part of part of premaxilla bony projection alary process of premaxilla pars frontalis of premaxilla pars prenasalis of premaxilla This class was sourced from an external ontology (amphibian_anatomy). Its definitions, naming conventions and relationships may need to be checked for compatibility with uberon dorsal process of premaxilla premaxillary spine pars facialis of premaxilla processus frontalis of premaxilla UBERON:3000003 Dorsal process that extends toward the nasal bone. The posterior (inner) face of each alary process is concave and is invested dorsomedially by the superior prenasal cartilage and ventromedially by the inferior prenasal cartilage. processus nasalis of premaxilla pars dorsalis of premaxilla processus ascendens of premaxilla