| Name: | caudal fin |
|---|---|
| Synonyms: | tail, tail fin |
| Definition: | Fin that is the most posterior median fin. It is composed of a complex of three modified centra and modified neural and hemal arches and spines. |
| Ontology: | Anatomy Ontology [ZFA:0001058] |
| Name: | absence of anatomical entity |
|---|---|
| Synonyms: | anatomical entity absence |
| Definition: | A quality denoting the lack of an anatomical entity or cellular component. |
| Ontology: | Phenotypic Quality Ontology [PATO:0040060] |