part of part of overlaps overlaps skeleton of jaw skeleton lower jaw region skeleton of lower jaw A subdivision of the skeleton that corresponds to the lower part of the mouth. The lower jaw skeleton includes the following elements, when present: lower jaw teeth, the mandible and other lower jaw bones, and Meckel's cartilage. AAO:0000274 mandibular series EHDAA2:0004606 mandibles UBERON:0003278 lower jaw The ventral portion of the first pharyngeal arch, comprising the lower jaw.[TAO] mandible VHOG:0000428 The jaw joint of all jawed vertebrates, except for mammals, involves the quadrate and articular bones, or the posterior ends of the palatoquadrate and mandibular cartilages; A correlate of the conversion of the articular and quadrate bones to the malleus and incus is that all adult mammals have a jaw joint that lies between the dentary of the lower jaw and the squamosal bone of the skull roof.[well established][VHOG] MA:0001906 XAO:0003084 EHDAA:8005 lower jaw skeleton ZFA:0001273 FMA:54398 TAO:0001273 EMAPA:17910 Inclusion of the FMA class 'lower jaw' is debatable - this mostly corresponds to the lower jaw skeleton (with 'maxillary part of mouth' corresponding to the upper jaw region); however, the FMA class also includes gingiva. See also: https://github.com/obophenotype/mouse-anatomy-ontology/issues/102 splanchnocranium subdivision of skeleton