A new specimen of Heterodontosaurus elucidates how ornithischian dinosaurs evolved a body plan substantially different from that of other dinosaurs and what these differences meant for their breathing.

Ornithischians, one of the three major groups of dinosaurs, developed a unique mechanism to ensure airflow in the lungs.

Yuxisaurus represents the first unambiguous armored dinosaur to be recovered from the Lower Jurassic of Asia, confirming the rapid geographic spread and diversification of the armored dinosaurs throughout the northern hemisphere early in their evolution.

Computed tomography data reveal large and adult-looking inner ears in very young individuals of the long-necked dinosaur Europasaurus holgeri suggesting precociality in this dwarfed island dweller from the Late Jurassic of Germany.

The tooth replacement pattern of early-diverging ceratopsians helps to understand the origin of the specialized dental system of ceratopsids and provides new insights to feeding strategy transition.

Subterranean fossil bone hosts a living microbiome different from the surrounding sediment without evidence of original protein preservation.

The most prolific and oldest locality in which a rich dinosaur bonebed and fossiliferous amber have been found in association is revealed, allowing the reconstruction of an ancient terrestrial ecosystem with a detail and accuracy reached only exceptionally in palaeontology.