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Dickinsonia fossil discovered in India turns out to be bee hive remnant.
JBkansas posted a topic in Fossil News
https://www.iflscience.com/-fossil-that-rewrote-indian-geologic-history-is-actually-a-very-recent-beehive-67370 Original Dickinsonia article: https://www.sciencedirect.com/science/article/abs/pii/S1342937X20303038 Tongue in cheek retraction: https://www.sciencedirect.com/science/article/abs/pii/S1342937X23000254- 4 replies
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Are sponges a major source of Neoproterozoic C30 steranes?
Oxytropidoceras posted a topic in Fossil News
Great virtual talk about using biomarkers to determine the presence of sponges in the Neoproterozoic. What are the major sources of Neoproterozoic C30 steranes? Gordon Love, University of California, Riverside Virtual Seminars in Precambrian Geology, December 2, 2022 In addition, starting at 53:30, Dr. Love presents very specific arguments about why the cholestane biomarker recovered from fossils of White Sea Dickinsonia fossils are Quaternary contaminates and are not in any way associated with them. If so, this renders the arguments about whether the cholestane biomarker indicates Dickinsonia is an animal rather moot. The original Fossil Forum post is: Dickinsonia steroids not unique to animals The original papers are: Bobrovskiy, I., Hope, J.M., Ivantsov, A., Nettersheim, B.J., Hallmann, C. and Brocks, J.J., 2018. Ancient steroids establish the Ediacaran fossil Dickinsonia as one of the earliest animals. Science, 361(6408), pp.1246-1249. and Retallack, G.J., 2022. Damaged Dickinsonia specimens provide clues to Ediacaran vendobiont biology. Plos one, 17(6), p.e0269638. More of Bobrovskiy’s papers More of Rettalack’s papers Yours, Paul H.-
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From the album: Invertebrates
Dickinsonia costata Sprigg, 1947 Ediacaran White Sea region, Zimnie Gory Arkhangelsk Russia- 1 comment
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The Famous Fossils Scientists Got Incredibly Wrong (Also ten coolest non-dinosaur fossils for 2021)
Oxytropidoceras posted a topic in Fossil News
The Famous Fossils Scientists Got Incredibly Wrong Michelle Starr, Science Alert, December 28, 2021 Also there is Ten coolest non-dinosaur fossils unearthed in 2021 By Harry Baker, Live Science, December 28, 2021 Yours, Paul H.-
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Hello, I'd like to share my most recently acquired fossil, a Dickinsonia costata from the White Sea. It's estimated to be a little over 550 million years old and is considered among the first animal macrofossils. I think an old stromatolite may be the next fossil item on my wishlist. What is the oldest fossil in your collection? Share it here
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Retallack, G.J., Matthews, N.A., Master, S., Khangar, R.G., Khan, M. 2021 Dickinsonia Discovered in India and Late Ediacaran Biogeography. Gondwana Research, 90:165-170 DOI: 10.1016/j.gr.2020.11.008
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References: Andrey Ivantsov et al.: Guidebook of the field paleontological excursion: Zimnie Gory - locality of the Vendian (Ediacaran) soft-bodied animals. link
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https://www.bbc.com/news/science-environment-45588213 http://www.abc.net.au/news/science/2018-09-21/fossil-fat-points-to-oldest-known-animal-on-earth/10264260
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Been some good invertebrate articles out there lately..... https://phys.org/news/2017-09-mysterious-ancient-creature-animal.html
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A while back I bought a small bag of fossils at a yard sale. It has taken me all this time to get them out and look at them carefully. I was told that they came from France, that the kids had collected them on holidays. There is a fairly rough ammonite (that I am learning/practicing to prep), an echinoid, what is possibly an echinoid spine and a non-descript rock. I gave myself a shock last night when I finally realised that it is not French at all and it is quite descript in the right light. Approximately 550 myo. I believe that it is from South Australia: Ediacaran, Dickinsonia. It measures 23mm across.
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