Our results suggest that Arctic PETM precipitation was substantially D-enriched relative to today, with hydrogen isotopic compositions comparable with modern, mid-latitude precipitation 19. In general ...

The reign of the dinosaurs came to a catastrophic end 66 million years ago. That’s the common trope, anyway – a holdover from before we recognized that at least one feathery lineage survived and ...

A new genus of Theaceae, Andrewsiocarpon, from the Middle Eocene of southeastern North America, is described based on fruit and seed remains. Andrewsiocarpon is a loculicidally dehiscent five-valved ...

It's not often you find the term "gastronomically familiar" in a Nature article, much less in its very first sentence. But there are a number of unusual aspects to a paper on the origins of flatfish ...

Sea surface and subsurface temperatures over large parts of the ocean during the Eocene epoch (55.5-33.7 Ma) exceeded modern values by several degrees, which must have affected a number of oceanic ...

A new international analysis of marine fossils shows that warming of the polar oceans during the Eocene, a greenhouse period that provides a glimpse of Earth's potential future climate, was greater ...

The remarkably detailed fossil of a female Culiseta lemniscata mosquito from the Eocene. Two new mosquito species discovered in Eocene deposits from northwestern Montana reveal just how remarkably ...

The ischyromyids are the most primitive rodents that have a Holarctic Paleogene distribution. Members of the family are predominant in Paleogene rodents of North America, but are relatively rare in ...

The glacial cycles that have dominated the Earth’s recent past have been driven by a combination of orbital cycles and greenhouse forcing. But the relatively cool, rhythmic cycles appear to be an ...

Scientists have shown that the incidence of midge and fly larvae in amber is far higher than previously thought. The new finds shed light on insect evolution and the ecology in the Baltic amber forest ...