Background and Research Aims: Globally, Colombia is the country with the largest extent of
Páramos (delimited in 36 complexes) and with the greatest number of amphibian species in …

Large-scale, time-calibrated phylogenies from supermatrix studies have become crucial for
evolutionary and ecological studies in many groups of organisms. However, in frogs (anuran …

Amphibians have undergone important evolutionary transitions in reproductive modes and
life-cycles. We compare large-scale macroevolutionary patterns in these transitions across …

Abstract The Aves Ridge in the eastern Caribbean Sea is thought by many to have operated
as a short-lived, mid-Cenozoic, dry-land path that was used by the ancestors of a number of …

A phylogenetic analysis of sequences from 503 species of hylid frogs and four outgroup taxa
resulted in 16,128 aligned sites of 19 genes. The molecular data were subjected to a …

Frogs (Anura) are one of the most diverse groups of vertebrates and comprise nearly 90% of
living amphibian species. Their worldwide distribution and diverse biology make them well …

The extant amphibians are one of the most diverse radiations of terrestrial vertebrates (>
6800 species). Despite much recent focus on their conservation, diversification, and …

Brachycephaloidea is a monophyletic group of frogs with more than 1000 species
distributed throughout the New World tropics, subtropics, and Andean regions. Recently, the …

Mexico is the country with the most significant herpetofaunal diversity and endemism in
Mesoamerica. Anthropogenic threats to Mexico's reptiles are growing exponentially …

Ecuador is one of the most biodiverse countries in the world, but faces severe pressures and
threats to its natural ecosystems. Numerous species have declined and require to be …