Helictites are, perhaps, the most delicate of cave formations. They are usually made of needle-form calcite and aragonite. Forms of helictites have been described in several types: ribbon helictites, saws, rods, butterflies, hands, curly-fries, and clumps of worms.. They typically have radial symmetry.
The temporomandibular joint (TMJ) is the joint where the mandible articulates with the cranium (Fig 8.1). The following characteristics make the TMJ a complex and unique joint: 1  It is classified as a compound joint even though it does not include three bone structures in the articulation.
The maxillae (plural: maxillae /maekËsÉªliË/) mÃ¦kËsÉªliË are the two maxilla bones forming the upper jaw and palate of the. Mouth the two halves are fused at the intermaxillary suture to form the upper. Jaw this is similar to the (mandible lower), jaw which is also a fusion of two halves at the mandibular. symphysis