| 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: | lepidotrichium |
|---|---|
| Synonyms: | fin ray, lepidotrichia |
| Definition: | Dermal bone that is rod-like, formed and usually contained in a fin membrane, and jointed to or adjacent to distal radials. They are bilaterally paired. Lepidotrichia are formed from paired hemitrichia surrounding actinotrichia. There are usually two more lepidotrichia than distal radials. |
| Ontology: | Anatomy Ontology [ZFA:0001554] |