#ediacaran — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #ediacaran, aggregated by home.social.
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Why did Dickinsonia cross the mat?
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#Fossils reveal many complex #animals existed before the #CambrianExplosion
More than 539 million years ago, from the #Ediacaran Period, soft, clarinet-shaped animals anchored themselves to the seafloor on disc-shaped bases, swaying alongside stalked animals resembling worms and baskets. These woodwindlike creatures are just a few of those coming to life from a treasure trove of newly discovered fossils in southwestern #China.
https://www.sciencenews.org/article/fossils-complex-early-animals-diversity
https://archive.ph/sgnuC -
My 25 years of palaeoart chronology...
A few more zooms with species labels from my 2024 Mistaken Point Ediacaran landscape reconstruction, created with Dr Duncan McIlroy and his team at Memorial University, Newfoundland. Featured are #Beothukis #Fractofusus #Arborea #Charnia #Charniodiscus #Ivesheadiomorph #Primocandelabrum #Bradgatia #Thectardis #Lydonia, sea anemone, and microbial mats.
#SciArt #SciComm #PaleoArt #PalaeoArt #Fossils #Ediacaran #Newfoundland #MistakenPoint
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My 25 years of palaeoart chronology...
Here's my 2024 Mistaken Point Ediacaran landscape reconstruction, created with Dr Duncan McIlroy and his team at Memorial University, Newfoundland. Featured are #Beothukis #Fractofusus #Arborea #Charnia #Charniodiscus #Ivesheadiomorph #Primocandelabrum #Bradgatia #Thectardis #Lydonia, sea anemone, & microbial mats.
#SciArt #SciComm #PaleoArt #PalaeoArt #Fossils #FossilFriday #Ediacaran #Ediacara #Newfoundland #MistakenPoint
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My 25 years of palaeoart chronology...
Here's my 2024 Mistaken Point Ediacaran landscape reconstruction, created with Dr Duncan McIlroy and his team at Memorial University, Newfoundland. Featured are #Beothukis #Fractofusus #Arborea #Charnia #Charniodiscus #Ivesheadiomorph #Primocandelabrum #Bradgatia #Thectardis #Lydonia, sea anemone, & microbial mats.
#Painting #PaleoArt #SciArt #SciComm #DigitalArt #Illustration #MarineReptiles #Palaeontology #Paleontology #Fossils #FossilFriday #Ediacaran
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*Were they spectacularly colorful, one wonders. Eyes hadn't evolved yet #Ediacaran
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@KateShaw has made a new episode, featuring goblet-shaped Diskagma of the Paleoproterozoic, and Horodyskia of the Mesoproterozoic and Neoproterozoic.
https://strangeanimalspodcast.blubrry.net/2025/08/04/episode-444-diskagma-and-horodyskia/
#fossils
#preCambrian
#proterozoic
#Paleoproterozoic
#Mesoproterozoic
#Neoproterozoic
#Ediacaran -
Hace 555 millones de años, en el Ediacárico, vivió la Kimberella quadrata, una extraña criatura de aguas someras de clasificación incierta, pero que pudo ser la antepasada de los moluscos. 📷Nobu Tamura #mollusca #ediacarico #ediacaran
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Oh, AI -- is there anything you can't screw up? On the left, supposedly a picture of Ediacaran animal(?) Dicksonia costata, while on the right we have what they actually look like.
From the truly dreadful an*malsaroundth*gl*be.com, wot I just came across. Censored to prevent any possible automated cataloguing of the place.
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Oh, AI -- is there anything you can't screw up? On the left, supposedly a picture of Ediacaran animal(?) Dicksonia costata, while on the right we have what they actually look like.
From the truly dreadful an*malsaroundth*gl*be.com, wot I just came across. Censored to prevent any possible automated cataloguing of the place.
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Oh, AI -- is there anything you can't screw up? On the left, supposedly a picture of Ediacaran animal(?) Dicksonia costata, while on the right we have what they actually look like.
From the truly dreadful an*malsaroundth*gl*be.com, wot I just came across. Censored to prevent any possible automated cataloguing of the place.
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Oh, AI -- is there anything you can't screw up? On the left, supposedly a picture of Ediacaran animal(?) Dicksonia costata, while on the right we have what they actually look like.
From the truly dreadful an*malsaroundth*gl*be.com, wot I just came across. Censored to prevent any possible automated cataloguing of the place.
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Oh, AI -- is there anything you can't screw up? On the left, supposedly picture of Ediacaran animal(?) Dicksonia costata, while on the right we have what they actually look like.
From the truly dreadful an*malsaroundth*gl*be.com, wot I just came across. Censored to prevent any possible automated cataloguing of the place.
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PBS Eons - How Animals Got Butts
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My 25 years of palaeoart chronology...
A few photos from the day I spent filming at Mistaken Point, Newfoundland, in 2018. The crew were there to film the Ediacaran fossils and talk to the palaeontologists at Monument University Newfoundland.
#Art #Painting #PaleoArt #PalaeoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Birds #Reptiles #Palaeontology #Paleontology #Ediacaran #Ediacara
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Scientists discover one of the Earth's earliest #animals in Australian outback
https://phys.org/news/2024-10-scientists-earth-earliest-animals-australian.htmlA new motile #animal with implications for the #evolution of axial polarity from the #Ediacaran of South #Australia https://onlinelibrary.wiley.com/doi/10.1111/ede.12491
"Quaestio simpsonorum is the first animal to show a definitive left-right asymmetry... The animal is a little smaller than the size of your palm and has a question-mark shape in the middle of its body that distinguishes between the left and right side"
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New on 'Stuff': Book Review - Life on a Young Planet #⭐️⭐️⭐️⭐️ #book-review #english #archaeology #astrobiology #mass-extinction #geology #biology #science #cambrian #ediacaran https://stuff.graves.cl/posts/2024-08-28_19_59-book-review-life-on-a-young-planet.html
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Ediacaran (Geological periods 🌍)
The Ediacaran is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period at 635 Mya to the beginning of the Cambrian Period at 538.8 Mya. It is the last period of the Proterozoic Eon as well as the last of the so-called "Precambrian supereon", before the beginning of the subsequent Cambrian P...
https://en.wikipedia.org/wiki/Ediacaran
#Ediacaran #Neoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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My 25 years of palaeoart chronology...
In 2013 I built 23 scale and life-size models for MUSE Science Museum, in Trento, Italy. Here's Kimberella, from the Ediacaran.
#Art #Painting #PaleoArt #PalaeoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Birds #Reptiles #Palaeontology #Paleontology #Ediacaran #Kimberella #JurassicWorld
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They don't know what the single trident-shaped tooth is for?
OBVIOUSLY- it's for pokety-pokety. Sheesh! Scientific American needs more editorial help from THIS citizen-scientist.
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Ediacaran (Geological periods 🌍)
The Ediacaran is a geological period of the Neoproterozoic Era that spans 96 million years from the end of the Cryogenian Period at 635 Mya to the beginning of the Cambrian Period at 538.8 Mya. It is the last period of the Proterozoic Eon as well as the last of the so-called "Precambrian supereon", before the beginning of the subsequent Cambrian P...
https://en.wikipedia.org/wiki/Ediacaran
#Ediacaran #Neoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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'Missing' sea #sponges discovered https://www.cam.ac.uk/research/news/missing-sea-sponges-discovered
A late-#Ediacaran crown-group sponge animal https://www.nature.com/articles/s41586-024-07520-y
"No problem dating them back 700 million years. Yet convincing sponge #fossils only go back about 540 million years, leaving a 160-million-year gap in the fossil record... now researchers have reported a 550-million-year-old sea sponge from the 'lost years' and proposed that the earliest sea sponges had not yet developed mineral skeletons"
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Team discovers 'missing' sea sponges https://phys.org/news/2024-06-geobiologist-team-sea-sponges.html
A late-#Ediacaran crown-group sponge animal https://www.nature.com/articles/s41586-024-07520-y
"Molecular clock estimates indicate that #sponges must have evolved about 700 million years ago. And yet there had been no convincing sponge #fossils found in rocks that old."
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A Magnetic Low May Have Paved the Way for Complex Life https://eos.org/articles/a-magnetic-low-may-have-paved-the-way-for-complex-life
Near-collapse of the #GeomagneticField may have contributed to atmospheric oxygenation and #animal radiation in the #Ediacaran Period https://www.nature.com/articles/s43247-024-01360-4
"the planet’s magnetic field was at a record low—around 30 times lower than today—for 26 million years starting around 565 million years ago. Such a drastic dip in magnetic field intensity could have had massive implications"
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The study on Marine Life Evolution suggests that a weaker magnetic field in Earth’s past may have been a catalyst for significant changes in marine life during the Ediacaran Period. This finding links geophysical events with biological evolution and offers insights into the conditions that may foster life on other planets.
#Evolution #GeoMagentism #Ediacaran
https://www.sciencenews.org/article/weaker-magnetic-field-marine-life-big
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Earth's earliest sea #animals drove #evolution by stirring the water
https://phys.org/news/2024-05-earth-earliest-sea-creatures-drove.html#Ediacaran marine animal forests and the ventilation of the oceans: Susana Gutarra et al. https://www.cell.com/current-biology/fulltext/S0960-9822(24)00533-5
"one of the most important Ediacaran organisms for disrupting the flow of water was the cabbage-shaped #Bradgatia... they might have been capable of enhancing local oxygen concentrations... making other areas of the sea floor more habitable"
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2-MAY-2024
Evolution: Weak magnetic field may have supported diversification of life on Earth -
Ediacaran (Geological periods 🌍)
The Ediacaran is a geological period of the Neoproterozoic era that spans 96 million years from the end of the Cryogenian period at 635 Mya to the beginning of the Cambrian period at 538.8 Mya. It is the last period of the Proterozoic eon as well as the last of the so-called "Precambrian supereon", before the beginning of the subsequent Cambrian p...
https://en.wikipedia.org/wiki/Ediacaran
#Ediacaran #Neoproterozoic #GeologicalPeriods #ProterozoicGeochronology
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Key moment in the #evolution of life on Earth captured in fossils
https://phys.org/news/2024-01-key-moment-evolution-life-earth.htmlU–Pb zircon–rutile dating of the Llangynog Inlier, #Wales: constraints on an #Ediacaran shallow-marine #fossil assemblage from East Avalonia https://www.lyellcollection.org/doi/full/10.1144/jgs2023-081
"to determine the age of the #fossils, researchers used #volcanic ash layers like bookmarks in the geological sequence"
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Kuckaraukia (Organisms 🐞)
Kuckaraukia is a genus of enigmatic Ediacaran organisms known from fossil casts of a disc-shaped biogenic structure interpreted as bifoliate, with a structured bottom layer and a less resistant top layer. It is unknown if the fossils represent single animals or a colonial organism of some kind. == References...
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#Ediacaran #fossils reveal origins of #biomineralization that led to expansion of life on Earth
https://phys.org/news/2023-09-ediacaran-fossils-reveal-biomineralization-expansion.htmlConstraining the onset and environmental setting of #metazoan biomineralization https://www.sciencedirect.com/science/article/pii/S0012821X23003497
"#Cloudina originated in a low #oxygen environment with periods of notably higher #oxygenation... it was not a case of sustained oxygenation that resulted in the appearance of #skeletonization... high #carbonate concentrations in the ocean were necessary"
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The #glacier went that-a-way
The #striations on this face of the #Ediacaran (ca. 560 Ma) #Squantum Member of the #Roxbury #Conglomerate were probably left by the #Pleistocene #Laurentide ice sheet, which retreated ca. 12 ka. The striations have the right orientation, from northwest to southeast.
The Squantum Member was once interpreted as a (#glacial) #tillite. The most common contemporary model is a peri-#Gondwana #debrite (#turbidite).
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#mollusk evolution hot take:
I'm gonna guess that #Kimberella, the mobile whooping cushion of the #Ediacaran seafloor, was not a mollusk but probably closely ancestral to mollusks. (or at least closely related to something ancestral to mollusk)
It's kind of snail-like and probably had a lick-ey tongue, but it doesn't look like it has the crunchy shell that the original mollusk was projected to have, and I guess the tongue was not quite snail like.
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#Namibia 🇳🇦 has yielded many #fossils of #Ediacarans, ~600 million year old #organisms that shed light on the early #evolution of #animals. One iconic #Ediacaran, #Rangea, was first described from Namibia, where a few #specimens are preserved in #3D, giving an idea of what this #ancient #enigma might have looked like when alive.
Photo from Vickers-Rich et al., 2013 (co-authored by members of the #Namibian #Geological Survey)
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#FossilAdventCalendar Day 4
The oddest and - at over 560 million years in age - oldest #fossil featured in this #AdventCalendar is Fractofusus misrai from #Newfoundland 🇨🇦. This specimen in the #RoyalOntarioMuseum is from #MistakenPoint, one of the sites preserving the #Ediacaran #biota, the term for some of our planet's oldest #multicellular #fossils. Lots of questions remain about these ancient enigmas, among them, were #Ediacarans #animals or members of a different branch of the tree of life?
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World’s oldest meal helps unravel mystery of our earliest animal ancestors https://reporter.anu.edu.au/all-stories/worlds-oldest-meal-helps-unravel-mystery-of-our-earliest-animal-ancestors
Guts, gut contents, and feeding strategies of #Ediacaran animals https://www.cell.com/current-biology/pdfExtended/S0960-9822(22)01699-2
By examining the molecular remains of what the #animals ate, the researchers were able to confirm the slug-like organism, known as #Kimberella, had a mouth and a gut and digested food the same way modern animals do. It was likely one of the most advanced creatures of the Ediacarans.
