The colonisation of freshwater and marine ecosystems by land vertebrates has repeatedly
occurred in amphibians, reptiles, birds and mammals over the course of 300 million years …

The terrestrial origins of the diapsid Sauropterygia and Testudines are uncertain, with the
latter being highly controversially discussed to this day. For only 15 Ma, Nothosauroidea …

The holotype of Brancasaurus brancai is one of the most historically famous and
anatomically complete Early Cretaceous plesiosaurian fossils. It derived from the …

Secondary aquatic vertebrates exhibit a diversity of swimming modes that use paired limbs
and/or the tail. Various secondarily aquatic tetrapod clades, including amphibians, reptiles …

Plesiosaurians are an extinct group of highly derived Mesozoic marine reptiles with a global
distribution that spans 135 million years from the Early Jurassic to the Late Cretaceous …

Even though a handful of long-lived reptilian clades dominated Mesozoic marine
ecosystems, several biotic turnovers drastically changed the taxonomic composition of these …

The upper Maastrichtian elasmosaurid plesiosaur Aristonectes quiriquinensis from central
Chile is here redescribed following further preparation of the holotype. New cranial …

The evolution and function of the long neck in plesiosaurs, and how the problems
associated with stiffness or flexibility were overcome during feeding, or rapid swimming …

Described in 1858, Trematospondylus macrocephalus is one of the earliest established
plesiosaur taxa. However, despite being historically significant, the taxon disappeared from …

Extinct worlds live again in palaeoart: artworks of fossil animals, plants and environments
carefully reconstructed from palaeontological and geological data. Such artworks are …