Scylla Posted October 12, 2019 Share Posted October 12, 2019 I think I am interpreting this correctly. Seems that this 2 B yo track is being interpreted as a slime mold trace on a paleosoil. https://m.phys.org/news/2019-10-ancient-fossils-reveal-fresh-clues.html 3 Link to comment Share on other sites More sharing options...
grandpa Posted October 12, 2019 Share Posted October 12, 2019 Scylla, thanks for the post and for all the "news" posts you provide to TFF. These are helpful in keeping us better informed on cutting edge research. 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted October 12, 2019 Share Posted October 12, 2019 Agreed! Thanks Gus! Tim - VETERAN SHALE SPLITTER VFOTM --- APRIL - 2015 __________________________________________________ "In every walk with nature one receives far more than he seeks." John Muir ~ ~ ~ ~ ><))))( *> About Me Link to comment Share on other sites More sharing options...
Mediospirifer Posted October 12, 2019 Share Posted October 12, 2019 Very cool article! I've always found slime molds fascinating. Interesting to learn that they've been around for 2 billion years! Link to comment Share on other sites More sharing options...
Wrangellian Posted October 12, 2019 Share Posted October 12, 2019 Interesting! If anyone can provide a link to the paper if it's available, I'd appreciate it, so I can pin down the age they're putting on these fossils and add it to my timescale. Currently all I see is "almost 2 billion years". Link to comment Share on other sites More sharing options...
piranha Posted October 12, 2019 Share Posted October 12, 2019 The age is approximate (ca) within a 200 million year range. Retallack, G.J., Mao, X. 2019 Paleoproterozoic (ca. 1.9 Ga) Megascopic life on land in Western Australia. Palaeogeography, Palaeoclimatology, Palaeoecology, 532(109266) Abstract: Controversial hairpin-shaped trace fossils (Myxomitodes stirlingensis) and discoid (Cyclomedusa davidi) fossils are here reinterpreted in a reassessment of sedimentology and paleosols of the 1.9 ± 0.1 Ga Stirling Range Formation of Western Australia. Bengtson, S., Rasmussen, B., Krapež, B. 2007 The Paleoproterozoic Megascopic Stirling Biota. Paleobiology, 33(3):351-381 Abstract: The 2.0–1.8-billion-year-old Stirling Range Formation in southwestern Australia preserves the deposits of a siliciclastic shoreline formed under the influence of storms, longshore currents, and tidal currents... ...The taxa Myxomitodes stirlingensis n. igen., n. isp., are introduced for these traces. The Stirling biota was roughly coeval with other presumed multicellular eukaryotes appearing after a long period of profound environmental changes involving a rise in ambient oxygen levels, similar to that which preceded the Cambrian explosion. 1 Link to comment Share on other sites More sharing options...
Wrangellian Posted October 13, 2019 Share Posted October 13, 2019 Thanks again, Scott. Link to comment Share on other sites More sharing options...
Scylla Posted October 17, 2019 Author Share Posted October 17, 2019 On 10/12/2019 at 11:44 AM, grandpa said: Scylla, thanks for the post and for all the "news" posts you provide to TFF. These are helpful in keeping us better informed on cutting edge research. Always happy to share! Link to comment Share on other sites More sharing options...
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