From the Editors

Gallery | October 2017 homepage image 2

Enlargment of the brain and consequent expansion of the frontal and reduction of the parietal along the bird branch. The taxa represented are the archosauriformes Proterosuchus, the early dinosaur Herrerasaurus, the paravian Zanabazar and the extant bird Gallus. Image by Matteo Fabbri.

Fabbri, M., et al. The skull roof tracks the brain during the evolution and development of reptiles including birds. Nat. Ecol. Evol. 1, 1543-1550 (2017).