Which is not a fibrous joint:
First costochondral joint is a hyaline cailage joint (synchondrosis or syscendrosis), which is a type of primary cailagenous joint. Sutures of skull, Inferior tibifibular joint (syndesmosis), denotalveolar joint (gomphosis) are examples of fibrous joint.
Gomphoses
Cranial sutures
First costochondral joint
Inferior tibiofibular joint
First costochondral joint