rapids: Baker Books, 248–263.
5. Guliuzza, R. 2010. Similar Features Demonstrate Common Design. Acts & Facts. 39 (11): 10–11.

Stage image: Cranium of Australopithecus sediba (MH1), a juvenile extinct ape. Though often promoted as a transitional form in human evolution, creationists interpret this fossil as a variation within the ape kind—fully ape, not part human.
Stage image credit: Brett Eloff, GNU Free Documentation License, CCA 4.0, 3.0, 2.5, 2.0, and 1.0, via Wikimedia Commons. Used in accordance with federal copyright (fair use doctrine) law. Usage by ICR does not imply endorsement of copyright holder.

* Dr. Corrado earned a Ph.D. in Systems Engineering from Colorado State University and a Th.M. from Liberty University. He is a freelance contributor to ICR’s Creation Science Update, works in the nuclear industry, and is a Captain in the U.S. Naval Reserve.