participates in develops from OBO_REL:part_of (UNDECLARED) direct ossification Weberian ossicle claustrum cartilage claustrum bone Endochondral bone, membrane bone, and Weberian ossicle that is located dorsal to the scaphium. The claustrum bone is bilaterally paired. TAO:0001592 first Weberian ossicle teleost_anatomy Weberian ossicle set endochondral bone