part of part of dermatocranium skeleton of upper jaw dermal bone bone of upper jaw median premaxilla UBERON:2001692 Recorded in trichomycterid subfamilies Stegophilinae and Vandelliinae (Baskin, 1973). submitted by Mario de Pinna. This class was sourced from an external ontology (teleost_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon 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.