This paper presents the first complete estimate of the phylogenetic relationships among all
197 species of extant and recently extinct ruminants combining morphological, ethological …

The relationships among the living apes and modern humans have effectively been
resolved, but it is much more difficult to locate fossil apes on the tree of life because shared …

The author shares some lessons learned from a lifetime of working with and thinking about
groups. Three types of groups are described, including the impact they have on the …

The social brain hypothesis argues that large brains have arisen over evolutionary time as a
response to the social and ecological conflicts inherent in group living. We test predictions …

The ruminants constitute the largest group of ungulates, with> 190 species, and its
distribution is widespread throughout all continents except Australia and Antarctica. Six …

As the brain is responsible for managing an individual's behavioral response to its
environment, we should expect that large relative brain size is an evolutionary response to …

Organisms living at high altitude are exposed to severe environmental stress associated
with decreased oxygen pressure, cold temperatures, increased levels of UV radiation, steep …

Despite the biological and economic importance of the Cetartiodactyla, the phylogeny of this
clade remains controversial. Using the supertree approach of matrix representation with …

The hares and rabbits belonging to the family Leporidae have a nearly worldwide
distribution and approximately 72% of the genera have geographically restricted …

Hypsodonty has long been recognized as an adaptation for grazing: grazing is suggested to
increase tooth wear due to endogenous (eg, fiber, silica) and/or exogenous (eg, dust, grit) …