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Agnatha (Lampreys, Hagfishes, Ostracoderms)

  1. Philippe Janvier

Published Online: 19 APR 2001

DOI: 10.1038/npg.els.0001532

Book Title

eLS

eLS

Additional Information

How to Cite

Janvier, P. 2001. Agnatha (Lampreys, Hagfishes, Ostracoderms). eLS. .

Author Information

  1. Muséum National d'Histoire Naturelle, Paris, France

Publication History

  1. Published Online: 19 APR 2001
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Abstract

Agnathans are an ensemble of jawless (non-gnathostome) vertebrates, some of which are more closely related to the gnathostomes than others. Living agnathans fall into two groups, hagfishes (Hyperotreta) and lampreys (Hyperoartia), united into a higher group, the cyclostomes (Cyclostomi).

Keywords:

  • hyperotreta;
  • hyperoartia;
  • cyclostomes;
  • vertebrates;
  • gnathostomes
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