We investigate a neutral model for speciation and extinction, the constant rate birth–death
process. The process is conditioned to have n extant species today, we look at the tree …

Mountains are often more species‐rich than lowlands. This could be the result of migration
from lowlands to mountains, of a greater survival rate in mountains, or of a higher …

Deserts, even those at tropical latitudes, often have strikingly low levels of plant diversity,
particularly within genera. One remarkable exception to this pattern is the genus Petalidium …

Cryptic species are a common phenomenon in cosmopolitan marine species. The use of
molecular tools has often uncovered cryptic species occupying a fraction of the geographic …

Several taxonomic and phylogenetic studies have hypothesized polyphyly within Pueraria
DC., a genus comprising 19 species (24 with varieties) including the highly invasive …

Today, elasmobranchs are one the most threatened vertebrate groups worldwide. In fact, at
least 90% of elasmobranch species are listed in the International Union for Conservation of …

Background At the end of the Pliocene and the beginning of Pleistocene glaciation and
deglaciation cycles Ginkgo biloba went extinct all over the world, and only few populations …

A series of Bayesian molecular clock analyses with varying model combinations,
parameters, and tree topologies were conducted to establish a temporal evolutionary …

Bald uakaris, genus Cacajao, are Amazonian primates currently classified as one species
and four subspecies based on the patterns of pelage coloration. In this study, we test if their …

The catfish subfamily Trichomycterinae is widely distributed in South America inhabiting
several habitats, but specially mountain streams. Trichomycterus is the most speciose …