| Name: | preural vertebra |
|---|---|
| Synonyms: | caudal fin vertebra, specialized centra/vertebrae |
| Definition: | Vertebra which are the three most posterior vertebra supporting the caudal fin. |
| Ontology: | Anatomy Ontology [ZFA:0000734] |
| Name: | hemal arch |
|---|---|
| Synonyms: | haemal arch, ventral arcocentrum |
| Definition: | Hemal arches extend ventrally from the centra of caudal and transitional vertebrae to enclose the caudal artery and vein. In cyprinids, the hemal arch forms directly in membrane bone. |
| Ontology: | Anatomy Ontology [ZFA:0000519] |