Recent discoveries of hominin fossils in the Thomas Quarry I cave located in Casablanca, Morocco, provide crucial insights into the early origins of homo sapiens. These findings indicate that the lineage leading to modern humans was potentially established in Africa nearly 800,000 years ago. The fossils, although similar in age to the ancestor of homo discovered in Spain, display a mix of primitive and advanced traits reminiscent of post-Eurasian hominins, including homo sapiens.

Paleoanthropologists have long debated the origins of Neanderthals and Denisovans, the last common ancestors of modern humans. Genetic studies reveal that this ancestor likely existed between approximately 765,000 and 550,000 years ago, although fossil records are still inconclusive.

While some researchers have posited a Eurasian origin based on fossils unearthed in Atapuerca, Spain, dating back to 950,000 to 770,000 years ago, the new findings from Morocco reinforce the theory of an African origin.

Recent discoveries from the Moroccan cave, including mandible fragments, teeth, vertebrae, and femur pieces, bolster the evidence supporting Africa as the cradle of human evolution.

Analysis of the sediments surrounding these fossils indicates that they date back approximately 773,000 years, coinciding with significant changes in the Earth’s magnetic field, aligning with the era of the ancestor of homo.

Interestingly, the new fossils present distinct morphological differences. The evidence suggests that regional differentiation between Europe and North Africa was already evident by the late Early Pleistocene, spanning from around 1.8 million to 780,000 years ago.

The Moroccan fossils exhibit a blend of primitive features linked to species like homo erectus alongside more modern traits found in homo sapiens and Neanderthals.

For instance, their molar size aligns with earlier homo sapiens fossils, while the jaw shape resembles that of Neanderthals and other African archaic humans.

Although the Moroccan fossil may not serve as the ultimate last common ancestor of modern humans, Neanderthals, and Denisovans, it is likely a close precursor.

“The Moroccan fossils likely represent an advanced form of homo erectus in North Africa, situated on a lineage close to the evolutionary divergence between African and Eurasian lineages,” stated the researchers.

“Our findings underscore the Maghreb region as vital for understanding the emergence of our species and strengthen the argument for an African origin of homo sapiens,” they concluded.

Findings are detailed in a recent study published in Nature.

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J.J. Havlin and colleagues. Early human fossils from Morocco and the emergence of homo sapiens. Nature, published online January 7, 2026. doi: 10.1038/s41586-025-09914-y