Early jawless fish were likely to have used bony projections surrounding their mouths to modify their mouth shape while they ...

The most ancient fish were jawless, and since our whole group has jaws, we can safely choose a jawless fish as a fairly recent ancestor. Unfortunately, this ancestor is long dead. To compare ...

The sympathetic nervous system is thought to have evolved in jawed vertebrates and—as jawless vertebrates—lampreys were ...

Jawed vertebrates use V(D)J recombination of immunoglobulin and T cell receptors, whereas jawless vertebrates rearrange variable lymphocyte receptors encoding leucine-rich repeats to form an ...