part of part of has developmental contribution from has developmental contribution from has potential to develop into has potential to develop into primordium lower jaw region submandibular gland oral epithelium submandibular gland primordium EMAPA:17755 EHDAA:9255 submaxillary gland primordium EHDAA2:0001939 UBERON:0006298 A primordium that has the potential to develop into a submandibular gland. mandibular process mesenchyme salivary gland primordium