Some articles on intermaxillary:

Intermaxillary Segment
... In a human embryo, the intermaxillary segment is a mass of tissue which forms from the merging of some of the tissues in the vicinity of the nose ... embryo, this particular mass no longer appears, but parts of it remain in "the intermaxillary portion of the upper jaw, the prolabial portion of the upper lip, and the primary palate" ... It is also known as the intermaxillary segment ...