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New study solves long-standing mystery of what may have triggered ice age by Daniel Stolte, University of Arizona, PhysOrg, June 24, 2022 The paper is: Marcus Lofverstrom, and others, The importance of Canadian Arctic Archipelago gateways for glacial expansion in Scandinavia, Nature Geoscience (2022). Yours, Paul H.
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Late Cretaceous Dinosaurs Were Not In Decline Prior to Mass Extinction
Scylla posted a topic in Fossil News
Modeling ecological niches and climate gives a different estimate of dinosaur diversity prior to the mass extinction. Implies that differential fossilization accounts for the apparent decline https://m.phys.org/news/2019-03-dinosaurs-asteroid.html- 1 reply
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Courtsey of the Smithsonian NMNH This climate model shows global temps for a year in the life of a Stegosaurus, and other species that lived 155 MYA. Climate models are made using complex physics & math and they are validated using our knowledge of climate in the ancient past and lots of data from fossils. A bit warm summer all year DZd0IutXcAA7TC-.mp4
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