Term: cleithrum anatomical region
Name: cleithrum
Synonyms: cleithra
Definition: Transversely oriented bone connecting the occipital region of the skull dorsally and pectoral girdle ventrally; appears near the end of embryogenesis.
Ontology: Anatomy Ontology [ZFA:0000184]

Name: anatomical region
Synonyms:
Definition: A 3D region in space without well-defined compartmental boundaries; for example, the dorsal region of an ectoderm.
Ontology: Spatial Ontology [BSPO:0000070]