Hacker News Comments on
The Day the Dinosaurs Died – Minute by Minute
Kurzgesagt – In a Nutshell
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All the comments and stories posted to Hacker News that reference this video.Heres a Kurzgesagt video with a few more details and a bit less dramatic: https://www.youtube.com/watch?v=dFCbJmgeHmA
This was visually much more informative: https://www.youtube.com/watch?v=dFCbJmgeHmA
⬐ sillysaurusxInformative, but slightly misleading.<pedant> Notice all the grass everywhere in that video. Grass wasn't around until 55 million years ago. The asteroid hit 66 million years ago. </pedant>
(I thought it was kinda neat that grass wasn't a thing for a long time...)
⬐ slipframe⬐ shusakuAccording to wikipedia, grass is now believed to be a bit older:> Before 2005, fossil findings indicated that grasses evolved around 55 million years ago. Findings of grass-like phytoliths in Cretaceous dinosaur coprolites from the latest Cretaceous (Maastrichtian) aged Lameta Formation of India have pushed this date back to 66 million years ago.[11][12] In 2011, revised dating of the origins of the rice tribe Oryzeae due to findings from the same deposit suggested a date as early as 107 to 129 Mya.[13]
Still, that seems surprisingly recent. Ginkgo trees are almost 3x older.
I enjoyed that video when he launched it, but since then I can’t help wonder: “if the damage was so severe, how did any dinos survive and evolve into birds?” I wonder if maybe it’s a more extreme version of events.⬐ Gibbon1What I get reading over the years is on land anything that couldn't crawl into burrow in the ground didn't make it.I think the answer with birds is they already existed as separate species from dinosaurs.
""Birds evolved from theropod dinosaurs during the Jurassic (around 165–150 million years ago) and their classic small, lightweight, feathered, and winged body plan was pieced together gradually over tens of millions of years of evolution rather than in one burst of innovation. Early birds diversified throughout the Jurassic and Cretaceous, becoming capable fliers with supercharged growth rates, but were decimated at the end-Cretaceous extinction alongside their close dinosaurian relatives.""
https://www.sciencedirect.com/science/article/pii/S096098221...
⬐ simonhSo there was a huge variety of bird-like creatures at the time of the strike, and today's birds are descended from the small number of these that survived. Possibly even from a single surviving species.