Homo ergaster cranium (KNM - ER 3733)
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Homo ergaster cranium (KNM - ER 3733)
Homo ergaster cranium from Koobi Fora, Area 104, Kenya. Cast of KNM - ER 3733. side view. Scale in cms. This specimen discovered in 1975 by Bernard Ngeneo dates back to 1.6 million years ago
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Media ID 8617741
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Bone Cranium Epitheria Eutheria Fossil Fossilised Great Ape Haplorhini Hominid Hominidae Hominini Hominoid Hominoidea Homo Homo Ergaster Kenya Koobi Fora Mammalia Placental Mammal Primate Primates
EDITORS COMMENTS
1.6 million years ago in the arid savannas of Koobi Fora, Kenya, a significant discovery was made that would forever change our understanding of human evolution. In 1975, Bernard Ngeneo unearthed a well-preserved cranium, now known as KNM-ER 3733, belonging to a Homo ergaster, an early hominid and a member of the Homo lineage. This fossilized skull, displayed here in a side view, provides valuable insights into the anatomy and evolutionary history of our ancestors. Homo ergaster, meaning "working man," is a transitional species between Australopithecus and Homo heidelbergensis. With a cranial capacity of approximately 880 cubic centimeters, KNM-ER 3733 exhibits several features that distinguish it from its predecessors. The brow ridges are less pronounced, the face is more projecting, and the cranial vault is more rounded. These adaptations suggest that Homo ergaster was likely more adept at using tools and had a more complex social structure. As a primate, Homo ergaster shares several characteristics with modern primates, including a flexible spine, opposable thumbs, and a large brain relative to body size. The fossilized cranium, with its intricate details and preserved bone structure, offers a glimpse into the anatomical features that make Homo ergaster a crucial link in the evolutionary tree of primates and mammals. This cast of KNM-ER 3733, displayed here with a scale in centimeters, is a testament to the rich fossil record in Africa and the ongoing discoveries that continue to shape our understanding of human evolution. The fossilized remains of Homo ergaster serve as a reminder of our shared ancestry with other primates and mammals and the complex journey of life on Earth.
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