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 …

Despite nearly two centuries of investigation, a comprehensive understanding of dinosaur
biology has proven intractable. The recent development of means to study tissue-level …

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 …

Abstract The Late Cretaceous was a time of tremendous global change, as the final stages
of the Age of Dinosaurs were shaped by climate and sea level fluctuations and witness to …

The defining masterwork on the evolution of reptiles. Over 300 million years ago, an early
land vertebrate developed an egg that contained the embryo in an amnion, allowing it to be …

The last two decades have seen a remarkable increase in the known diversity of basal
avialans and their paravian relatives. The lack of resolution in the relationships of these …

Phylonyms is an implementation of PhyloCode, which is a set of principles, rules, and
recommendations governing phylogenetic nomenclature. Nearly 300 clades-lineages of …

The iconic primeval bird Archaeopteryx was so far mainly known from the Altmühltal
Formation (early Tithonian) of Bavaria, southern Germany, with one specimen having been …

The famous 'feathered dinosaurs' from the Early Cretaceous of Liaoning Province,
northeastern China, include several dromaeosaurids, which are among the closest relatives …

This chapter will cover clade definitions, the relationships within clades as well as the
occasional controversial relationships between different clades. Phylogenies arising from a …