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Showing results for tags 'ediacaran'.
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Unusual late-Ediacaran Fossil from China Solves Paleontological Paradox
Oxytropidoceras posted a topic in Fossil News
“I’ve Never Seen Anything Like It Before” – Unusual 550 Million Year Old Fossil Solves Paleontological Paradox, Virgina tech, June 12, 2024 The paywalled paper is: Wang, X., Liu, A.G., Chen, Z., Wu, C., Liu, Y., Wan, B., Pang, K., Zhou, C., Yuan, X. and Xiao, S., 2024. A late-Ediacaran crown-group sponge animal. Nature, pp.1-7, Published: 05 June 2024 Yours, Paul H.-
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- aspiculate
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A Pteridinium fossil my friend sent me from Stanly County, North Carolina. I plan to get it micro-CT scanned and hopefully publish something on it.
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- Ediacaran
- ediacaran biota
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If one assumes that the Ediacaran lasted from 635 MYA until 538.8 MYA then I have a number of ediacaran fossils that have little to no identification. Any comments or suggestions from Forum members would be greatly appreciated. The first image is the front of an ediacaran fossil from Guizho, China. This specimen is constructed of a relatively fragile high sand content shale. Most notable is the spaghetti like fossil that could be compressed fronds, tubes or perhaps even some type of mold; I have seen nothing like it on the internet. The top of this image depicts a crescent moon shaped fossil and the portion of the lower left may or may not reflect abrasion. The second image is of the back of the Guizhou specimen depicted in image 1. The top of this image depicts another more detailed crescent moon shaped fossil illustrating fine "hairs" on the periphery. There are small less featured fossils in the lower portion of this image. It is possible that the crescent shaped fossils are among the petalonamae. Images 3, 4 and 5 are closeups of the fossils depicted in images 1 and 2. Image number 6 is of Nemiana simplex fossils from the ediacaran in Mulgilw, Ukraine. When I first acquired this specimen it was thought to be a jellyfish attached to the sediment. More recently it has been proposed that it is the result of algae. Any further information would be appreciated. Image 7 is of Prota-medusae fossils from 550 MYA that were found in Gadsden, Alabama. I was pleased to see that such soft bodied creatures were preserved in the fossil record. Comments, suggestions, and corrections are welcome.
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From the album: Fossil Collection: DC Area and Beyond
Beltanelliformis brunsae Khmelnytskyi Oblast, Ukraine Studenytsia Formation Ediacaran -
From the album: Fossil Collection: DC Area and Beyond
Harlaniella Khmelnytskyi Oblast, Ukraine Studenytsia Formation Ediacaran -
From the album: Fossil Collection: DC Area and Beyond
Vendotaenia antiqua Khmelnytskyi Oblast, Ukraine Studenytsia Formation Ediacaran -
A rangeomorph holdfast trace fossil from the Ediacara formation, Rawnsley quartzite of the Flinders Range, South Australia. This specimen is Medusina mawsoni, so called because it was until recently thought to be a jellyfish, but is now believed to be the attachment point of a fractal rangeomorph as Charniodiscus is the point of anchorage for Charnia sp. This one may have been the holdfast point for some species of Rangea. The diameter of the outer circle is 1.5 cm and the fossil is estimated to be 555 million years old.
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- achlysopsis
- acorn worm
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Fossil discovery in Upper Island Cove, Newfoundland, features specimens that are 'completely new to science' SaltWire Network, Newfoundland, June 9, 2023 An open access paper is: Narbonne, G.M., Laflamme, M., Greentree, C. and Trusler, P., 2009. Reconstructing a lost world: Ediacaran rangeomorphs from Spaniard's Bay, Newfoundland. Journal of Paleontology, 83(4), pp.503-523. Yours, Paul H.
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- conception group
- ediacaran
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Scottish palaeontology in the 21st century Tom Challands, Edinburgh Geological Society Lectures Edinburgh Geological Society Lectures Yorus, Paul H.
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I recently visited the New Walk Museum in Leicester, specifically to see their Ediacaran fossils from Charnwood. Firstly, the famous Charnia masoni type specimen. This was significant as it was one of the first fossils to be described from Precambrian rocks. They had several type specimens, including this Charniodiscus concentricus type specimen. Sorry, this photo came out quite badly, but on the left is the Cyclomedusa cliffi type specimen. This is the Pseudovendia charnwoodensis type specimen As well as a discoid fossil. They also had a large cast of some other fossils of Charnwood, I think this is a more recent addition to their display. This is Auroralumina, a cnidarian and the current oldest known predator. Unfortunately there was no information about this, not even a sign to note it as Auroralumina. Bradgatia. A cast of Charnia masoni. And lastly another disc. Aside from Ediacaran fossils, they also have Mesozoic fossils from Leicestershire and Rutland, but I will save these for another time.
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Below is a wonderful lecture about the Ediacaran Avalon biota. The Ediacaran Avalon biota: New insights from old fossils Alex G. Liu, University of Cambridge, September 16, 2021 This lecture is a part of Virtual Seminars in Precambrian Geology List of Publications Yorus, Paul H.
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Does it look like a Kimberella fossil negative, or is it something else?
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Hellooooo i traveled 2 and a half hours to a Ediacaran deposit of sandstone and mudstone(600 million years old) near Madinah in Saudi Arabia. I found what I think is wave ripples, is that true? I also found some sort of imprint fossil showing perfect bumps, I don’t think erosion can create a pattern like that since there weren’t any others like it that I saw. if this is a fossil it is definitely the oldest fossil I am ever going to find since it is Precambrian. thank you so much for your time and effort!!!
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- 600million years old
- desert
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Origin of metazoans as recorded by small carbonaceous fossils - 2022 open access review paper
Oxytropidoceras posted a topic in Fossil News
The comprehensive, open access review paper is: Slater, B.J. and Bohlin, M.S., 2022. Animal origins: The record from organic microfossils. Earth-Science Reviews, 232, no. 104107. open access review paper A related video. Possible sponge fossils in the Tonian of northwestern Canada, Elizabeth Turner, Laurentian University, Virtual Seminars in Precambrian Geology Turner's open access paper is: Turner, E.C., 2021. Possible poriferan body fossils in early Neoproterozoic microbial reefs. Nature, 596(7870), pp.87-91. Yours, Paul H.-
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- cambrian
- cryogenian
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Hello, I see these pieces being sold as apparent precambrian Ediacarans from Guizhou, China. My question is, how does one determine if these are even fossils and biological in origin as opposed to just some random smudge or geological oddity? Is anything known about these sorts of specimens? Thank you.
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"A crown-group cnidarian from the Ediacaran of Charnwood Forest, UK"
FranzBernhard posted a topic in Fossil News
Link to BBC News: Auroralumina attenboroughii Link to paper: Auroralumina attenboroughii Franz Bernhard- 3 replies
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- charnwood forest
- cnidarian
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Firstly, I am NOT an artist and will never claim to be one! I always have and will refer to my “art” as doodles. I draw these on my IPhone with my finger… that is by definition a doodle! Secondly, I recently realized that there is very little art for a vast majority of Ediacaran Biota. So, I want to eventually give them all their time to shine, even if it’s just doodles with some artistic liberties. This is just for fun after all. My first is Anfesta. I’m not 100% finished but I wanted to share anyways! Cheers!
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Hi everyone, This fossil has always bothered me because of the way it felt in terms of weight and the cleanliness of the cut (there looks to have been some stabilizer added from the side, which I guess helps the case for authenticity). I only have one other fossil - what appears to be what was a very commonly sold Nemiana simplex - from a nearby region with a similar geology, and I could very well be wrong because it is indeed quite similar, albeit lighter with a more uniform grain. Since they're both Ediacaran in age and commercially not rare per se, I've always wondered if this Kimberella was legit given a fluctuating price tag that has been quite high in the past but seems to have levelled out in the mid range. As someone who once taught a diversity of life course, I am an absolute sucker for fossil items that include key moments in history, as well as evolutionary transitions. I've included pictures of the Kimberella in question, as well as a couple of items I place it next to because I'm a giant nerd and I like to imagine that this is the footprint left by some sort of mono- or poly-placophoran ("chitons") 600 million years ago. I wish I had some "smell shelly fauna" or traces left by an Aplacophoran to illustrate the molluscan "root" but alas this is it for now. The orange fossil shell is of a monoplacophoran named Proplina grandis (Gasconade formation, Missouri, Lower Ordovician) - unconcerned about its provenance - and a modern chiton from the Philippines. I know for a fact this quite popular seller misidentified a fossil fish sold to me as a madagascan coelacanth very, very early in my building of a fossil collection; this is also a reason I'd like to know if the provenance is legitimate; I've been hesitant to deal with them since and passed on many fossils as a result I'd probably only look to add a sea pen-like fossil from the region - unlikely due to the hefty price tag and commercial rarity - but I'd like to learn more about what to look out for nonetheless. As always, thanks for any insights the community might be able to provide! Cheers Marcus p.s. And happy fathers day!
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- ediacaran
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Found this fossil in an agate of unknown age from a gravel pit ...
SilurianSalamander posted a topic in Fossil ID
I think it looks shockingly similar to charnia. Maybe a cephalopod, snail, or plant? What could it be?
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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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- arkhangelsk
- dickinsonia
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From the BBC : https://www.bbc.com/travel/article/20220419-australias-trail-where-life-began
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- ediacaran
- flinders trail.
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Ecology of the enigmatic Ediacaran pentaradial eukaryote Arkarua adami
Oxytropidoceras posted a topic in Fossil News
555 myo fossils reveal early Arkarua feeding habits An international team of researchers has shed light on the feeding mode of Pentaradial Arkarua, strange, alien-like creature. By Annemarie Gaskin, University of Adelaide. University of Adelaide Newsroom, cosmos, April 6, 2021 The open access paper is: Cracknell, K., García-Bellido, D.C., Gehling, J.G. et al. Pentaradial eukaryote suggests expansion of suspension feeding in White Sea-aged Ediacaran communities. Scientific Reports 11, 4121 (2021). https://doi.org/10.1038/s41598-021-83452-1 Yours, Paul H.-
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- arkarua
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So I recently acquired this little Ediacaran fossil. The round convex blobs have been identified as Beltanelliformis/Nemiana, but I'm not so sure about the flat one in image 3. Is this just a flattened specimen of the same genus? Or is this something else (e.g. a holdfast? muscular structures?)? The small bump/dimple in the center, along with the circular(ish) rings are of interest. Location: Podolia, Ukraine
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Hello everyone, I came across this fossil on one of the auction sites - unfortunately the seller knows nothing about its age or even the country of origin. He sent me the following pictures, which however are not very sharp :(( Nevertheless, does it look like anything Ediacaran to you? The size is 17,5 x 12,5 x 2 cm. The guy says it's shale rock. What do you think? I will appreciate your comments :) Kasia
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Fungi might have lived on land earlier than thought. Tiny pyritized fossils over 600 million years old http://www.sci-news.com/paleontology/ediacaran-fungi-09298.html
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- china
- colonize land
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