A new fossil is found, and scientists are debating whether it can be considered a part of the human genus Homo

Question

A new fossil is found, and scientists are debating whether it can be considered a part of the human genus Homo. What piece of evidence would best indicate that the fossil is human?
large jaw bone for muscle attachment
pelvic blades rotated inward
very long arms
thick rib cage

GPT-5 mini · Answer

Pelvic blades rotated inward.

Reason: inward-rotated, short and broad ilia are a key adaptation for upright bipedal walking (they re-position hip muscles to stabilize the pelvis during single-leg stance). Large jaw muscle attachments, very long arms, or a thick rib cage point to heavy chewing or arboreal/ape-like anatomy, not typical Homo.

A new fossil is found, and scientists are debating whether it can be considered a part of the human genus Homo. What piece of evidence would best indicate that the fossil is human?
large jaw bone for muscle attachment
pelvic blades rotated inward
very long arms
thick rib cage

All Answers 1

Submit Your Answer

A new fossil is found, and scientists are debating whether it can be considered a part of the human genus Homo. What piece of evidence would best indicate that the fossil is human? large jaw bone for muscle attachment pelvic blades rotated inward very long arms thick rib cage

All Answers 1

Submit Your Answer

A new fossil is found, and scientists are debating whether it can be considered a part of the human genus Homo. What piece of evidence would best indicate that the fossil is human?
large jaw bone for muscle attachment
pelvic blades rotated inward
very long arms
thick rib cage