Université de Fribourg

On trends and patterns in macroevolution: Williston’s law and the branchiostegal series of extant and extinct osteichthyans

Ascarrunz, Eduardo ; Sánchez-Villagra, Marcelo R. ; Betancur, Ricardo ; Laurin, Michel

In: BMC Evolutionary Biology, 2019, vol. 19, no. 1, p. 117

The branchiostegal series consists of an alignment of bony elements in the posterior portion of the skull of osteichthyan vertebrates. We trace the evolution of the number of elements in a comprehensive survey that includes 440 extant and 66 extinct species. Using a newly updated actinopterygian tree in combination with phylogenetic comparative analyses, we test whether osteichthyan...