Browsing the "Paleogene" Category

The Paleogene period is a division of earth’s history spanning from around 66 to 23 million years ago, and during which life recovered following the end Cretaceous mass extinction. The Paleogene was a warm stable period with temperatures on average 4°C above present. However, around 55 million years ago, the planet experienced a short but severe warming phase. During the Paleogene, the continents continued to disperse. The Indian and Atlantic oceans widened while the Tethys Ocean gradually closed as Africa collided with Europe and India collided with Asia leading to Alpine and Himalayan mountain building. Drake’s passage opened between South America and Antarctica leading to cooling of the southern continent. On land and in the oceans, mammals became increasingly diverse and abundant. Most of the major mammal groups, from primates to whales, first appeared within the Paleogene. Birds also continued to diversify. One of the most successful plant groups; the grasses, also evolved during this time. By the end of the period, the Antarctic ice sheet had begun to form accompanied by global cooling and sea level fall.


Episode 130: Bats

Published on October 30th, 2021 | by David Marshall

We examine the fossil record of bats in this nominally Halloween-themed episode... Read More


Episode 103: Terror birds

Published on September 15th, 2019 | by Liz Martin-Silverstone

Terror birds, or phorusrhacids as they are known scientifically, are a group of large, flightless birds that lived during the Cenozoic, and truly lived up to their name. Known for their large, powerful skulls, and enormous [&hellip... Read More

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