relationship loss: overlaps inter-premaxillary joint (TAO:0001950)[TAO], relationship loss: overlaps premaxillary-maxillary joint (TAO:0002260)[TAO], relationship loss: overlaps mesethmoid-premaxillary joint (TAO:0001676)[TAO]

http://upload.wikimedia.org/wikipedia/commons/4/4a/Gray160.png

requires checking embryonic vs adult; isa fetal organ part in FMA; adult bone of upper jaw in AAO and ZFA; split. Note that we have loops if we add develops_from UBERON:0005620 primary palate

One of the bones of the upper jaw situated between and in front of the maxillae. [Dorian_AF, Elsevier's_encyclopaedic_dictionary_of_medicine, Part_B:_Anatomy_(1988)_Amsterdam_etc.:_Elsevier][VHOG], Paired, intramembranous bones located at the anterior end of the skull; they form the anterior-most segment of the maxillary arch.[AAO], Dermal bone that forms the anteriormost element of the upper jaw. It articulates with the maxilla posterodorsally and its antimere medially. The premaxilla is paired.[TAO]

UBERON:0002253

uberon

incisive bone, premaxillary bone, os incisivum, premaxilla bone

(...) in all higher vertebrates a premaxilla is present (...) (reference 1); Although the presence of a tooth-bearing outer buccal arcade (premaxilla, maxilla, dentary) is cited as a common character of Osteichthyes, dipnoans lack all three bones (...) (reference 2).[well established][VHOG]

UBERON:0002244

• inter-premaxillary joint

• premaxillary tooth

• maxilla

• primary palate
• alveolar ridge of premaxilla