axial skeleton morphology trait thoracic cage morphology trait Trait.ontology Any measurable or observable characteristic related to the shape, structure, color, or pattern of the bony and cartilaginous structure enclosing the thoracic cavity, consisting of the thoracic vertebrae, ribs, costal cartilages, and sternum. 2010-03-16T09:27:29Z caripark VT:0010092