Oxytropidoceras Posted May 22, 2019 Share Posted May 22, 2019 How Did Life Arrive on Land? A Billion-Year-Old Fungus May Hold Clues A cache of microscopic fossils from the Arctic hints that fungi reached land long before plants. Carl Zimmer, New York Times, May 22, 2019 https://www.nytimes.com/2019/05/22/science/fungi-fossils-plants.html The paper is: Loron, C.C., Rainbird, R.H., Turner, E.C., Greenman, J.W. and Javaux, E.J., 2019. Organic-walled microfossils from the late Mesoproterozoic to early Neoproterozoic lower Shaler Supergroup (Arctic Canada): Diversity and biostratigraphic significance. Precambrian Research, 321, pp.349-374. https://www.researchgate.net/publication/329839018_Organic-walled_microfossils_from_the_late_Mesoproterozoic_to_early_Neoproterozoic_lower_Shaler_Supergroup_Arctic_Canada_Diversity_and_biostratigraphic_significance https://www.researchgate.net/profile/Corentin_Loron https://www.researchgate.net/profile/J_Wilder_Greenman https://www.sciencedirect.com/science/article/pii/S030192681830216X Yours, Paul H. 4 Link to comment Share on other sites More sharing options...
FossilDAWG Posted May 22, 2019 Share Posted May 22, 2019 Interesting. I wonder what they fed on, as fungi are not primary producers and rely on dead or alive organic material (especially plants) as a food source. Maybe bacterial biofilm? Don Link to comment Share on other sites More sharing options...
Auspex Posted May 22, 2019 Share Posted May 22, 2019 16 minutes ago, FossilDAWG said: Interesting. I wonder what they fed on, as fungi are not primary producers and rely on dead or alive organic material (especially plants) as a food source. Maybe bacterial biofilm? Most likely, though radiotrophic is a possibility, too. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
DPS Ammonite Posted May 22, 2019 Share Posted May 22, 2019 59 minutes ago, Auspex said: Most likely, though radiotrophic is a possibility, too. See this article from a Stanford student about radiotrophic fungi that use ionizing radiation as an energy source. http://large.stanford.edu/courses/2017/ph241/white-t2/ 4 My goal is to leave no stone or fossil unturned. See my Arizona Paleontology Guide link The best single resource for Arizona paleontology anywhere. Link to comment Share on other sites More sharing options...
Auspex Posted May 22, 2019 Share Posted May 22, 2019 1 hour ago, DPS Ammonite said: ... radiotrophic fungi that use ionizing radiation as an energy source. Since the high end of ultraviolet is an ionizing radiation, early lifeforms on the early Earth could have evolved to take advantage of it. An interesting thought experiment, in any case. "There has been an alarming increase in the number of things I know nothing about." - Ashleigh Ellwood Brilliant “Try to learn something about everything and everything about something.” - Thomas Henry Huxley >Paleontology is an evolving science. >May your wonders never cease! Link to comment Share on other sites More sharing options...
RandyB Posted May 23, 2019 Share Posted May 23, 2019 https://arstechnica.com/science/2019/05/billion-year-old-fossils-may-be-early-fungus/?amp=1 Link to comment Share on other sites More sharing options...
FossilDAWG Posted May 23, 2019 Share Posted May 23, 2019 This topic is already being discussed here. Lets keep the discussion in one thread. Don Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 23, 2019 Share Posted May 23, 2019 Topics merged. 1 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...
RandyB Posted May 23, 2019 Share Posted May 23, 2019 Thanks for the reroute @FossilDAWG Link to comment Share on other sites More sharing options...
FossilDAWG Posted May 23, 2019 Share Posted May 23, 2019 I think Tim (Fossildude19) did the merge as I was posting. Anyway, good end result with everything in one place. Don Link to comment Share on other sites More sharing options...
Wrangellian Posted May 24, 2019 Share Posted May 24, 2019 There is a fossil called Diskagma that is about 2.2byo and it's thought to be terrestrial, and resembles a type of fungus, but of course it's not clear what it really was. I need to find the paper on that one, but it could indicate that life on land goes back much further. Link to comment Share on other sites More sharing options...
piranha Posted May 24, 2019 Share Posted May 24, 2019 1 hour ago, Wrangellian said: There is a fossil called Diskagma that is about 2.2byo and it's thought to be terrestrial, and resembles a type of fungus, but of course it's not clear what it really was. I need to find the paper on that one, but it could indicate that life on land goes back much further. Retallack, G.J., Krull, E.S., Thackray, G.D., Parkinson, D. 2013 Problematic urn-shaped fossils from a Paleoproterozoic (2.2 Ga) paleosol in South Africa. Precambrian Research, 235:71-87 PDF LINK — Interview: Oregon Public Broadcasting Radio 1 Link to comment Share on other sites More sharing options...
Wrangellian Posted May 24, 2019 Share Posted May 24, 2019 That's the one, thanks Scott. I see there is mentioned/pictured an even older organism, Thucomyces, 2.8byo! Link to comment Share on other sites More sharing options...
Scylla Posted May 26, 2019 Share Posted May 26, 2019 Billion year old microfossil pushes back earliest chitin, earliest fungi, earliest terrestrial fossil. https://interestingengineering.com/billion-year-old-fossil-fungi-push-back-records-by-over-450-million-years 1 Link to comment Share on other sites More sharing options...
Fossildude19 Posted May 26, 2019 Share Posted May 26, 2019 Topics merged. 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...
Scylla Posted May 27, 2019 Share Posted May 27, 2019 5 hours ago, Scylla said: Billion year old microfossil pushes back earliest chitin, earliest fungi, earliest terrestrial fossil. https://interestingengineering.com/billion-year-old-fossil-fungi-push-back-records-by-over-450-million-years 3 hours ago, Fossildude19 said: Topics merged. My memory is slipping, I did see oxytropidoceras post earlier Link to comment Share on other sites More sharing options...
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