fenestra nasobasalis 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 foramen apicale foramen epiphaniale fenestra basalis nasi UBERON:3000166 basal fenestra nasobasal fenestra Small opening at the anterior tip of the nasal capsule, on the floor of the cavum inferius. It is located medially to the base of the inferior prenasal cartilage and serves for the passage of the ramus medialis narium and arteria orbitonasalis. nasal opening