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Monotreme ears and the evolution of mammal jaws

Posted by on August 5th, 2020

Jaw joints, in most vertebrate animals that have them, form between a bone in the head called the quadrate and one in the mandible called the articular. The mandibles (lower jaw bone) of most vertebrates is compound, made up of fused bones, but we mammals are different. ¬†We have lots of different types of teeth[…]