Hierarchy classification:

1. top of the aat hierarchies
2. Agents Facet
3. Living Organisms (hierarchy name)
4. living organisms (entities)
5. Eukaryota (domain)
6. Animalia (kingdom)
7. Cnidaria (phylum)
8. Anthozoa (class)

Narrower term/s

• Alcyonacea (order)[+]
  • Coralliidae (family) [+]
    • Corallium (genus) [+]
      • Corallium rubrum (species)

Anotations

Scope note:

Subclass comprising three orders, Alcyonacea, Helioporacea, and Pennatulacea, of water-based organisims with around 3,000 species. Polyps have 8 pinnately branched tentacles, 8 mesenteries, and a single siphonoglyph. Nearly all colonial with internal skeletons.