But, alas, the mosasaurs were not dinosaurs. As with plesiosaurs, the biggest giveaway is its habitat: “With the exception of some birds, for example penguins, dinosaurs lived on land ...

Two recently discovered bird fossils from the Late Jurassic Zhenghe Fauna demonstrate that highly derived bird-like features and the origin of birds appeared much earlier in the Jurassic period ...

The research highlights an evolutionary detour that runs counter to other ancient marine reptiles like ichthyosaurs and mosasaurs, which evolved away from scales in favour of skin, or much smaller ...