Gnathostomata
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Gnathostomata Fossil range: Late Ordovician - Recent |
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Gnathostomata are jawed vertebrates
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Scientific classification | ||||||||
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Gnathostomata is the group of vertebrates with jaws.
The group is traditionally a superclass, incluiding the familiar classes of fish, birds, mammals, and so forth, and a sister group of the jawless vertebrates Agnatha. However, recent genetic studies are causing a reassessment of Gnathostomata as a grouping.
The Gnathostomata first appeared in the Ordovician period and became common in the Devonian period.
[change] Subgroups
- Class Placodermi†
- Superclass Chondrichthyes
- Microphylum Teleostomi
- Class Acanthodii†
- Class Actinopterygii
- Parvophylum Tetrapodiiformes
- Class Sarcopterygii
- Nanophylum Tetrapoda