but apparently absent in jawless fish, indicating that these joints first evolved in the ancestors of jawed vertebrates. This study provides critical information for research into the origins of ...

Early jawless fish were likely to have used bony projections ... of Birmingham have used CT scanning techniques to build up ...

but apparently absent in jawless fish, indicating that these joints first evolved in the ancestors of jawed vertebrates. This study provides critical information for research into the origins of ...

and compared them to jawless fish like lampreys. The study also analyzed fossils of extinct species to determine when synovial joints first emerged in the evolutionary timeline. Synovial joints ...

First we need to find the ancestral line they ... we can safely choose a jawless fish as a fairly recent ancestor. Unfortunately, this ancestor is long dead. To compare anything besides bones ...