part of part of develops from develops from cartilaginous condensation head mesenchyme from mesoderm mesenchyme derived from head neural crest basisphenoid pre-cartilage condensation sphenoid cartilage element basisphenoid cartilage condenstion EMAPA:18338 VHOG:0001338 basisphenoid cartilage condensation UBERON:0009194 EHDAA2:0000166 facial mesenchyme