Jawless, bloodsucking fish could help us understand how humans ... published July 26 in the journal Nature Ecology and ...

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 ...

During early evolution of jawed vertebrates, dermal denticles were transferred from the skins of primitive fish to their mouth ... amour plating that clad their jawless forbears some 400 million ...