Annelida

A phylum of metazoan invertebrates comprising the segmented worms, and including marine annelids (POLYCHAETA), freshwater annelids, earthworms (OLIGOCHAETA), and LEECHES. Only the leeches are of medical interest. (Dorland, 27th ed)

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Tree Number(s): B01.050.500.091

MeSH Unique ID: D000845

Registry Number: txid6340

Entry Terms:

• Annelidas
• Segmented Worms
• Segmented Worm
• Worm, Segmented
• Worms, Segmented

All MeSH Categories
Organisms Category
Eukaryota
Animals
Invertebrates
Annelida
Leeches
Hirudo medicinalis
Oligochaeta
Polychaeta