Dating the tree of life is a core endeavor in evolutionary biology. Rates of evolution are
fundamental to nearly every evolutionary model and process. Rates need dates. There is …

In this classic segment, many tectonic processes, like flat-subduction, terrane accretion and
steepening of the subduction, among others, provide a robust framework for their …

This paper describes a new species of elasmosaurid plesiosaur, Aristonectes
quiriquinensis, sp. nov., based on a partial skeleton recovered from upper Maastrichtian …

The Andes are thought to be formed through discrete contractional stages separated by
periods of little to no orogenic construction. This paper analyzes the intervals between the …

Fossil hydrocarbon seeps are present in latest Cretaceous (Maastrichtian) volcaniclastic
shallow shelf sediments exposed on Snow Hill and Seymour Islands, James Ross Basin …

In Chile, the record of dinosaurs in Jurassic and Cretaceous sediments is often restricted to
footprints, with few skeletal remains. Tetanuran theropods are known in the Upper Jurassic …

Upper Cretaceous vertebrate records from Chile are mostly known by historical mentions
with unknown repositories and uncertain stratigraphic provenance. This contribution reviews …

An almost complete postcranial skeleton recovered from late Maastrichtian beds of central
Chile, which can be confidently referred to the clade Elasmosauridae (Sauropterygia …

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

One of the most expanded records to contain the final fortunes of ammonoid cephalopods is
within the López de Bertodano Formation of Seymour Island, James Ross Basin, Antarctica …