| 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: | anatomical margin |
|---|---|
| Synonyms: | edge, margin |
| Definition: | Fiat anatomical region extending a short distance from the boundary of an object inwards. |
| Ontology: | Spatial Ontology [BSPO:0000006] |