Agnatha (Lampreys, Hagfishes, Ostracoderms)
Published Online: 19 APR 2001
Copyright © 2001 John Wiley & Sons, Ltd. All rights reserved.
How to Cite
Janvier, P. 2001. Agnatha (Lampreys, Hagfishes, Ostracoderms). eLS.
- Published Online: 19 APR 2001
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).