Grotte à Hominidés

Fossilized bones and teeth dating back around 773,000 years have been unearthed from a cave in Casablanca, Morocco, offering crucial new insights into the early evolution of Homo sapiens in Africa. Researchers say the remains likely belonged to archaic humans closely related to the direct ancestors of modern humans.

Site of Discovery: Grotte à Hominidés
The fossils were found in a cave known as Grotte à Hominidés, which appears to have functioned as a predator den. Evidence includes bite marks on a thigh bone, suggesting the individual may have been hunted or scavenged by a hyena.

Nature of the Fossils
The discoveries include:

• Lower jawbones of two adults and one toddler
• Teeth
• A thigh bone
• Several vertebrae

Together, these remains represent one of the most complete archaic human assemblages from this period in Africa.

Link to Homo erectus
Researchers interpret the fossils as belonging to an evolved form of Homo erectus, a species that first appeared in Africa about 1.9 million years ago and later spread to Eurasia.

• The bones show a blend of primitive and more modern human traits
• This suggests a transitional population in human evolution

Filling a Critical Fossil Gap
The fossils help bridge a major gap in the African hominin fossil record between 1 million and 600,000 years ago—a poorly understood period in human evolution.

Position in the Human Family Tree
According to researchers, this population may have lived just before the evolutionary split that led to:

• Homo sapiens in Africa
• Neanderthals and Denisovans in Eurasia

Scientific Dating Method
The age of the fossils was determined using the magnetic signature of cave sediments, a technique that allowed scientists to accurately place the remains in the evolutionary timeline.

Global Context and Comparisons

• The fossils are roughly the same age as Homo antecessor remains found at Gran Dolina near Atapuerca, Spain
• Several anatomical traits are shared between the Moroccan and Spanish fossils, suggesting wider connections among early human populations

Morocco’s Importance in Human Evolution
Morocco has emerged as a key region in human origins research. The oldest known Homo sapiens fossils, dated to about 315,000 years ago, were also found in the country at Jebel Irhoud, reinforcing North Africa’s central role in the story of modern human evolution.