Spanning more than 66 million years, the Cenozoic Era shaped the world we live in today. From the rise of mammals to the emergence of modern humans, this era tells a story of survival, evolution, and ...

Australia’s past is older, wilder, and stranger than you can imagine. From cyanobacteria billions of years ago to thunderous ...

This is a volume of collected papers published to honor the career of Clayton E. Ray, now Curator Emeritus in the Department of Paleobiology, National Museum of Natural History, Smithsonian ...

According to a new study from an international team led by researchers, the oxygen-deficient zones that occur in the open ocean shrank in long warm periods of the past. When oxygen becomes scarce, ...

The Cenozoic era began about 65 million years ago and continues into the present. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The Cenozoic ...

The early Palaeogene marine environment can be characterized as warm, ice-free, brackish and biologically productive, resulting in the accumulation of siliciclastic sediments with high (up to 14%) ...

Mammal species diversified more rapidly early in their history – peaking roughly 66 million years ago – before a long-term decline in diversification punctuated by diminishing bursts of evolutionary ...

A new marsupial-like carnivorous animal that lived more than 40 million years ago in what is now Turkey may have evolved in the absence of competition from placental mammals, according to a study ...

Traditional use of molluscan genera and species as paleobathymetric indicators requires the assumption that evolutionary change has not occurred. However, bathymetric ranges of taxa may be altered ...

When oxygen becomes scarce, life has a hard time. This is just as true for mountain regions above 7000 meters but also for bodies of water. For example, in tropical ocean regions off of West America ...