#eukaryote — Public Fediverse posts

M.M. Sandin et al. (preprint, 2025) "inferred a timeline of #eukaryoteevolution using molecular clock and birth-death diversification models". They used a "#dataset of 75,975 non-redundant...#taxonomicunits and 77 well-supported fossil calibrations" and reconstructed an #evolutionary #diversification of #eukaryote #crowngroup representatives in the Proterozoic (ca. 2.5 billion to 541 million y. ago).
StefanFWirth

Ref
https://doi.org/10.64898/2025.12.12.693929

Fig
M.M.Sandin et al.(2025), http://creativecommons.org/licenses/by-nc-nd/4.0/

‘We’re All Asgardians’ a talk on the origins of Eukaryotes (us) with implications for our present-day immune systems by Brett Baker, University of Texas, Austin. Dr. Baker inaugurated the EPS Wares Distinguished Public Lecture series.

Eukaryotic cells are most closely related to the 'Hod' branch of the Asgard branch of the Archaea.

#Eukaryote #Archaea #Evolution #UTAustin #McGillIUniversity #EarthSystemScience #WaresLecture

In 1925, Édouard Chatton distinguished prokaryote from eukaryote cell types. #Poetry #Science #History #Biology #Prokaryote #Eukaryote #Chatton (https://sharpgiving.com/thebookofscience/items/p1925e.html)

In 1925, Édouard Chatton distinguished prokaryote from eukaryote cell types. #Poetry #Science #History #Biology #Prokaryote #Eukaryote #Chatton (https://sharpgiving.com/thebookofscience/items/p1925e.html)

Earth's Billion-Year Balancing Act
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https://phys.org/news/2024-02-earth-billion-year.html <-- shared technical article
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https://doi.org/10.1130/GSATG423C.1 <-- shared paper
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#geology #geologichistory #BoringBillion #BalancedBillion #earth #earthhistory #life #lifeonearth #atmosphere #oxygenation #structuralgeology #tectonics #complexlife #eukaryote #platetectonics #crust #mantle #core

"..the oldest #eukaryote-bearing units already show species richness levels similar to those of the much younger & more heavily sampled Tonian period..these oldest eukaryotic assemblages show significant morphological disparity, particularly in #vesicle construction. These high levels of..species richness & morphological disparity suggest that although late Palaeoproterozoic units preserve our oldest record of #eukaryotes, the eukaryotic clade has a much deeper #history"

https://onlinelibrary.wiley.com/doi/full/10.1002/spp2.1538

When was the first time life began to prey on each other? https://phys.org/news/2022-12-life-began-prey.html

A case for an active #eukaryotic marine #biosphere during the #Proterozoic era: Lisa Eckford-Soper et al. https://www.pnas.org/doi/abs/10.1073/pnas.2122042119

"We use a size- & trait-based ecosystem model to show that the #microfossil record is most compatible with an active #eukaryote #ecosystem conducting #osmotrophy, #photosynthesis, #phagotrophy. Marine #ecosystems 1,700-780 Ma were far more active, diverse than generally thought."

Cellular Landcape

https://gaelmcgill.artstation.com/projects/Pm0JL1

https://www.cellsignal.com/pathways/cellular-landscapes

Cell Signaling Technology

https://www.digizyme.com/cst_landscapes.html

#cell signaling #eukaryote #mitochondria #transcription #Golgi #cytoskeleton #adhesion #protein synthesis