Mark P. Witton, David M. Martill and Robert F. Loveridge, 2010, "Clipping the Wings of Giant Pterosaurs: Comments on Wingspan Estimations and Diversity", Acta Geoscientica Sinica, 31 Supp.1: 79–81 Another possible contender for the largest pterosaur is Hatzegopteryx, which is also estimated to have had an 11 meters wingspan.