Discrete character-taxon matrices are increasingly being used in an attempt to understand
the pattern and tempo of morphological evolution; however, methodological sophistication …

Marine and terrestrial animals show a mosaic of lineage extinctions and diversifications
during the J urassic–C retaceous transition. However, despite its potential importance in …

Titanosauriforms represent a diverse and globally distributed clade of neosauropod
dinosaurs, but their inter-relationships remain poorly understood. Here we redescribe …

Ornithischians form a large clade of globally distributed Mesozoic dinosaurs, and represent
one of their three major radiations. Throughout their evolutionary history, exceeding 134 …

Resolving the evolutionary relationships of early diverging ('basal') ornithischian dinosaurs
is a challenging topic in palaeontology, with multiple competing hypotheses on the …

The L ate J urassic to E arly C retaceous interval represents a time of environmental
upheaval and cataclysmic events, combined with disruptions to terrestrial and marine …

The origin and evolutionary relationships of ornithischian dinosaurs are topics that have
undergone a series of substantial revisions. At present there are several competing …

The Ankylosauria is a group of herbivorous, quadrupedal, armoured dinosaurs subdivided
into at least two major clades, the Ankylosauridae and the Nodosauridae. The most derived …

Previous attempts to resolve plesiosaurian phylogeny are reviewed and a new phylogenetic
data set of 66 taxa (67% of ingroup taxa examined directly) and 178 characters (eight new) …

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 …