The gang discusses two papers from a new locality of early fishes that give a lot of new insights into fish evolution. Meanwhile, Curt loves new Discord features, James shares some fun stories, and Amanda know how best/worst to keep everyone on track.

Up-Goer Five (Curt Edition):

Our friends look at two papers from a group of papers that just came out about a place where you can get really good parts from very very old things that live in the water and have hard parts on the inside and would be great great great great mom and dad to a lot of things that have hard parts inside and live on land. One paper looks at these animals that do not have a hard part in the place where they eat and looks at how they have really cool ways to move through water that gives us ideas about how these things that help move through water have changed over time. The other paper looks at a lot of different types of these animals that live in water and shows that they were doing a lot of different things very early on.

References:

Zhu, You-an, et al. "The oldest complete jawed vertebrates from the early Silurian of China." Nature 609.7929 (2022): 954-958.

Gai, Zhikun, et al. "Galeaspid anatomy and the origin of vertebrate paired appendages." Nature 609.7929 (2022): 959-963.