Evolution of the earliest mammals shows successive episodes of diversification. Lineage-
splitting in Mesozoic mammals is coupled with many independent evolutionary experiments …

Complex structures with significant biological function can arise multiple times in evolution
by common gene patterning and developmental pathways. The mammalian middle ear, with …

Placentals are the most abundant mammals that have diversified into every niche for
vertebrates and dominated the world's terrestrial biotas in the Cenozoic. A critical event in …

Estimates of the time of origin for placental mammals from DNA studies span nearly the
duration of the Cretaceous period (145 to 65 million years ago), with a maximum of 129 …

An appraisal of Paleogene floral and land mammal faunal dynamics in South America
suggests that both biotic elements responded at rate and extent generally comparable to …

The fluvial, lacustrine and tuffaceous sedimentary succession of the Cañadón Asfalto
continental basin exposed in the Argentinean Chubut Province of central Patagonia …

Maelestes gobiensis, is the second new eutherian mammal to be named from the rich
Mongolian Late Cretaceous locality of Ukhaa Tolgod, Ukhaatherium nessovi, being the first …

The idea that South America was an island continent over most of the Cenozoic, during
which its unusual mammalian faunas evolved in isolation, is outstandingly influential in …

Jaw morphology is closely linked to both diet and biomechanical performance, and jaws are
one of the most common Mesozoic mammal fossil elements. Knowledge of the dietary and …

Leukotrienes are pro-inflammatory lipid mediators, which are biosynthesized via the
lipoxygenase pathway of the arachidonic acid cascade. Lipoxygenases form a family of lipid …