#chicxulub — Public Fediverse posts

L’impact de Chicxulub
🔸 Il y a environ 66 millions d'années, un impact d'astéroïde a anéanti les trois quarts de toutes les espèces végétales et animales sur Terre, détruisant notamment les dinosaures.
https://arstechnica.com/science/2026/07/dust-cloud-from-dino-killing-asteroid-charbroiled-the-earth/
#science #paléontologie #astéroïde #impact #vue #arstechnica #Chicxulub #Mexique #pollution #poussière #extinction #Terre #géologie #dinosaures #animaux #végétation #ère

Brought out from a discussion elsenet: would Earth now be warm enough to support large, #nonavian #dinosaurs today? This is a fair question, because as bad as global warming is—and it's going to get worse—we're still nowhere near the hottest times of the #Mesozoic.

The answer is, it was *generally* warmer than the present day, but #global #temperatures went up and down considerably, as you'd expect over such a long stretch of time—about 175 million years from the first dinosaurs to the #Chicxulub impact. Dinosaurs as a #clade did fine the whole way through, although of course with plenty of various groups dying out in the meantime.

Also, the planet has always had warmer and cooler regions. Many large dinosaurs lived comfortably in polar regions that had #climates comparable to the cooler parts of the temperate zones today. The idea that non-avian dinosaurs exclusively inhabited steaming jungles or baking deserts has been embedded by generations of paleoart, but it's just wrong. If the impact hadn't happened, they'd still be thriving.

That being said, #sauropods in particular seemed to prefer warmer environments, so their range might be a lot more limited now than it was then, and it's possible the ice age(s) would have finished them off. Other famous giants like #tyrannosaurs, #ceratopsians, and #hadrosaurs would still be widespread, and smaller ones like #dromaeosaurs ("raptors") would be as numerous as coyotes and wildcats are in our world.

Dinokiller-Einschlag: Krater als Oase? Wieso sich das Leben am Einschlagsort so schnell erholte. #Chicxulub #Dinokiller #Einschlagskrater #Kreidezeit #Massenaussterben
https://www.scinexx.de/news/geowissen/dinokiller-einschlag-krater-als-oase/

My 25 years of palaeoart chronology...

Some zooms from my 2022 painting of a Thescelosaurus (front lit by the low Sun from the west) amidst the Tanis devastation caused by the end Cretaceous Chicxulub asteroid impact. Also features are Triceratops and Quetzalcoatlus.

#Art #Painting #PaleoArt #PalaeoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Birds #Reptiles #Palaeontology #Paleontology #Chicxulub #Thescelosaurus #Tanis #Triceratops #Quetzalcoatlus #JurassicPark #JurassicWorld

My 25 years of palaeoart chronology...

Here's a 2022 painting of a Thescelosaurus (front lit by the low Sun from the west) amidst the Tanis devastation caused by the end Cretaceous Chicxulub asteroid impact (the orange glow from the south). Also features are Triceratops and Quetzalcoatlus.

#Art #Painting #PaleoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Birds #Reptiles #Palaeontology #Paleontology #Chicxulub #Thescelosaurus #Tanis #Triceratops #Quetzalcoatlus #JurassicWorld

Der Dinokiller kam von jenseits des Jupiter. "Täterprofil" des Chicxulub-Impaktors liefert neue Hinweise auf Art und Herkunft. #Chicxulub #Asteroid #Dinokiller #Einschlag #Erdgeschichtwe #Massenaussterben
https://www.scinexx.de/news/geowissen/der-dinokiller-kam-von-jenseits-des-jupiter/