OBO_REL:part_of (UNDECLARED) dermatocranium median premaxilla Dermal bone that is located in the middle of the upper jaw, independently formed by fusion of tooth bases attached to soft tissue in the middle portion of the upper lip. The median premaxilla bears teeth in adults. Recorded in trichomycterid subfamilies Stegophilinae and Vandelliinae (Baskin, 1973). submitted by Mario de Pinna. TAO:0001692 teleost_anatomy dermal bone