epochs of the Triassic Period of the geologic timescale. It spans the time between 251.9 Ma and 247.2 Ma (million years ago). Rocks from this epoch are...

Megatherium) inhabited both North and South America during the Pleistocene Epoch. However, they became extinct during the Quaternary extinction event around...

Paleocene epoch (around 60-58 mya), a period just after the Cretaceous–Paleogene extinction event. Before this discovery, few fossils of Paleocene-epoch vertebrates...

replenish depleted glutathione reserves in the liver and enhance non-toxic metabolism of acetaminophen. These actions serve to protect liver cells from NAPQI...

small dromaeosaurid dinosaurs that lived in Asia during the Late Cretaceous epoch, about 75 million to 71 million years ago. Two species are currently recognized...

Australian winter, it goes into deep torpor and hibernation, reducing its metabolism to save energy. As the temperature increases, it emerges to mate. Female...

Palaeophiidae. Described species within this genus lived in the Eocene epoch, with some unnamed or questionable records from Cenomanian and Maastrichtian...

defined descriptively by the capacity for homeostasis, organisation, metabolism, growth, adaptation, response to stimuli, and reproduction. All life over...

later writing, as seen most notably in Marx's exploration of “social metabolism” and Engels' passage on the “revenge of nature.” Although this facet of...

genus Varanus is believed to have originated in South Asia in the Miocene epoch around 20 million years ago, and the anatomy of its earliest members are...