Gene duplication provides raw material for functional innovation. Recent advances have
shed light on two fundamental questions regarding gene duplication: which genes tend to …

Abstract Fieldwork in the Early Cretaceous Jehol Group, northeastern China has revealed a
plethora of extraordinarily well-preserved fossils that are sha** some of the most …

Uncertainties in the phylogeny of birds (Avialae) and their closest relatives have impeded
deeper understanding of early theropod flight. To help address this, we produced an …

The authors contributed equally to this paper. Order of authorship was determined
alphabetically. Correspondence may be addressed to any of the authors. Adaptationism is a …

Discoveries of bird-like theropod dinosaurs and basal avialans in recent decades have
helped to put the iconic 'Urvogel'Archaeopteryx into context,,,, and have yielded important …

Coelurosauria is the most diverse clade of theropod dinosaurs. Much of this diversity is
present in Paraves—the clade of dinosaurs containing dromaeosaurids, troodontids, and …

Progress on the evolutionary origin and diversification of feathers has been hampered by
conceptual problems and by the lack of plesiomorphic feather fossils. Recently, both of these …

Dinosaurs were remarkably successful during the Mesozoic and one subgroup, birds,
remain an important component of modern ecosystems. Although the extinction of non-avian …

The rice species Oryza sativa is considered to be a model plant because of its small genome
size, extensive genetic map, relative ease of transformation and synteny with other cereal …

Abstract Fossils from the “Jehol Biota” have been studied for nearly 90 years, and the term
“Jehol Biota” has been extensively used and is well known today, largely thanks to the …