Question

write a short note on Gnathostomata ​

Answer 1

Answer:

Gnathostomata is the group of vertebrates with jaws. The group was meant to include all jawed fish, but in modern fashion it also includes all the tetrapods as well, since they evolved from jawed fish. It is the sister group of the Agnatha, the jawless vertebrates.

Answer 2

Answer:

Gnathostomata /ˌneɪθoʊstoʊˈmɑːtə/ are the jawed vertebrates. ... It is now assumed that Gnathostomata evolved from ancestors that already possessed a pair of both pectoral and pelvic fins. These ancestors, known as antiarchs, were previously thought to not possess pectoral or pelvic fins until recently.