What is Gnathostomata?
Q: What is Gnathostomata?
A: Gnathostomata is the group of vertebrates with jaws.
Q: What was the original intention of the Gnathostomata group?
A: The original intention of the Gnathostomata group was to include all jawed fish.
Q: What does the Gnathostomata group also include in modern fashion?
A: In modern fashion, the Gnathostomata group also includes all the tetrapods as well, since they evolved from jawed fish.
Q: What is the sister group of Gnathostomata?
A: The sister group of Gnathostomata is Agnatha, the jawless vertebrates.
Q: When did the Gnathostomata group first appear?
A: The Gnathostomata group first appeared in the Ordovician period.
Q: When did the Gnathostomata group become diverse?
A: The Gnathostomata group became diverse in the Devonian period, the 'Age of Fishes'.
Q: When did land vertebrates first appear?
A: Land vertebrates first appeared in the Carboniferous period.
