parapophysis + rib of vertebra 3 + rib of vertebra 4
parapophysis + rib of vertebra 4
parasymphysial plate +
parietal-supraoccipital
pars articularis of mandibular arch
perichondral bone
pharyngobranchial bone +
posterior ceratohyal
posterior nuchal plate
posterior radial
postsphenoidal bone
postsplenial
prearticular bone +
preethmoid bone
presphenoid bone
procoracoid bone
prootic bone +
pseudoangular +
pseudodentary
pterosphenoid
pterotic
pterotic-posttemporal-supracleithrum
pterygoid bone +
pubis +
quadrate bone +
radial bone +
retroarticular
The retroarticular is a cartilage bone that forms at the posteroventral tip of Meckel's cartilage where the interoperculomandibular ligament attaches (5.1 mm NL). In the adult it is basically triangular in shape. The retroarticular is ligamentously connected to the interopercle and preopercle posteriorly and abuts the ventral shelf of the dentary anteriorly.