Tyrannosaurs, the group of dinosaurian carnivores that includes Tyrannosaurus rex and its
closest relatives, are icons of prehistory. They are also the most intensively studied extinct …

Birds and mammals are key elements of modern ecosystems, and many biologists explain
their great success by their endothermy, or warm-bloodedness. New palaeontological …

Abundant lake ice-rafted debris in Late Triassic and earliest Jurassic strata of the Junggar
Basin of northwestern China (paleolatitude~ 71° N) indicates that freezing winter …

Spectacular fossils from the Early Cretaceous Jehol Group, of northeastern China have
greatly expanded our knowledge of the diversity and palaeobiology of dinosaurs and early …

But how to begin a beginning? A strange sound interrupted my tossing. I went to the window,
the cold air against my eyes. At first I saw only starlight. Then they were there. Up in the …

The feather is a complex ectodermal organ with hierarchical branching patterns. It provides
functions in endothermy, communication, and flight. Studies of feather growth, cycling, and …

The study of the Early Cretaceous terrestrial Jehol Biota, which provides a rare window for
reconstruction of a Lower Cretaceous terrestrial ecosystem, is reviewed with a focus on …

Recent discoveries of feathered dinosaur specimens have greatly improved our
understanding of the origin and early evolution of feathers, but little information is available …

In the last twenty years, the extraordinary discoveries of vertebrate fossils from the Jehol
Biota not only have important implications for studying the evolution of major Mesozoic …

Modern birds are typified by the presence of feathers, complex evolutionary innovations that
were already widespread in the group of theropod dinosaurs (Maniraptoriformes) that …