Morphology forms the most fundamental level of data in vertebrate palaeontology because it
is through interpretations of morphology that taxa are identified, creating the basis for broad …

The study of the origin and early evolution of birds has never produced as much excitement
and public attention as in the past decade. Well preserved and abundant new fossils of birds …

In The Genesis of Animal Play, Gordon Burghardt examines the origins and evolution of play
in humans and animals. He asks what play might mean in our understanding of evolution …

The primary function of ripe, fleshy fruit is to facilitate seed dispersal by attracting
consumers,, yet many fruits contain unpleasant-tasting chemicals that deter consumption by …

Abstract Charles Darwin commented that Ichthyornis, as one of the “toothed birds” from the
Late Cretaceous of Kansas, offered some of “the best support to the theory of evolution”(in …

A fossil enantiornithine bird, Protopteryx fengningensis gen. et sp. nov., was collected from
the Early Cretaceous Yixian Formation of Northern China. It provides fossil evidence of a …

This work serves as a compendium of anatomical resources upon which a companion
phylogenetic analysis of Aves and related Theropoda (Avialae) was based. Following a brief …

Between 1974and 1976, JF Bonaparte (then of the Universidad Nacional de Tucumán,
Argentina) quarried a site within the continental deposits of the Maastrichtian Lecho …

A dearth of Mesozoic-aged, three-dimensional fossils hinders understanding of the origin of
the distinctive skull and brain of modern (crown) birds. Here we report Navaornis hestiae …

Two new, nearly completely articulated skeletons of Sapeornis chaoyangensis provide
much new information about the anatomy of this basal avian, particularly in the skull …