Nonhoning chewing complex is a derived trait of Sahelanthropus tchandensis which identifies it as a hominin.
What is a Nonhoning complex?
This edge is kept sharp because the upper canine rubs against, or hones, the sharp edge of the lower third premolar every time the jaws close. This is due to the diastema present on the jaws, which allows the jaws to close completely.
Do humans have non-honing chewing?
All hominins have a non-honing chewing complex for smashing food. Where the chewing muscles connect to the top of the skull.
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Full Question :Which of the following is a derived hominin trait first seen in Sahelanthropus tchandensis?
A. Length of the calcaneus
B. Nonhoning chewing complex
C. Larger body size
D. Big toe opposability
