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 emergence of gigantic pliosaurid plesiosaurs reshaped the trophic structure of
Mesozoic marine ecosystems, and established an~ 80 million-year (Ma) dynasty of …

Marine reptiles flourished in the Mesozoic oceans, filling ecological roles today dominated
by crocodylians, large fish, sharks and cetaceans. Many groups of these reptiles coexisted …

Two of the best known Mesozoic marine reptile assemblages can be found in units
deposited in the Jurassic Sub-Boreal Seaway of the UK: the late Middle Jurassic Oxford …

Plesiosaurs were the longest-surviving group of secondarily marine tetrapods, comparable
in diversity to today's cetaceans. During their long evolutionary history, which spanned the …

Leptocleidus Andrews, 1922 is a poorly known plesiosaur genus from Lower Cretaceous
successions of the UK, South Africa, and Australia. Historically, there has been little …

Pliosaurid marine reptiles played important roles in marine food chains from the Middle
Jurassic to the middle Cretaceous, frequently as apex predators. The evolution of …

ABSTRACT A new pliosaurid specimen found in the Barremian beds of Sáchica, a town
near Villa de Leiva, representing the more complete skeleton found in the region is …

From one of the most complete Lower Cretaceous rock sequences in the world (in Villa de
Leiva region, central Colombia), we describe a new genus and species of pliosaurid …

Throughout their evolution, tetrapods have repeatedly colonised a series of ecological
niches in marine ecosystems, producing textbook examples of convergent evolution …