inner ear morphology trait bony labyrinth morphology trait Trait.ontology osseous labyrinth morphology trait Any measurable or observable characteristic related to the shape, structure, color or pattern of the series of cavities (cochlea, vestibule, and semicircular canals) contained within the otic capsule of the petrous portion of the temporal bone; the bony labyrinth is filled with perilymph, in which the delicate, endolymph-filled membranous labyrinth is suspended. VT:0004289 labyrinthus osseus morphology trait