#eocene — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #eocene, aggregated by home.social.
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💁🏻♀️ TIL: 🦊🐋 #Indohyus was a #fox-sized, semi-aquatic mammal that lived in and around the coast of an island #India 49 to 45 million years ago.
#Fossil evidence, including a #skull accidentally broken in the lab in 2007, showed whale-like inner-ear #bones that placed it as the closest non-whale relative of all modern #whales. It gave rise to #Pakicetus and a chain of increasingly aquatic ancestors leading to today’s toothed and #baleen whales.
👉 https://www.discoverwildlife.com/prehistoric-life/indohyus
#evolution #paleontology #cetaceans #eocene #marine #biology #animals #wildlife #mammals #hippos #bluewhales #dogs #pigs
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Los crocodilios Kambara fueron antiguos mekosuquinos del Eoceno (54,6 MdA) que midieron hasta unos 3-4 m de longitud. Habrían coexistido en comunidades con varias especies distintas en llanuras de marea de lagunas costeras. Habría estado mejor adaptado a desplazarse en tierra que los cocodrilos modernos, pero también acecharía a sus presas desde el agua. 📷Ristevski, J. et al., 2023 #eoceno #eocene
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El Moeritherium fue un mamífero semiacuático del Eoceno tardío (37-35 MdA) relacionado con elefantes y manatíes, pero con el tamaño de un cerdo. Tenía dos pares de colmillos, como los elefantes, y caninos superiores. Habría habitado en zonas de los ríos con corrientes lentas y llenas de vegetación #eoceno #eocene
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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.
https://www.sciencedirect.com/science/article/pii/S0009254123005016
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🐴 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.
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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
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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.
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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 ChowdhuryIf 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
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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
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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 -
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
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🐂 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.
#BrontopsRobustus #Titanothere #TrailsideMusuem #Palaeontology #CitizenScience
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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
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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
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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
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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 -
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!
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Harpagolestes orientalis #sciart #eocene #harpagolestes #mesonychidae #mesonychia #mongolia #china #protitanotherium
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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
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#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.
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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
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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
