The genus Ardipithecus has defied expectations about early hominins because:

The genus Ardipithecus has defied expectations about early hominins because it represents a more primitive and divergent form of hominin than previously thought.

The genus Ardipithecus has defied expectations about early hominins because it represents a more primitive and divergent form of hominin than previously thought. Ardipithecus lived over 4 million years ago, during a time when it was believed that hominins were more closely related to chimpanzees and had a chimpanzee-like mode of locomotion.

However, Ardipithecus has been shown to have a more upright posture and bipedal gait than expected, as well as a unique combination of ape-like and human-like traits in its skull and teeth. These findings have challenged long-held assumptions about the evolution of early hominins and shed new light on the diversity and complexity of our evolutionary history.

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