part of part of organ part epicoracoid epicoracoid horn UBERON:3000777 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 A pair of cartilaginous expansions (one from each epicoracoid cartilage) that project posteriorly. They articulate with the sternum by means of grooves, pouches or fossae in the dorsal surface of the sternum and provide a site for the insertion of a pair of muscles derived from the m. rectus abdominis.