Andreas Hejnol, Matthias Obst, Alexandros Stamatakis, Michael Ott, Greg W Rouse, Gregory D Edgecombe, Pedro Martinez, Jaume Baguñà, Xavier Bailly, Ulf Jondelius, Matthias Wiens, Werner EG Müller, Elaine Seaver, Ward C Wheeler, Mark Q Martindale, Gonzalo Giribet, Casey W Dunn

2009/12/22

Proceedings of the Royal Society of London B: Biological Sciences

276

1677

4261-4270

The Royal Society

A clear picture of animal relationships is a prerequisite to understand how the morphological
and ecological diversity of animals evolved over time. Among others, the placement of the
acoelomorph flatworms, Acoela and Nemertodermatida, has fundamental implications for
the origin and evolution of various animal organ systems. Their position, however, has been
inconsistent in phylogenetic studies using one or several genes. Furthermore, Acoela has
been among the least stable taxa in recent animal phylogenomic analyses, which ...