part of part of in taxon Tetrapoda Eumetazoa multi-tissue structure postcranial axial skeleton caudal rod Multi-tissue structure that is a cartilaginous or collagenous bar supporting the caudal appendage. Definition reference: Albert, JS and WL Fink. 2007. PHYLOGENETIC RELATIONSHIPS OF FOSSIL NEOTROPICAL ELECTRIC FISHES (OSTEICHTHYES: GYMNOTIFORMES) FROM THE UPPER MIOCENE OF BOLIVIA . Journal of Vertebrate Paleontology 27(1):17-25 hypural-opisthural rod UBERON:2002129 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