#eocene — Public Fediverse posts

I am a bit annoyed that they didn't cite our paper on the Eocene carbon transfer by mass flows. I'm fairly sure at least one of the authors was aware of it.

#Eocene

https://www.sciencedirect.com/science/article/pii/S0009254123005016

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

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

North Atlantic #volcanic activity was a major driver of #climate change 56 million years ago https://phys.org/news/2023-08-north-atlantic-volcanic-major-driver.html

Tracing North #Atlantic #volcanism and seaway connectivity across the #PaleoceneEoceneThermalMaximum (#PETM) https://cp.copernicus.org/articles/19/1623/2023/

"The #Paleocene–#Eocene Thermal Maximum (PETM) is a period of #GlobalWarming that occurred ~56 million years ago, lasting approximately 200,000 years, when the #Earth experienced global surface #temperature elevations of ~5°C."

North Atlantic #volcanic activity was a major driver of #climate change 56 million years ago https://phys.org/news/2023-08-north-atlantic-volcanic-major-driver.html

Tracing North #Atlantic #volcanism and seaway connectivity across the #PaleoceneEoceneThermalMaximum (#PETM) https://cp.copernicus.org/articles/19/1623/2023/

"The #Paleocene–#Eocene Thermal Maximum (PETM) is a period of #GlobalWarming that occurred ~56 million years ago, lasting approximately 200,000 years, when the #Earth experienced global surface #temperature elevations of ~5°C."

North Atlantic #volcanic activity was a major driver of #climate change 56 million years ago https://phys.org/news/2023-08-north-atlantic-volcanic-major-driver.html

Tracing North #Atlantic #volcanism and seaway connectivity across the #PaleoceneEoceneThermalMaximum (#PETM) https://cp.copernicus.org/articles/19/1623/2023/

"The #Paleocene–#Eocene Thermal Maximum (PETM) is a period of #GlobalWarming that occurred ~56 million years ago, lasting approximately 200,000 years, when the #Earth experienced global surface #temperature elevations of ~5°C."

North Atlantic #volcanic activity was a major driver of #climate change 56 million years ago https://phys.org/news/2023-08-north-atlantic-volcanic-major-driver.html

Tracing North #Atlantic #volcanism and seaway connectivity across the #PaleoceneEoceneThermalMaximum (#PETM) https://cp.copernicus.org/articles/19/1623/2023/

"The #Paleocene–#Eocene Thermal Maximum (PETM) is a period of #GlobalWarming that occurred ~56 million years ago, lasting approximately 200,000 years, when the #Earth experienced global surface #temperature elevations of ~5°C."

North Atlantic #volcanic activity was a major driver of #climate change 56 million years ago https://phys.org/news/2023-08-north-atlantic-volcanic-major-driver.html

Tracing North #Atlantic #volcanism and seaway connectivity across the #PaleoceneEoceneThermalMaximum (#PETM) https://cp.copernicus.org/articles/19/1623/2023/

"The #Paleocene–#Eocene Thermal Maximum (PETM) is a period of #GlobalWarming that occurred ~56 million years ago, lasting approximately 200,000 years, when the #Earth experienced global surface #temperature elevations of ~5°C."

Earth’s 8th Continent Buried Under The Pacific Finally Mapped By Scientists [Zealandia / Te Riu-a-Māui - “Finally”? ~wink~]
--
https://dailygalaxy.com/2025/10/earth-8th-continent-finally-mapped/ <-- shared (somewhat) technical article
--
https://doi.org/10.1029/2023TC007961 <-- shared 2023 paper
--
https://youtu.be/DDbc4K7bgnA?si=EZFmmPFybPLLyND7 <-- shared animation
--
"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

Two #NewSpecies of ancient primates resembling #lemurs identified https://phys.org/news/2023-09-species-ancient-primates-resembling-lemurs.html

New specimens of middle Eocene omomyines (Primates, Omomyoidea) from the Uinta Basin of Utah and the Tornillo Basin of Texas, with clarification of the generic status of Ourayia, Mytonius, and Diablomomys https://www.sciencedirect.com/science/article/abs/pii/S0047248423001045

"#Fossil evidence from the #Tornillo Basin in W #Texas & #Uinta Basin in #Utah reveals two new species of #omomyids—a family of small-bodied early #primates from the #Eocene"

🐴 For #FossilFriday the Eocene “dawn horse” Protorohippus venticolus (cast), housed at the Utah Field House of Natural History in Vernal, UT.

The original specimen—now in a private collection—is about 33cm (13 in) tall at the shoulder. It is one of two known specimens from the Fossil Butte Member at Fossil Butte National Monument, Wyoming.

I’ll be posting more about North American equids in the Midwest the next few months.

#Eocene #equus #palaeontology #citizenscience

https://www.nps.gov/fobu/learn/nature/fossil-mammals.htm

El Campanile giganteum es el caracol marino, o de cualquier otro tipo, más grande que se conoce. Vivió en el Eoceno (56-34 MdA) y midió hasta 120 cm de longitud, en el límite de tamaño de los gastrópodos, pues su pie deja de ser eficiente con mucho peso o superficie. 🏛️Centro de Biodiversidad Naturalis 📷Ghedoghedo #eoceno #eocene

Another great fossil sorting session this Sunday! It was an unusually fishy afternoon with lots of centra, scales, teeth, and fin rays from several different species being found, among the usual collection of teeth and bone fragments.

Our next session will be Sunday, Nov. 23 at MRU in Calgary. Everyone is welcome, so come on by!

https://albertapaleo.org/events/fossilsorting for more information.

#palaeontology #paleontology #fossils #microfossils #eocene

Another great Sunday sorting fossils! It was a spectacular haul with a surprising number of partial jaw fragments found this time.

Rodent molar - CS Ling
Reptile Jaw - Daegan Kovacs
Phalanx - Labib Chowdhury

If you'd like to come assist palaeontological research, our next session is this Sunday! https://albertapaleo.org/events/fossilsorting for more information.

#paleontology #paleontology #fossils #microfossils #alberta #eocene

⏰New paper⏰

Very excited to share our more recent paper published today in @nature Communications, where we show based on #clumped #isotope measurements in a giant sea #snail 🐚 that Europe experienced a monsoon-like climate during the #Eocene high-CO2 period.

https://www.nature.com/articles/s41467-025-64241-0

The calcaneum (ankle bone) of a rodent from the Eocence Cypress Hills formation, Saskatchewan! This tiny bone is about 50 million years old and was found by one of our volunteers during a fossil sorting session.

If you'd like to get a chance to find your own fossil, our first session of the year is this Sunday!

https://albertapaleo.org/events/fossilsorting for more information.

#palaeontology #paleontology #fossilfriday #fossil #eocene #rodent #saskatchewan #alberta

El Arsinoitherium fue un mamífero del Eoceno tardío al Oligoceno temprano (36-27 MdA) con dos grandes y gruesos cuernos sobre la nariz y otro par pequeño sobre los ojos. Aunque tiene unas dimensiones similares al rinoceronte blanco, y recuerda a él, es un penungulado próximo a los elefantes, mientras los rinocerontes son perisodáctilos relacionados con los caballos y tapires. Además, sus cuernos son de hueso. #eoceno #eocene #oligoceno #oligocene

🐂 It’s a #Eocene #FossilFriday! 🐂 🐴🐘🦥🐪 This beautiful Megacerops skull is on display at the Trailside Museum in Crawford, Nebraska.

Megacerops upper molars feature a diagnostic W-shaped outer shearing surface, adapted for slicing through leaves and other plant material.

The Trailside Museum also houses the famous “Clash of the Mammoths” exhibit.

https://trailside.unl.edu/

#BrontopsRobustus #Titanothere #TrailsideMusuem #Palaeontology #CitizenScience

El Gyaclavator kohlsi fue una chinche de encaje (Tingidae) de finales del Eoceno temprano. Los machos, que son los que se han conservado, tienen un distiflagelómero (la porción distal de la antena) más grueso que podría haber usado para competir con otros machos o cortejar a las hembras. 📷Wrappler, 2015 #eoceno #eocene

Durante la primera mitad del Eoceno (56-34 MdA), el Dasornis emuinus sobrevolaba los mares. Era un ave acuática con una envergadura de 5-6 metros relacionada con los pelícanos o los patos. Sus colmillos son realmente prolongaciones óseas. 📷Ludger Bollen #eoceno #eocene

El Poebrotherium era el antepasado de los camélidos, el primero con un aspecto que recuerda a las especies modernas, pero con el tamaño de una oveja. Entonces no estaba especializado ni en su hábitat, viviendo en llanuras, valles y bosques, ni en su alimentación, con una vida más similar a las gacelas. 📷Jonathan Chen #eoceno #eocene #mioceno #miocene

My 25 years of palaeoart chronology...

The 2022 Korean translation of Locked in Time (by Dr Dean Lomax & published by Columbia University Press) commissioned me to colourise my 50 greyscale illustrations. "Their Last Embrace" shows two Allaeochelys turtles copulating to their death in a toxic Eocene Messel Lake.

#Art #Painting #PaleoArt #PalaeoArt #SciArt #SciComm #DigitalArt #Illustration #Dinosaurs #Reptiles #Palaeontology #Paleontology #Messel #Eocene #Turtles

The John Day Fossil Beds National Monument (JODA) preserves a fantastic record of Oregon's #Eocene and #Oligocene environments. A new study examines several JODA trackways to further understand fauna and their behaviors in these changing ecosystems.

Image: Figure 2 from the paper. Digital elevation model (DEM) of avian tracks from JODA 1536. Scale bar equals ~20mm.

Authors: Conner J Bennett, Nicholas A Famoso, and Daniel I Hembree

Full #OpenAccess Paper:
https://doi.org/10.26879/1413

Insects in amber, a #paleo classic! A new paper reports the first reliable fossil record of butterflies in #Eocene Baltic amber. This uniquely patterned egg resembles those of modern admiral butterflies, suggesting that their relatives are at least 35 million years old.

Image: Figure 2 from the paper. A close-up of the hexagonal surface sculpturing of the egg inclusion. Scale bar equals 0.5mm.

Authors: Thilo C Fischer and Axel Hausmann

Full #OpenAccess Paper:
https://doi.org/10.26879/1407

Encontrar fósiles puede ser más difícil que encontrar una aguja en un pajar si son tan pequeños como el Teilhardina brandti, un tití norteamericano de comienzos del Eoceno (56-47 mda). En la imagen, dos falanges del dedo. 📷Kristen Grace #eoceno #eocene #fosiles #fossils

And now for something a little bit different - its not always easy to identify fossils - so I present to you a little bit of Eocene 'something'. Potentially a seed pod? I am open to opinions!

#fossils #fossil #FossilFriday #paleontology #eocene

Harpagolestes orientalis #sciart #eocene #harpagolestes #mesonychidae #mesonychia #mongolia #china #protitanotherium

Un nemátodo Heydenius brownii emerge del hemíptero aquílido AchilidaeFulgoroidea (Achilidae), pero no lo hace a tiempo. Conservado en ámbar báltico, se convierte en un ejemplo de paleoendoparasitismo y nos ayuda a imaginar en qué entorno vivían, especialmente cuando se ha encontrado en latitudes altas. 📷 Stefan Heim #parasitos #parasites #eoceno #eocene

#WeekendReading: Vermeulen et al., with some numerical experiments aimed to understand what is needed to initiate an expanding ice sheet over #Antarctica during the later #Eocene (with way too many non-disambiguated abbreviations)
https://cp.copernicus.org/articles/21/95/2025/

Hello! Here is a stick for you wonderful people out there on the Fediverse.

One thing, it is 50 million years old, but hopefully you won't mind.

#fossil #fossils #eocene

Thanks to everyone who came out to help us sort Eocene microfossils - it was our largest turnout yet!

Our next event will be Sunday, January 26 from 1 - 3:30pm at Mount Royal University, Calgary, AB, Rm. B140. Everyone is welcome to come help find fossils!

See albertapaleo.org/events for more details.

#palaeontology #paleontology #microfossils #ab #alberta #yyc #eocene

There were #penguins in the equator in the Paleogene! The notion the penguins initiated in the #Paleocene is itself a big mind-bending for me (given how #warm things were), but them hanging out in the equatorial #Eocene is just...
https://www.pnas.org/doi/abs/10.1073/pnas.0611099104

Durante unos 30 millones de años, entre el Eoceno y el Mioceno, en Sudamérica, vivía el Barinasuchus arveloi, el mayor sebécido, familia perteneciente a los crocodiliformes, con unos 6 metros de longitud. Era un carnívoro temible, pesando más de tonelada y media, por lo que podía consumir cualquier tipo de presa a su alcance.📷Julio Lacerda #eoceno #eocene #mioceno #miocene

Back in the day, I was taught that the opening of the Drake Passage in the late #Eocene led to #Antarctica being isolated which initiated rapid global #cooling. But we are seeing more data coming in, which suggests it was a much more gradual process. The connection had to get deep enough, abstractions needed to get out of the way and only then did the #ocean gyres linked up.
https://jm.copernicus.org/articles/43/497/2024/

Mysterious plant #fossil belongs to a family that no longer exists https://phys.org/news/2024-12-mysterious-fossil-family-longer.html

Othniophyton elongatum, an #extinct angiosperm of possible caryophyllalean affinity from the #Eocene https://academic.oup.com/aob/advance-article-abstract/doi/10.1093/aob/mcae196/7888709

"The fossil's berries ruled out families like the grasses and magnolias. The flowers did resemble some modern groups, but other features ruled those out, too. Even with such a pristine fossil in their repertoire, researchers were left with more questions than before"

#WeekendReading: Behrooz et al. on water column #deoxygenation and #euxinia (inc. surface waters) at the Paleocene #Eocene Thermal Maximum.
https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2023PA004828

New rule: anyone using the term Middle #Eocene without explaining (using ISC-recognized internation stages or absolute ages) - gets automatically rejected.

Professor Helps Discover Global Gap In Geologic Record
--
https://phys.org/news/2024-10-professor-global-gap-geologic.html <-- shared technical article
--
https://doi.org/10.1016/j.earscirev.2024.104912 <-- shared paper
--
#geology #sedimentation #sediment #offshore #coast #coastal #model #modeling #sealevel #erosion #weathering #continentalshelf #geologichistory #submarine #unconformity #pelagic #marine #continentalmargin #sedimentology #siliciclastic #icehousetransition #eocene #oligocene #slope #basinfloor #submarinecanyon #masswasting #debrisflow

Discovery of 48-million-year-old #DaddyLonglegs with their iridescent, metallic appearance intact
https://phys.org/news/2024-06-discovery-million-year-daddy-longlegs.html

Iridescent #harvestmen from the #Eocene of #Messel, Germany https://phys.org/news/2024-06-discovery-million-year-daddy-longlegs.html

"The metallic appearance is probably due to so-called #StructuralColors, where the surface of the animal's cuticle reflects light in such a way that they have a shiny appearance, even 48 million years later. This has never been seen in #fossil harvestmen before."

So, 6 hours on Barton beach, and these are the ~40 million year old sand tiger shark teeth I collected. The first image is of the teeth with little weathering, and the second adds those in poorer condition. I’ve thoroughly enjoyed today, exhausted now though 😅

I have to remind myself that, in terms of the span of time, these shark lived closer to the dinosaurs than to us.

#fossils #FossilHunting #Eocene #SharkTeeth #DeepTime #geology

Study shows that Rio Grande Rise was once a giant mineral-rich tropical island near Brazil
https://phys.org/news/2024-02-rio-grande-giant-mineral-rich.html

Red clays indicate sub-aerial exposure of the #RioGrandeRise during the #Eocene volcanic episode https://www.nature.com/articles/s41598-023-46273-y

"#RioGrande Rise, a possibly continental basaltic plateau and chain of #seamounts now #submerged in the South #Atlantic #Ocean some 1,200 km from the coast of #Brazil, was once a giant tropical island, rich in #minerals and covered with vegetation."

#Eocene-Period #Trogon Already Had Heterodactyl Feet
https://www.sci.news/paleontology/eotrogon-stenorhynchus-11898.html

Narrow-beaked #trogons from the early Eocene London Clay of Walton-on-the-Naze (Essex, UK) https://link.springer.com/article/10.1007/s10336-023-02071-x

Trogons are the only group of #birds with a heterodactyl foot, in which the second toe is permanently reversed.

Two #NewSpecies of ancient primates resembling #lemurs identified https://phys.org/news/2023-09-species-ancient-primates-resembling-lemurs.html

New specimens of middle Eocene omomyines (Primates, Omomyoidea) from the Uinta Basin of Utah and the Tornillo Basin of Texas, with clarification of the generic status of Ourayia, Mytonius, and Diablomomys https://www.sciencedirect.com/science/article/abs/pii/S0047248423001045

"#Fossil evidence from the #Tornillo Basin in W #Texas & #Uinta Basin in #Utah reveals two new species of #omomyids—a family of small-bodied early #primates from the #Eocene"

Two #NewSpecies of ancient primates resembling #lemurs identified https://phys.org/news/2023-09-species-ancient-primates-resembling-lemurs.html

New specimens of middle Eocene omomyines (Primates, Omomyoidea) from the Uinta Basin of Utah and the Tornillo Basin of Texas, with clarification of the generic status of Ourayia, Mytonius, and Diablomomys https://www.sciencedirect.com/science/article/abs/pii/S0047248423001045

"#Fossil evidence from the #Tornillo Basin in W #Texas & #Uinta Basin in #Utah reveals two new species of #omomyids—a family of small-bodied early #primates from the #Eocene"

Two #NewSpecies of ancient primates resembling #lemurs identified https://phys.org/news/2023-09-species-ancient-primates-resembling-lemurs.html

New specimens of middle Eocene omomyines (Primates, Omomyoidea) from the Uinta Basin of Utah and the Tornillo Basin of Texas, with clarification of the generic status of Ourayia, Mytonius, and Diablomomys https://www.sciencedirect.com/science/article/abs/pii/S0047248423001045

"#Fossil evidence from the #Tornillo Basin in W #Texas & #Uinta Basin in #Utah reveals two new species of #omomyids—a family of small-bodied early #primates from the #Eocene"

Two #NewSpecies of ancient primates resembling #lemurs identified https://phys.org/news/2023-09-species-ancient-primates-resembling-lemurs.html

New specimens of middle Eocene omomyines (Primates, Omomyoidea) from the Uinta Basin of Utah and the Tornillo Basin of Texas, with clarification of the generic status of Ourayia, Mytonius, and Diablomomys https://www.sciencedirect.com/science/article/abs/pii/S0047248423001045

"#Fossil evidence from the #Tornillo Basin in W #Texas & #Uinta Basin in #Utah reveals two new species of #omomyids—a family of small-bodied early #primates from the #Eocene"

56 Million-Year-Old Eocene Global Warming May Indicate A Wetter Future
--
https://phys.org/news/2023-06-million-year-old-eocene-global-wetter-future.html <-- shared technical article
--
https://dx.doi.org/10.1029/2022PA004542 <-- shared paper
--
#GIS #spatial #mapping #modeling #model #climatechange #data #climatemodeling #Eocene #global #DeepMIP #wetanddry #water #hydrology #rainfall #precipitation #projections #hydroclimate #subtropics #spatialanalysis #spatiotemporal #future #experience #events #globalwarming #extremeweather #seasonality #ecosystems

Earth’s 8th Continent Buried Under The Pacific Finally Mapped By Scientists [Zealandia / Te Riu-a-Māui - “Finally”? ~wink~]
--
https://dailygalaxy.com/2025/10/earth-8th-continent-finally-mapped/ <-- shared (somewhat) technical article
--
https://doi.org/10.1029/2023TC007961 <-- shared 2023 paper
--
https://youtu.be/DDbc4K7bgnA?si=EZFmmPFybPLLyND7 <-- shared animation
--
"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

Earth’s 8th Continent Buried Under The Pacific Finally Mapped By Scientists [Zealandia / Te Riu-a-Māui - “Finally”? ~wink~]
--
https://dailygalaxy.com/2025/10/earth-8th-continent-finally-mapped/ <-- shared (somewhat) technical article
--
https://doi.org/10.1029/2023TC007961 <-- shared 2023 paper
--
https://youtu.be/DDbc4K7bgnA?si=EZFmmPFybPLLyND7 <-- shared animation
--
"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