Examples of hagfish in the following topics:
-
Agnathans: Jawless Fishes
- Hagfishes and lampreys are recognized as separate clades, primarily because lampreys are true vertebrates, whereas hagfishes are not.
- The clade Myxini includes at least 20 species of hagfishes.
- This notochord provides support to the hagfish's body.
- Lampreys are morphologically similar to hagfishes and also lack paired appendages.
- Pacific hagfish are scavengers that live on the ocean floor.
-
The Evolution of Craniata and Vertebrata
- The clade Craniata includes all vertebrates and the hagfishes (Myxini), which have a cranium but lack a backbone.
- Hagfish are the only known living animals that have a skull, but not a vertebral column .
- Although it lacks a backbone, the hagfish is a member of the Craniata clade because it possesses a bony skull.