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 …

The spectacular fossil fauna and flora preserved in the Upper Cretaceous terrestrial strata of
North America's Western Interior Basin record an exceptional peak in the diversification of …

Interbasinal stratigraphic correlation provides the foundation for all consequent continental-
scale geological and paleontological analyses. Correlation requires synthesis of …

Despite dominating biodiversity in the Mesozoic, dinosaurs were not speciose. Oviparity
constrained even gigantic dinosaurs to less than 15 kg at birth; growth through multiple …

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 …

Fragmentary remains of a large, robustly built theropod dinosaur were recovered from the
marine middle Callovian Ornatenton Formation of north-eastern Northrhine-Westphalia …

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 …

Abelisaurids are medium–large‐sized theropod dinosaurs that were predominant in the
carnivorous fauna during the Late Cretaceous of Gondwana. These predators are abundant …

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