Humans Got Their Flexible and Sturdy Joints From Fishes, Evidence Found in 400 Million-Year-Old Jawed Fish Evolution has ...

Jef Akst was managing editor of The Scientist, where she started as an intern in 2009 after receiving a master’s degree from Indiana University in April 2009 studying the mating behavior of seahorses.

In this study, Sharma and colleagues examined the anatomy and development of joints in members of two early-branching vertebrate lineages: one species of jawless fish, sea lampreys, and two ...

The types of joints we (and most vertebrates ... Synovial joints are known to be present in jawed but not jawless fish. This left the question of whether they are just a feature of bony skeletons ...

The most ancient fish were jawless, and since our whole group has ... Organisms have only two types of traits: primitive and derived. Primitive traits are those inherited from distant ancestors.