![]() “The body fossils of the animals that made these traces, however, have not yet been found. “These trace fossils represent some of the earliest known evidence for animal appendages and extend the earliest trace fossil record of animals with appendages from the Early Cambrian to the Late Ediacaran period,” the paleontologists said. ![]() They were probably made by millimeter-sized bilaterian animals with paired appendages that raised the animal body above the water-sediment interface. The trackways are somewhat irregular, consisting of two rows of imprints that are arranged in series or repeated groups. These trace fossils include burrows and trackways that are preserved in close proximity and are apparently connected. Chen and co-authors studied trace fossils from the Ediacaran Shibantan Member (551-541 million years old) of the Dengying Formation in the Yangtze Gorges area, China. “Until our discovery, however, no fossil record of animal appendages had been found in the Ediacaran.”ĭr. “They are often assumed to have appeared and radiated suddenly during the ‘Cambrian explosion,’ about 541-510 million years ago, although it has long been suspected that their evolutionary ancestry was rooted in the Ediacaran period (635-541 million years ago).” Zhe Chen from the Nanjing Institute of Geology and Palaeontology and colleagues. “ Bilaterian animals, such as arthropods and annelids, have paired appendages, and are among the most diverse animals today and in the geological past,” said co-lead author Dr. Image credit: Chen et al, doi: 10.1126/sciadv.aao6691. Not actual, you know, THINGS.Trackways and burrows excavated in situ from the Shibantan Member, Dengying Formation, China: (A and B) epirelief (top bedding surface) and hyporelief (bottom bedding surface), respectively trackways (TW1 and TW2) and undermat burrows (UB1 to UB3) are labeled (C) latex mold of (B), with trackways and burrows marked and labeled (D) enlargement of rectangle in (B), showing connection between TW2 and UB3 (marked). And the things he was talking about "breaking" were morals and emotional connections. It had nothing to do with facts, it was an analogy. I find that quote to be bullshit written by a literary scholar. What about all the people that died for us to learn how to save people alive today? Did we leave the path of wisdom now that we have the powers of biblical jesus? We can return sight to the blind and help people who can't walk or talk do both, but in the process many things were broken. What about a doctor that "breaks" a patient's body before replacing an organ with a transplant? HAve they left the path of wisdom if they "fix" what they "broke"? Have I left the path of wisdom because I broke a 'speak and spell' when I was a kid and now I can build my own out of an arduino+3d printer? If you want a piece of content that belongs to you to be removed from /r/interestingasfuck then please file a copyright notice here.ĭoes that meet the criteria of my question?īut I've broken plenty of electronics and now I can fix almost anything I own when it breaks. Please mark spoilers like this: >!text here!< Click/tap to read. Reposting as a very new account might get you bannedĪll posts by new users require mod approval in order to weed out spammers. We require new users to post original content, not lazy reposts. Serial reposters may be filtered or banned.Įstablished accounts will get escalating bans if they willfully ignore the posting rules Reposts of images on the front page, or within the set limit of /r/interestingasfuck/top, will be removed more> Any racism, bigotry, or any other kind of hate speech is strictly prohibited and will result in a ban. No self-promotion, bots or any kind of spam. No personal information, doxing, witch hunt, brigading, or any subreddit-related meta-drama. ![]() Titles must be descriptive and directly related to the content more> A place to share (almost) anything and everything interesting as fuck.
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