part of part of skull bone fossa spheno-maxillary fossa NCIT:C33584 UBERON:0013454 Wikipedia:Spheno-maxillary_fossa The speno-maxillary fossa is a small triangular space situated at the angle of the junction of the spheno-maxillary and pterygo-maxillary fissures, and placed beneath the apex of the orbit. It is formed above by the under surface of the body of the sphenoid and by the orbital process of the palate bone. UMLS:C1519450