All of the following are examples of fibrous joints except: a. tooth within the maxilla
b. skull with the atlas
c. radius with the ulna
d. frontal bone with the parietal bones

a. tooth within the maxilla

Explanation:

Fibrous joints are the type of joints that is connected by fibrous tissue, consist  mainly of collagen. These joints are fixed joints where bones are united by a layer of white fibrous tissue having different thickness. Fibrous joints are present in the neck, in the wrist, knee, hip and at the foot of our body where two bones connect. It does not occur in tooth within the maxilla of human body.

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