Page last updated Wed 05 Feb 2020


Use the links to navigate the hierarchy of invertebrate classification.

  Superphylum Lophotrochozoa

Phylum Annelida (segmented worms)

    Class Clitellata -- Wisconsin!
    grade "Polychaeta" -- midwestern North America.
    Class Aphanoneura -- midwestern North America.
    Class Echiura
    Class Sipuncula

Taxon Information

The Phylum Annelida has been reported (or is assumed) to occur in fresh waters. This taxon has been reported from Wisconsin.

(These statements were generated automatically from the WInvertebrates database.)

Literature Records

  • Annelida, "17,210 species" (Zhang, 2011).
  • Annelida, [16,500 described species] (Brusca & Brusca, 2003).


  • Zhang, Z.-Q. 2011. Animal biodiversity: An introduction to higher-level classification and taxonomic richness. Zootaxa 3148: 7-12. [Available online]
  • Brusca, R.C. & G.J. Brusca. 2003. Invertebrates, 2nd edition. Sinauer Associates, Inc., Sunderland, Massachusetts. 936 pp.
  • Smith, D.G. 2001. Annelida (Polychaetes, Aeolosomatidae, aquatic oligochaetes, Branchiobdellida, leeches). Pennak's Freshwater Invertebrates of the United States, 4th edition: 269-325.

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