4 ms·
A treasure trove of fossils rewrites the story of early life
- wewewedxfgdf 5mo agoThe Cambrian period has to be the most interesting period in Earth's history. A close second is the period where the monkeys started wearing clothes, driving cars and programming computers.
- nntwozz 5mo agoWe're apes, friend.
- thejohnconway 5mo agoApes are a subset of monkeys.
- ourmandave 5mo agoPrimates.
- metalman 5mo agoPrimeats, from many perspectives.
- tokai 5mo agoTop pendantry. The words are interchangeable in daily speech. This is a comment section, not a journal.
- m0llusk 5mo agoIt turns out to be more interesting than that. For example, there is no other ape with skin resembling that of marine mammals. And that is just a start. Mankind is seriously weird.
- greenbit 5mo agoOr maybe just before that, when they started wearing digital watches.
- Cpoll 5mo agoThe first digital watch was from 1972.
- wavemode 5mo agoThey were making a joke that digital watches are outdated/out-of-style.
- kirubakaran 5mo agohttps://www.goodreads.com/quotes/54481-far-out-in-the-uncharted-backwaters-of-the-unfashionable-end https://www.goodreads.com/quotes/54481-far-out-in-the-unchar... “Far out in the uncharted backwaters of the unfashionable end of the western spiral arm of the Galaxy lies a small unregarded yellow sun. Orbiting this at a distance of roughly ninety-two million miles is an utterly insignificant little blue green planet whose ape-descended life forms are so amazingly primitive that they still think digital watches are a pretty neat idea.” ― Douglas Adams, The Hitchhiker’s Guide to the Galaxy
- greenbit 5mo agoYes. That.
- mrsvanwinkle 5mo agoBeat me to it tho was gonna mention instead the exchanging of pieces of leaves part (engineering students in my uni just before 2020 were humanities averse/have compartmentalized knowledge and not well-read, 2 professors passionate about HHGG had their references meet a handful of knowing laughs in a hall of hundreds e.g. "bring a towel" and "this invisibility is powered by the Somebody Else's Problem field" and as you can see even you are seeing it on HN lmao)
- compiler-devel 5mo agoIf we’re just another animal that can program computers, then I don’t feel bad about the take over of AI and LLMs as we’re nothing special in the evolutionary climb upwards.
- dkga 5mo agoWhat a treasure indeed! I just didn‘t understand why this particular site had so well-preserved soft tissue fossils? I assume it is probably related to the geology of the site during formation of the fossils, and probably the researchers themselves are not quite sure. But I would love to know more, if anyone here understands about this sort of thing.
- arnsholt 5mo agoIf I had to guess, they probably have some ideas. In Your inner fish (an excellent book, BTW) Neil Shubin has an afterword where he describes roughly how they went about deciding where to look for Tiktaalik. Basically, you start with whatever thing you want to find out more about; in the case of Tiktaalik, the transition of tetrapods from aquatic to terrestrial living. So you start by finding out where you have exposed sedimentary rocks of the correct age likely to be contain fossils. Next, you also need to the rocks to expose the right kind of environment: desert sands or deep ocean environments aren't going to help you find Tiktaalik, for that you need shallow waters and intertidal zones. Finally, it needs to be somewhere you can get to. So in this case, I wouldn't be surprised if they were purposefully looking for soft body preservation (especially since I think Cambrian fauna generally was quite soft and squishy). From memory, to get fossilised soft tissues you want the remains to be buried extremely rapidly in an environment where the soft tissues don't decay (typically an anoxic environment, so for a shale basically covered in mud). So a mudslide is one option, and I think there are some lovely fossils North American from the end of the Cretaceous that are hypothesised to have been buried by the tidal wave caused by the Chicxulub impact. Edit: After some googling, the Cretaceous fossils I was thinking of is Tanis,[0] which is in fact plausibly (but not universally) thought to be covered by the earthquake caused by the impact, before the tidal wave arrived. 0: https://en.wikipedia.org/wiki/Tanis_(fossil_site) https://en.wikipedia.org/wiki/Tanis_(fossil_site)
- alehlopeh 5mo agoStart with whatever thing you want to know more about. Then draw the rest of the owl
- cess11 5mo ago"the first major blossoming of modern biodiversity." What does "modern" mean in this discourse?
- tokai 5mo agoLife before the Cambrian was weird, and does not fit neatly with the type of live and diversity we see from the Cambrian til now.
- throwup238 5mo agoMost of the major phyla that exist today established themselves during the Cambrian explosion.
- astrobe_ 5mo agoSo "modern" is a synonym for "current" here, if one puts aside warnings about its decline due to human activity?
- stefs 5mo agounrelated: https://fossil-scm.org/ https://fossil-scm.org/
- pfdietz 5mo agoTwo YouTube channels for those interested in this sort of thing: https://www.youtube.com/@lifethroughtime1811 https://www.youtube.com/@lifethroughtime1811 https://www.youtube.com/@virtualseminarsinprecambri4856 https://www.youtube.com/@virtualseminarsinprecambri4856