​

---

NEWS: Please see our video offerings on evolution done with Stefano Dominici on my YouTube channel: https://www.youtube.com/channel/UCVhxXIQKWH6OBrre7_lmHCw
Please subscribe and click the Youtube bell next to the subscribe button to be notified of uploads.

And also check out the new blog I am doing with Bruce Lieberman: https://bronze-sheep-29mh.squarespace.com 


Also, check out the Burned Over District website (nileseldredgecom.weebly.com), established with my late colleague Harold B. Rollins. 

Phacops rana. Moscow Formation (Middle Devonian), Lebanon, New York. This trilobite species-lineage served as the original example of "punctuated equilibria." Photo (in the field, May 2015) by Art Murphy.