1. Department of Earth SciencesUniversity of Oxford OX1 3AN Oxford U.K.
2. BOREA (UMR 7208 CNRS, IRD, MNHN, Sorbonne Université)Muséum national d'Histoire naturelle 75005 Paris France
3. Museum of Paleontology and Department of Earth and Environmental SciencesUniversity of Michigan Ann Arbor MI 48109‐1079 U.S.A.
4. PalEvoPrim (UMR 7262 CNRS)Université de Poitiers 86000 Poitiers France