#cretaceous — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #cretaceous, aggregated by home.social.
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The #Cretaceous hothouse had atmospheric #CO₂ levels above 1,000 ppm, compared with 420 today, and temperatures up to 10℃ higher than today. It was caused by very fast-moving #tectonic plates, which increased CO₂ emissions. Tectonic plates slow down due to collisions, which leads to mountain building. The weathering of igneous rocks is very efficient in reducing atmospheric CO₂. Spreading olivine on beaches could absorb up to a trillion tonnes of CO₂ from the atmosphere https://www.sydney.edu.au/news-opinion/news/2022/05/26/how-plate-tectonics-have-maintained-earth-s--goldilocks--climate.html
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The #Cretaceous hothouse had atmospheric #CO₂ levels above 1,000 ppm, compared with 420 today, and temperatures up to 10℃ higher than today. It was caused by very fast-moving #tectonic plates, which increased CO₂ emissions. Tectonic plates slow down due to collisions, which leads to mountain building. The weathering of igneous rocks is very efficient in reducing atmospheric CO₂. Spreading olivine on beaches could absorb up to a trillion tonnes of CO₂ from the atmosphere https://www.sydney.edu.au/news-opinion/news/2022/05/26/how-plate-tectonics-have-maintained-earth-s--goldilocks--climate.html
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The #Cretaceous hothouse had atmospheric #CO₂ levels above 1,000 ppm, compared with 420 today, and temperatures up to 10℃ higher than today. It was caused by very fast-moving #tectonic plates, which increased CO₂ emissions. Tectonic plates slow down due to collisions, which leads to mountain building. The weathering of igneous rocks is very efficient in reducing atmospheric CO₂. Spreading olivine on beaches could absorb up to a trillion tonnes of CO₂ from the atmosphere https://www.sydney.edu.au/news-opinion/news/2022/05/26/how-plate-tectonics-have-maintained-earth-s--goldilocks--climate.html
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The #Cretaceous hothouse had atmospheric #CO₂ levels above 1,000 ppm, compared with 420 today, and temperatures up to 10℃ higher than today. It was caused by very fast-moving #tectonic plates, which increased CO₂ emissions. Tectonic plates slow down due to collisions, which leads to mountain building. The weathering of igneous rocks is very efficient in reducing atmospheric CO₂. Spreading olivine on beaches could absorb up to a trillion tonnes of CO₂ from the atmosphere https://www.sydney.edu.au/news-opinion/news/2022/05/26/how-plate-tectonics-have-maintained-earth-s--goldilocks--climate.html
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The #Cretaceous hothouse had atmospheric #CO₂ levels above 1,000 ppm, compared with 420 today, and temperatures up to 10℃ higher than today. It was caused by very fast-moving #tectonic plates, which increased CO₂ emissions. Tectonic plates slow down due to collisions, which leads to mountain building. The weathering of igneous rocks is very efficient in reducing atmospheric CO₂. Spreading olivine on beaches could absorb up to a trillion tonnes of CO₂ from the atmosphere https://www.sydney.edu.au/news-opinion/news/2022/05/26/how-plate-tectonics-have-maintained-earth-s--goldilocks--climate.html
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https://www.europesays.com/ie/471855/ Ancient Bite Marks Suggest Tyrannosaurs Were Not Just Hunters #ApexPredator #bite #Bone #Cretaceous #Dinosaur #Éire #feeding #fossil #IE #Ireland #JudithRiverFormation #Metatarsal #Montana #NorthAmerica #Scavenging #Science #Teeth #Tyrannosaur #Tyrannosauridae #Tyrannosaurini #UnitedStates
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https://www.europesays.com/ie/468244/ Study: Butterflies and Moths Have Reused Same Genetic Toolkit for 120 Million Years #Butterfly #Chetone #Coloration #ConvergentEvolution #Cretaceous #DNA #Éire #Evolution #Gene #Genome #Heliconius #IE #Ireland #Ithomiini #Lepidoptera #Mimicry #Moth #Science #SouthAmerica
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💁🏻♀️ ICYMI: 🦖🦴 Watch over 150 million years of #fossil evidence from around the world in this #data viz from the American Museum of Natural #History. You can see when and where #dinosaurs appeared on #Earth as the continents shifted from the Late Triassic onward.
#animals #birds #cretaceous #dataviz #fossils #informationdesign #jurassic #maps #nature #paleontology #pangea #science #spinosaurus #titanosaur #triassic #trex #tksst #video
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🦖🦴 Watch over 150 million years of #fossil evidence from around the world in this #data viz from the American Museum of Natural #History. You can see when and where #dinosaurs appeared on #Earth as the continents shifted from the Late Triassic onward.
#animals #birds #cretaceous #dataviz #fossils #informationdesign #jurassic #maps #nature #paleontology #pangea #science #spinosaurus #titanosaur #triassic #trex #tksst #video
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RE: https://mastodon.green/@plazi_species/116142939438774146
What #amber #fossils can tell us about the early evolution of animal groups. Authors Hong-Yu Li et al. (2023) discovered several new genera and new species of #Mantispoidea from mid-#Cretaceous #Kachin #amber (#Myanmar). The new finds come from the still existing taxa Berothidae, Rhachiberothidae, Dipteromantispidae and Mantispidae. In the mid-Cretaceous #Rhachiberothidae e.g. were much more abundant and thus such fundings offer more insights into early #evolutionaryscenarios.
© StefanFWirth
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Fossil Amber Preserves Ecological Interactions between Ancient Ants and Other Organisms
Fossils trapped in amber aren’t just beautiful, they may preserve real …
#Lithuania #LT #Europe #Europa #EU #amber #ant #Balticamber #Burmeseamber #Cretaceous #Crownant #Dominicanamber #Eocene #fossil #Hellant #Insect #Kachinamber #Lietuva #lithuania #Millipede #Mite #mosquito #naujienos #Oligocene #parasite #Parasiticwasp #Parasitism #snail #spider #Stemant #termite #wasp
https://www.europesays.com/2816229/ -
Fossil Amber Preserves Ecological Interactions between Ancient Ants and Other Organisms https://www.byteseu.com/1835542/ #amber #Ant #BalticAmber #BurmeseAmber #Cretaceous #CrownAnt #DominicanAmber #Eocene #Fossil #HellAnt #Insect #KachinAmber #Lithuania #Millipede #Mite #Mosquito #Oligocene #parasite #ParasiticWasp #Parasitism #snail #spider #StemAnt #Termite #Wasp
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https://www.europesays.com/ie/359805/ Fossil Amber Preserves Ecological Interactions between Ancient Ants and Other Organisms #amber #Ant #BalticAmber #BurmeseAmber #Cretaceous #CrownAnt #DominicanAmber #Éire #Eocene #fossil #HellAnt #IE #Insect #Ireland #KachinAmber #Lithuania #Millipede #Mite #Mosquito #Oligocene #Parasite #ParasiticWasp #Parasitism #Science #Snail #Spider #StemAnt #Termite #wasp
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Hongshanornis is a #genus of #ornithuromorph birds known from early #Cretaceous lake deposits of the #YixianFormation, #InnerMongolia, #China. The holotype specimen, recovered in 2005, is currently held by the Institute of Vertebrate Paleontology and Paleoanthropology in Beijing. It was found in the Jianshangou fossil beds, dated to 124.6 million years ago. Three additional specimens have been reported, though only one of those has been definitively identified as belonging to Hongshanornis.
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This is random, but if anyone here knows invertebrate paleontologists familiar with late Cretaceous ammonite anatomy, please let me know. #paleontology #palaeontology #cretaceous #ammonite #aptychus #aptychi
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This is random, but if anyone here knows invertebrate paleontologists familiar with late Cretaceous ammonite anatomy, please let me know. #paleontology #palaeontology #cretaceous #ammonite #aptychus #aptychi
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This is random, but if anyone here knows invertebrate paleontologists familiar with late Cretaceous ammonite anatomy, please let me know. #paleontology #palaeontology #cretaceous #ammonite #aptychus #aptychi
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This is random, but if anyone here knows invertebrate paleontologists familiar with late Cretaceous ammonite anatomy, please let me know. #paleontology #palaeontology #cretaceous #ammonite #aptychus #aptychi
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This is random, but if anyone here knows invertebrate paleontologists familiar with late Cretaceous ammonite anatomy, please let me know. #paleontology #palaeontology #cretaceous #ammonite #aptychus #aptychi
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#Ammonites survived #asteroid impact that killed off #dinosaurs https://phys.org/news/2026-01-ammonites-survived-asteroid-impact-dinosaurs.html
#Ammonite survival across the #Cretaceous–Paleogene boundary confirmed by new data from Denmark https://www.nature.com/articles/s41598-025-34479-1
"If these findings are correct, they solve one mystery but leave us with another. Previous research has suggested that ammonite populations may have hung on for up to 68,000 years after the impact. So if the impact itself didn't deliver a fatal blow, what exactly finished them off?"
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#Ammonites survived #asteroid impact that killed off #dinosaurs https://phys.org/news/2026-01-ammonites-survived-asteroid-impact-dinosaurs.html
#Ammonite survival across the #Cretaceous–Paleogene boundary confirmed by new data from Denmark https://www.nature.com/articles/s41598-025-34479-1
"If these findings are correct, they solve one mystery but leave us with another. Previous research has suggested that ammonite populations may have hung on for up to 68,000 years after the impact. So if the impact itself didn't deliver a fatal blow, what exactly finished them off?"
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#Ammonites survived #asteroid impact that killed off #dinosaurs https://phys.org/news/2026-01-ammonites-survived-asteroid-impact-dinosaurs.html
#Ammonite survival across the #Cretaceous–Paleogene boundary confirmed by new data from Denmark https://www.nature.com/articles/s41598-025-34479-1
"If these findings are correct, they solve one mystery but leave us with another. Previous research has suggested that ammonite populations may have hung on for up to 68,000 years after the impact. So if the impact itself didn't deliver a fatal blow, what exactly finished them off?"
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#Ammonites survived #asteroid impact that killed off #dinosaurs https://phys.org/news/2026-01-ammonites-survived-asteroid-impact-dinosaurs.html
#Ammonite survival across the #Cretaceous–Paleogene boundary confirmed by new data from Denmark https://www.nature.com/articles/s41598-025-34479-1
"If these findings are correct, they solve one mystery but leave us with another. Previous research has suggested that ammonite populations may have hung on for up to 68,000 years after the impact. So if the impact itself didn't deliver a fatal blow, what exactly finished them off?"
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In my new YouTube #video, I tell the #hypothetical story of a #Histiostomatidae #mite that lived its #lifehistory in the #dung heap of the #dinosaur #Edmontosaurus #annectens during the Late #Cretaceous. It developed #fungivorously within the dung and, when conditions deteriorated, was #transported by #flies to a new habitat (phoresis). All images and footage created with #AI assistance, except photos of free-living mites.
© #StefanFWirth 2025Video
https://youtu.be/gzv-TZmU5G4?si=zrTLfrC96k3KEGqrPics
© S.F. Wirth -
In my new YouTube #video, I tell the #hypothetical story of a #Histiostomatidae #mite that lived its #lifehistory in the #dung heap of the #dinosaur #Edmontosaurus #annectens during the Late #Cretaceous. It developed #fungivorously within the dung and, when conditions deteriorated, was #transported by #flies to a new habitat (phoresis). All images and footage created with #AI assistance, except photos of free-living mites.
© #StefanFWirth 2025Video
https://youtu.be/gzv-TZmU5G4?si=zrTLfrC96k3KEGqrPics
© S.F. Wirth -
In my new YouTube #video, I tell the #hypothetical story of a #Histiostomatidae #mite that lived its #lifehistory in the #dung heap of the #dinosaur #Edmontosaurus #annectens during the Late #Cretaceous. It developed #fungivorously within the dung and, when conditions deteriorated, was #transported by #flies to a new habitat (phoresis). All images and footage created with #AI assistance, except photos of free-living mites.
© #StefanFWirth 2025Video
https://youtu.be/gzv-TZmU5G4?si=zrTLfrC96k3KEGqrPics
© S.F. Wirth -
In my new YouTube #video, I tell the #hypothetical story of a #Histiostomatidae #mite that lived its #lifehistory in the #dung heap of the #dinosaur #Edmontosaurus #annectens during the Late #Cretaceous. It developed #fungivorously within the dung and, when conditions deteriorated, was #transported by #flies to a new habitat (phoresis). All images and footage created with #AI assistance, except photos of free-living mites.
© #StefanFWirth 2025Video
https://youtu.be/gzv-TZmU5G4?si=zrTLfrC96k3KEGqrPics
© S.F. Wirth -
In my new YouTube #video, I tell the #hypothetical story of a #Histiostomatidae #mite that lived its #lifehistory in the #dung heap of the #dinosaur #Edmontosaurus #annectens during the Late #Cretaceous. It developed #fungivorously within the dung and, when conditions deteriorated, was #transported by #flies to a new habitat (phoresis). All images and footage created with #AI assistance, except photos of free-living mites.
© #StefanFWirth 2025Video
https://youtu.be/gzv-TZmU5G4?si=zrTLfrC96k3KEGqrPics
© S.F. Wirth -
Earth’s 8th Continent Buried Under The Pacific Finally Mapped By Scientists [Zealandia / Te Riu-a-Māui - “Finally”? ~wink~]
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https://dailygalaxy.com/2025/10/earth-8th-continent-finally-mapped/ <-- shared (somewhat) technical article
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https://doi.org/10.1029/2023TC007961 <-- shared 2023 paper
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https://youtu.be/DDbc4K7bgnA?si=EZFmmPFybPLLyND7 <-- shared animation
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"KEY POINTS
• Basalts and pebbly to cobbly sandstones have been dredged from the Fairway Ridge, Coral Sea
• Dating of the rocks and interpretation of magnetic anomalies allow mapping of major geological units across North Zealandia
• This work completes offshore reconnaissance geological mapping of the entire 5 million square km Zealandia continent…”
#geology #doggerland #Zealandia #TeRiuaMaui #godwana #godwanaland #cretaceous #mapping #geologicmapping #spatialanalysis #model #modeling #NewZealand #SouthPacific #continent #sampling #sediment #dredging #petrography #geochemistry #isotope #analyses #research #cenozoic #intraplate #platetectonics #tectonics #eocene #remotesensing #geophysics #geomagnetism -
Proud to be on this publication in GCA by Barbora Krizova et al. We show #clumped #isotope reordering in #Cretaceous rudist bivalves is location-specific. Understanding burial history is essential for selecting shell material for #paleoclimate #reconstructions. https://www.sciencedirect.com/science/article/pii/S0016703725004193
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🐊 A special back-to-our-roots #Minnesota #FossilFriday 🐴🐟🐘🦥🐪Terminonaris robusta (originally classified as Teleorhinus). A partial snout of Terminonaris was excavated in 1969 at the Hill Annex Mine - the same site where the claw of a dromaeosaur was found in 2015.
The excerpt here was published in a 1983 issue of Minnesota Conservation Volunteer. Vintage paleoart by Ken Sander.
#Cretaceous #Crocodile #Terminonarusrobusta #Palaeontology #CitizenScience
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Check out our latest #preprint in which we use a combination of #clumped and #oxygen #isotope measurements to reconstruct extreme summer temperatures experienced by #fossil #rudist bivalves from the Late #Cretaceous in Oman. All feedback is welcome!
https://egusphere.copernicus.org/preprints/2025/egusphere-2025-2308/ -
A very cool study using #clumped #isotope measurements in #oyster shells from the Early #Cretaceous showing high and variable #seasonality in response to climate changes caused by atmospheric #CO2 shifts. #mollusk shells again demonstrated as useful climate archives!
https://www.science.org/doi/10.1126/sciadv.adr9417 -
#isotope enabled #climate #modelling brings reconstructions and models together more closely for the Late #Cretaceous, a warm period with high #greenhouse gas concentrations in the atmosphere (and dinosaurs!)
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2024PA005002 -
#idw Earth's Orbital Rhythms Link Timing of Giant #Eruptions and #ClimateChange
An international team of scientists has synchronized key #climate records from the #Atlantic and #Pacific Oceans to unravel the sequence of events during the last million years before the extinction of the #dinosaurs at the #Cretaceous/#Paleogene boundary. https://idw-online.de/en/news848593
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#WeekendReading: Rivas et al., on an Early #Cretaceous volcaniclastic–carbonate ramp in southern Chile. An interesting aperture into the Cretaceous temperate #carbonates (lots of #oysters) and their interactions in #volcanoes
I constantly find myself comparing and contrasting with these Late Cretaceous volcanic #atolls I worked on.
https://link.springer.com/article/10.1007/s10347-023-00669-4 -
#NewSpecies of Ornithomimidae #dinosaurs identified in Mexico https://phys.org/news/2025-02-genus-species-ornithomimidae-dinosaur-family.html
A long-handed new ornithomimid dinosaur from the #Campanian (Upper #Cretaceous) Cerro del Pueblo Formation, Coahuila, #Mexico: Claudia Inés Serrano-Brañas et al. https://www.sciencedirect.com/science/article/abs/pii/S0195667125000102
"it had long hands with a palm longer than its entire upper arm... their purpose was to allow the #dinosaur to reach into shrubs, trees or bushes to pull branches, twigs into its mouth"
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Tracing the #evolution of ferns' surprisingly sweet defense strategy https://phys.org/news/2024-05-evolution-ferns-sweet-defense-strategy.html
#ConvergentEvolution of fern nectaries facilitated independent recruitment of ant-bodyguards from flowering plants https://www.nature.com/articles/s41467-024-48646-x
"#ferns and flowering #plants independently evolved #nectaries, specialized structures that secrete sugary rewards to attract ant bodyguards, around the same time in the #Cretaceous period"
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New #Titanosaur Species Identified in Argentina https://www.sci.news/paleontology/titanomachya-gimenezi-12853.html
A new titanosaur from the La Colonia Formation (Campanian-#Maastrichtian), Chubut Province, #Argentina https://www.tandfonline.com/doi/full/10.1080/08912963.2024.2332997
"#Titanomachya gimenezi roamed our planet during the latest #Cretaceous period, around 66 million years ago. The ancient species was a member of a group of derived titanosaurian #sauropods called Lithostrotia and shared some features with the family Saltasauridae."
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#Ferrodraco was an #anhanguerid #pterosaur from #Australia that lived during the middle #Cretaceous. It was described with help from Adele Pentland, and its name translates to “iron dragon”.
Please feel free to favorite and comment if you want to see more like this!
#ornithocheirus #dinosaur #paleoart #cartoon #rubberhose #vintagecartoon #pterodactyl
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New #Cretaceous-Era #Titanosaur Species Discovered in Argentina https://www.sci.news/paleontology/inawentu-oslatus-12664.html
A rebbachisaurid-mimicking titanosaur and evidence of a Late Cretaceous faunal disturbance event in South-West #Gondwana https://www.sciencedirect.com/science/article/abs/pii/S0195667123002823
"A genus and species of rebbachisaurid-mimicking titanosaurian #sauropod that stretched over 15 m has been unearthed in #Patagonia, #Argentina."
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Meet #Bustingorrytitan shiva, New Gigantic #Titanosaur from #Argentina https://www.sci.news/paleontology/bustingorrytitan-shiva-12641.html
A new gigantic #titanosaurian #sauropod from the early Late #Cretaceous of #Patagonia https://www.app.pan.pl/article/item/app010862023.html
"Bustingorrytitan shiva has an estimated body mass of 67.3 metric tons, which makes it one of the largest #sauropod #dinosaurs ever recorded. Gigantic #titanosaurs were an important component of the Cretaceous dinosaur faunas of Patagonia, at least for almost 50 million years"
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New species of #mosasaur named for Norse #SeaSerpent https://phys.org/news/2023-10-species-mosasaur-norse-sea-serpent.html
#Jormungandr walhallaensis : a new mosasaurine from the Pierre Shale Formation (Middle #Campanian) of North Dakota https://digitallibrary.amnh.org/items/13b0485f-c73f-47f9-8d1d-0d4ab6aaedfb
"The specimen is estimated to be about 24 feet (7.3m) long, and in addition to flippers and a shark-like tail, it would have had 'angry eyebrows' caused by a bony ridge on the skull, and a slightly stumpy tail that would have been shorter than its body."
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#Paleontologists Uncover #NewSpecies of #Titanosaur in #Egypt https://www.sci.news/paleontology/igai-semkhu-12251.html
A new #titanosaurian (#Dinosauria: #Sauropoda) from the Upper #Cretaceous (Campanian) #Quseir Formation of the #Kharga Oasis, Egypt https://www.tandfonline.com/doi/full/10.1080/02724634.2023.2199810"Interestingly, all known #titanosaurians from #Campanian-#Maastrichtian deposits in northern #Africa and the then-conjoined #ArabianPeninsula were small to medium-sized for #sauropod #dinosaurs... The same is true for southern #Europe"
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Scientists identify #NewSpecies of #beetle that used extra-long #antennae to battle for mates, at the feet of #dinosaurs https://phys.org/news/2023-08-scientists-species-beetle-extra-long-antennae.html
Protoliota paleus sp. nov. (Coleoptera: Silvanidae) – new long antennae beetle in mid-#Cretaceous Burmese amber https://www.biotaxa.org/em/article/view/81751
"Although having such long antennae might have its drawbacks, like getting tangled in vegetation, those extended male antennae come in handy for finding mates as well as battling over them"
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El cangrejo Cretapsara athanata atrapado en ámbar hace 100 millones de años, en la revolución cangrejil del Cretácico, cuando se originaron el 80% de los grupos actuales de cangrejos. 📷Xiao Jia #ambar #amber #cretacico #cretaceous
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#NewSpecies of #Theropod #Dinosaur Identified in #InnerMongolia https://www.sci.news/paleontology/migmanychion-laiyang-11996.html
A new theropod dinosaur from the Lower #Cretaceous Longjiang Formation https://www.sciencedirect.com/science/article/pii/S0195667123001337
"phylogenetic analysis supports #Migmanychion laiyang as closely related to the bizarre #Fukuivenator paradoxus and places them closer to pennaraptorans than therizinosauroids."
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New fossil turtle paper! Using µCT on a Campanian baenid, we describe the morphological aspects of the inner ear and neuroanatomy that are largely unknown among baenids, including details of semicircular canals, digital endocast, and columella (stapes).
https://doi.org/10.1002/ar.25185
#fossil #paleontology #Campanian #Cretaceous -
#NewSpecies of #Colossosaur Identified in Argentina
https://www.sci.news/paleontology/chucarosaurus-diripienda-11629.htmlA new gigant #titanosaur (Dinosauria, #Sauropoda) from the Upper Cretaceous of Northwestern #Patagonia, #Argentina https://www.sciencedirect.com/science/article/abs/pii/S0195667123000150
#Titanosaurs were the most diverse and abundant terrestrial #herbivores in the Southern Hemisphere landmasses during the Late #Cretaceous. Their high diversity rivals that of the hadrosaurid and ceratopsid #ornithischians of northern hemisphere ecosystems at the same time.
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New #fossil was one of the largest #MarineTurtles ever https://phys.org/news/2022-11-fossil-largest-marine-turtles.html
A gigantic bizarre marine #turtle (#Testudines: #Chelonioidea) from the Middle #Campanian (Late #Cretaceous) of South-western Europe https://www.nature.com/articles/s41598-022-22619-w
#Leviathanochelys is the largest #MarineTurtle ever discovered in Europe, and one of the largest found worldwide. These findings indicate that #gigantism in marine turtles developed independently in different lineages in both North America and Europe.