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Ecosystem that predates the dinosaurs uncovered in the Alps by melting snow (www.nbcnews.com)

submitted 15 hours ago by MicroWave to c/world

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Summary

Melting snow in the Italian Alps revealed a prehistoric ecosystem from the Permian period, predating dinosaurs by 280 million years.

The discovery, made by hiker Claudia Steffensen in 2023, includes well-preserved footprints of reptiles and amphibians, alongside traces of flora and invertebrates.

Paleontologists describe the find as unprecedented in quality and variety. The fossils, uncovered due to rising temperatures linked to climate change, highlight parallels between ancient environmental shifts and today’s climate crisis.

Researchers expect more discoveries as melting ice and erosion expose additional fossils.

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[–] [email protected] 2 points 10 hours ago* (last edited 10 hours ago)

At the time of the K-T extinction, we looked like this:

https://en.wikipedia.org/wiki/Purgatorius

The Cretaceous–Paleogene (K–Pg) extinction event,[a] also known as the K–T extinction,[b] was the mass extinction of three-quarters of the plant and animal species on Earth[2][3] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs. Most other tetrapods weighing more than 25 kg (55 lb) also became extinct, with the exception of some ectothermic species such as sea turtles and crocodilians.[4]

Omnivores, insectivores, and carrion-eaters survived the extinction event, perhaps because of the increased availability of their food sources. Neither strictly herbivorous nor strictly carnivorous mammals seem to have survived. Rather, the surviving mammals and birds fed on insects, worms, and snails, which in turn fed on detritus (dead plant and animal matter)

Luckily, great-grandaddy squirrel-critter was a survivor and had a taste for insects:

It is thought to have been rat-sized (6 in (15 cm) long and 1.3 ounces (about 37 grams)) and a diurnal insectivore, which burrowed through small holes in the ground.