Annelida
- Clitellata
- Aulozoon
- Lepidocoleidae
- Plumulitidae
- Polychaeta
- Common earthworm Lumbricus terrestris
Photo: David Perez · CC BY 3.0 An earthworm that makes deep burrows, feeding on leaf litter at the surface and sometimes pulling it underground. It connects life above and below the soil.