What did scientists conclude about human biological evolution based on the findings of lucy and other australopithecines?

Scientists concluded that fossils must show evidence of bipedal locomotion instead of just bigger brain sizes to be considered as a hominids.

Explanation:

They further stated that the notion that was previously believed that man became bipedal due to the enlargement of his brain was certainly false. Lucy had small brains, and yet she could stand erect. Furthermore, it was concluded that man would have split from his ancestors (ape) as far back as 15 million years ago because Lucy was very primitive.

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explanation:

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