What skeletal feature generally distinguishes apes from monkeys like tamarins?

Answer

Broader chests

Beyond the tail difference, skeletal structure provides crucial anatomical separation between apes and monkeys. Apes generally possess broader chests and exhibit more flexible shoulder joints compared to monkeys of similar body size. These features are adaptations necessary for their primary modes of travel, such as brachiation. Tamarins, conversely, exhibit the classic monkey morphology, specialized for clinging and leaping, which requires a different underlying skeletal configuration.

What skeletal feature generally distinguishes apes from monkeys like tamarins?
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