Acrocanthosaurus: the high‑spined theropod of the Lower Cretaceous Acrocanthosaurus Acrocanthosaurus was a large high‑spined theropod from Lower Cretaceous North America, notable for tall neural spines, robust forelimbs, and its likely placement among the carcharo…
Aurornis xui: basal bird-like theropod from Late Jurassic–Early Cretaceous China Aurornis Aurornis xui, a basal bird-like theropod from Late Jurassic–Early Cretaceous China, known from a near-complete fossil; its age and primitive features illuminate early avian evoluti…
Bayannurosaurus — Early Cretaceous ankylopollexian ornithopod Bayannurosaurus Bayannurosaurus is a mid-sized Early Cretaceous ornithopod from China (described 2018). A non-hadrosauriform ankylopollexian with an ~80 cm skull, important for understanding iguan…
