placental mammals
The Placental mammal saga; special summer double episode
18/10/2013
As I wrote in a previous post last winter, O’Leary et al. added their oar into the Placental Mammal origins debate. For anyone who missed that episode, they argued, with the backing of masses of morphological data, that placental mammal orders appeared right after the extinction of non-avian dinosaurs (also known as the explosive model). […]
Palaeo-poetry and placental mammals
18/02/2013
Recently Science published O’Leary et al.’s - new load of oil to fuel the burning debate on the origins of placental mammals. Just to be clear: there is an important distinction between mammals in general that includes many fossils from the Jurassic as well as the extant platypus, kangaroo and your grandma; and placental mammals […]