@WFS,World Fossil Society,Riffin T Sajeev,Russel T Sajeev Oldest skeleton of a plesiadapiform provides additional evidence for an exclusively arboreal radiation of stem primates in the Palaeocene Stephen G. B. Chester, Thomas E. Williamson, Jonathan I. Bloch, Mary T. Silcox, Eric J. Sargis Palaechthonid plesiadapiforms from the Palaeocene of western North America have long been recognized as among the oldest […]