Here, we describe a new species of stocky and short-legged pudu from the Peruvian Andes. This is the first cervid species described in the 21st century and
Tyrannosaurus rex (del griego latinizado tyrannus 'tirano' y saurus 'lagarto', y el latín rex, 'rey') [1 ] es una especie y tipo del género extinto Tyrannosaurus de dinosaurio terópodo tiranosáurido, que vivió a finales del período…
Phylogenetic hypotheses of higher-level relationships in the order Charadriiformes based on morphological data, partly disagree with those based on DNA-DNA hybridisation data. So far, these relationships have not been tested by analysis of…
Ships have remained contentious. In this study, we included 32 testudinid species (all genera and subgenera, and all species of Geochelone, representing 65% of the total familial species diversity), and both mitochondrial (12S rRNA, 16S rRNA…
The Somali Sengi or Somali Elephant-shrew (‘Elephantulus’ revoilii, Macroscelidea, Mammalia) has been considered a “lost species” and is primarily known from about 39 museum specimens, with no new vouchered occurrence records since the…
In comparative neurobiology, major transitions in behavior are thought to be associated with proportional size changes in brain regions. Bird-line theropod dinosaurs underwent a drastic locomotory shift from terrestrial to volant forms…
Background With over 3,500 species encompassing a diverse range of morphologies and ecologies, snakes make up 36% of squamate diversity. Despite several attempts at estimating higher-level snake relationships and numerous assessments of…