| 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] |