| 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: | neural tube |
|---|---|
| Synonyms: | presumptive central nervous system |
| Definition: | Portion of tissue that is the cavity-containing primordium of the central nervous system, developing from the neural rod in the late segmentation period. |
| Ontology: | Anatomy Ontology [ZFA:0001135] |