temporal bone morphology trait subarcuate fossa morphology trait Trait.ontology VT:0015076 smb floccular fossa morphology trait 2010-02-22T04:14:26Z Any measurable or observable characteristic related to the shape, structure, color or pattern of the irregular depression found on the posterior inner surface of the petrous portion of the temporal bone just below its crest and above and lateral to the internal acoustic meatus.