Extant crocodylians have a limited taxonomic and ecological diversity but they belong to a
lineage ( C rocodylomorpha) that includes basal and rather generalized species and a highly …

The idea that South America was an island continent over most of the Cenozoic, during
which its unusual mammalian faunas evolved in isolation, is outstandingly influential in …

Although the image of crocodyliforms as ‘unchanged living fossils’ is naive, several morphological
features of the group are thought to have varied only within narrow limits during the …

New information on Dakosaurus andiniensis from the Latest Jurassic and Early Cretaceous
is reported here. One of the specimens described herein consists of an almost complete …

A new notosuchian crocodyliform from the Late Cretaceous Bauru Group found in the
southeastern State of São Paulo (Brazil) is described here. The new taxon, Caipirasuchus …

Fossil evidence for changes in dinosaurs near the lineage leading to birds and the origin of
flight has been sparse. A dinosaur from Mongolia represents the basal divergence within …

A common problem in phylogenetic analysis is the presence of unstable taxa that are
depicted in multiple positions in optimal topologies. These uncertainties are reflected in strict …

The development of distinct regions in the amniote vertebral column results from somite
formation and Hox gene expression, with the adult morphology displaying remarkable variation …

The fluvial, lacustrine and tuffaceous sedimentary succession of the Cañadón Asfalto continental
basin exposed in the Argentinean Chubut Province of central Patagonia preserves an …

Titanosauria was the most diverse and successful lineage of sauropod dinosaurs. This clade
had its major radiation during the middle Early Cretaceous and survived up to the end of …