Several dolphin lineages have independently invaded freshwater systems. Among these,
the evolution of the South Asian river dolphin Platanista and its relatives (Platanistidae) …

The giant tortoises of the Galápagos Archipelago influenced Darwin's early thinking on
transmutation and now constitute a famous example of island-based speciation and …

Colombophis was an alethinophidian snake that inhabited South America from Middle to
Late Miocene. Since its discovery, its position within the phylogenetic tree of snakes has …

Abstract The South American characiform family Hemiodontidae comprises five genera and
34 species. The family lacks comprehensive phylogenetic hypotheses resolving its species …

The middle Miocene rocks of the Honda Group (La Victoria and Villavieja formations) in the
Tatacoa Desert, Upper Magdalena River Valley, Colombia, possess one of the best studied …

Brazilian Miocene fluvial and lacustrine deposits are mainly found in the southwestern
Amazon basin in the state of Acre, where fossiliferous sections from the Middle to Late …

A small assemblage of 22 otoliths was identified from the historical collection of Bluntschli
and Peyer gathered in 1912 on the Itaya riverbank at Iquitos, Peru (Amazonia), from the …

The fossil collections made by early explorers in South America have been fundamental to
reveal the past diversity of extinct mammals and unravel their evolutionary history. One …

ABSTRACT The La Venta deposits (Colombia) record one of the most fossil-rich regions in
tropical South America and offers an exceptional opportunity to study the effect of the …

Freshwater fishes from northern Colombia are reported from the Sincelejo and Ware
formations, of Pliocene age. A total of ten taxa have been identified comprising two orders …