Pterosaur fossils can get pretty messed up over 150 million years. Most of that happens during their lifetime or shortly thereafter as they sink into sediments.
Wukongopterus (IVPP V15113 , Wang et al. 2009) is a not-quite complete specimen that preserves a broken leg (Fig. 1). The Daohugou Bed of the Tiaojishan Formation was originally described as Early Cretaceous, but is now dated to the Middle/Late Jurassic boundary. This makes more sense with regard to phylogenetic order.
Wang X, Kellner AWA, Jiang S and Meng X 2009. An unusual long-tailed pterosaur with elongated neck from western Liaoning of China. Anais da Academia Brasileira de Ciências 81 (4): 793–812.