Biology · Evolution and Paleontology
Recent paleobiological research on large extinct sthenurine kangaroos attributes their unique locomotor constraints and weight-bearing adaptations primarily to which of the following anatomical modifications?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Development of highly flexible hyper-rotational ankle joints allowing rapid multi-directional propulsion.
- 2Significantly reduced overall body mass owing to lower skeletal density.
- 3Specialized modifications of the foot and heel bones (calcaneus) enabling resistance to high landing forces during bipedal striding.✓
- 4Presence of elongated hindlimbs comparable to modern high-speed cursorial quadrupeds.
Correct answer
Specialized modifications of the foot and heel bones (calcaneus) enabling resistance to high landing forces during bipedal striding.
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