The discovery, made public Wednesday, includes well-preserved footprints of reptiles and amphibians that scientists say date back 280 million years.

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.

  • FourPacketsOfPeanuts@lemmy.worldEnglish
    17·
    1 month ago

    Even now and then it just catches me how absolutely insane it is how long the planet sustained complex life without any humans whatsoever. We’re an evolutionary accident. A footnote consequence of unlikely circumstance. Were it not for a number of unlikely destructive events this planet might have quite happily continued ad infinitum with only dinosaurs on it. Can you imagine that, if this whole universe had happened and this one random blue marble had dinosaurs on it and not a single minded being anywhere to appreciate the magnificent insanity of it all?

    • Rhaedas@fedia.io
      7·
      1 month ago

      I believe there’s some thinking now that dinosaurs weren’t doing all that well, stagnating, so without a meteor and volcanic activity they still would have changed in some manner eventually. But perhaps not enough to let the mammals fill any niches.

      What gets me is how long life was on Earth just as single cell forms, and then suddenly, recently, it took off to bigger things.

    • tal@lemmy.todayEnglish
      31·
      1 month 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.