An international team of researchers led by botanists at the University of Vienna, Austria, has analyzed the morphological diversity of fossilized flowers and compared it with the diversity of living species. They found that ...
Evolution
12 hours ago
2
1
Early birds had made it to southern polar environments by 120 million years ago, according to a study published November 15, 2023 in the open-access journal PLOS ONE by Anthony Martin of Emory University, U.S. and colleagues.
Paleontology & Fossils
Nov 15, 2023
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131
Hundreds of millions of years ago, the surface of the Earth looked very different from how we see it today. There were just two continents: Laurasia and Gondwanaland. The present Indian subcontinent was part of Gondwanaland, ...
Earth Sciences
Nov 1, 2023
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31
Sixty-six million years ago, the Cretaceous period ended. Dinosaurs disappeared, along with around 90% of all species on Earth. The patterns and causes of this extinction have been debated since paleontology began. Was it ...
Paleontology & Fossils
Sep 26, 2023
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75
A study has unveiled a previously unknown mechanism that significantly influences Earth's climate.
Earth Sciences
Sep 12, 2023
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68
Right at the bottom of the deep sea, the first very simple forms of life on Earth probably emerged a long time ago. Today, the deep sea is known for its bizarre fauna. Intensive research is being conducted into how the number ...
Paleontology & Fossils
Sep 5, 2023
0
68
University of Alaska Fairbanks scientists have discovered and documented the largest known single dinosaur track site in Alaska. The site, located in Denali National Park and Preserve, has been dubbed "The Coliseum" by researchers.
Paleontology & Fossils
Aug 14, 2023
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214
Scientists from St Petersburg University as part of a research team have studied bones of hadrosaurid dinosaurs, or duck-billed dinosaurs, found in Chukotka. They were able to confirm that 66 million years ago the climate ...
Ecology
Aug 2, 2023
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28
Two groups in the UPV/EHU's Department of Geology have recently each published papers that demonstrate the versatility of analyzing the microfauna present in marine sediments.
Earth Sciences
Jul 28, 2023
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1
A badger-like mammal was sinking its teeth into the ribs of a dinosaur three times its size when they were buried in volcanic ash 125 million years ago, capturing the pair in a deadly embrace.
Paleontology & Fossils
Jul 22, 2023
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The Cretaceous (pronounced /kriːˈteɪʃəs/), Latin language for "chalky", usually abbreviated K for its German translation Kreide (chalk), is a geologic period and system from circa 145.5 ± 4 to 65.5 ± 0.3 million years ago (Ma). In the geologic timescale, the Cretaceous follows on the Jurassic period and is followed by the Paleogene period. It is the youngest period of the Mesozoic era, and at 80 million years long, the longest period of the Phanerozoic eon. The end of the Cretaceous defines the boundary between the Mesozoic and Cenozoic eras. In many foreign languages this period is known as "chalk period".
The Cretaceous was a period with a relatively warm climate and high eustatic sea level. The oceans and seas were populated with now extinct marine reptiles, ammonites and rudists; and the land by dinosaurs. At the same time, new groups of mammals and birds as well as flowering plants appeared. The Cretaceous ended with one of the largest mass extinctions in Earth history, the K-T extinction, when many species, including the dinosaurs, pterosaurs, and large marine reptiles, disappeared.
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