part of part of pharyngeal arch 6 skeleton pharyngobranchial element pharyngobranchial 4 element Most posterior pharyngobranchial element, located medial to the epibranchials. infrapharyngobranchial 4 element UBERON:2001913 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 infrapharyngobranchial 4 element