Term: cleithrum intramembranous ossification
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: intramembranous ossification
Synonyms: dermal ossification, intramembranous bone ossification
Definition: Direct ossification that occurs within mesenchyme or an accumulation of relatively unspecialized cells.
Ontology: GO: Biological Process [GO:0001957]    QuickGO    AmiGO