Geologist interested in the energy transition, bicycling, and public service
https://bio.link/timdemko
https://orcid.org/0000-0002-9125-0907
https://www.semanticscholar.org/author/Timothy-Michael-Demko/15743754
Tim Demko
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Me and @trishughes21.bsky.social explode the Cambrian. Now on YouTube youtu.be/fDFmoZRWw6s
Upper cheek teeth of Kolpochoerus from 750,000 years ago in Kenya (featuring paleoart of this species by @adamfitch.bsky.social)
#FossilFriday doubleheader from our lab: #1: descriptive study of a beautiful skull of the early diverging sabertooth cat Adelphailurus. Lead by @narimanechatar.bsky.social doi.org/10.1080/0272...
American Mineralogist:
Hydrothermal rutile as a recorder of fluid evolution and W mineralization: Insights from the Northern Baoshan Block, China
Xiaobo Si, et al.
Rutile is an effective carrier for W, preventing its loss in F- and B-rich magmatic-hydrothermal systems.
doi.org/10.2138/am-2...
www.nationthailand.com/news/general...
I got a new preprint out talking about the impact of heatwaves (and warming in general) on the sediment biogeochemistry of temperate estuaries. Short version: it may contribute to eutrophication. 🧪
Link: https://egusphere.copernicus.org/preprints/2026/egusphere-2026-3235/
Since there's a lot of love for all things algal right now...
A chunk of Jurassic stromatolite, a structure formed by repeated layers of sediment and microbial mats (often cyanobacteria), making a blobby hummock.
These guys have been doing their thing for 3.5 billion years.
#FossilFriday
⚒️🌍🟢🔬🧪
Temporal and Spatial Changes in Seismic Attenuation Associated with Inferred Fluid Migration in the 2016 Central Apennines Earthquake Sequence #BSSA ⚒️
New research suggests that seismic attenuation monitoring may reveal evolving crustal conditions during complex sequences.
buff.ly/UJp2ZLR
Um novo dinossauro com penas do Cretáceo Inicial do norte da China ilumina a complexidade da evolução dos penarraptores primitivos e comentários sobre várias questões conceituais e metodológicas relevantes www.vertpala.ac.cn/EN/10.19615/...
The largest trilobite ever found: Isotelus rex.
This specimen is 72 cm long.
I finally saw it! 😀
Photographed today at the Manitoba Museum in Winnipeg.
#Trilobite #Fossil #Paleontology #Evolution #ManitobaMuseum
Adelphailurus kansensis is a puma-sized felid, originally described from fragmentary material in the Edson Quarry (Kansas, Mio-Pliocene). Here, we describe a nearly complete cranium from the Wikieu...
Thailand’s Department of Mineral Resources is examining a large carnivorous dinosaur fossil found in Sakon Nakhon, believed to be around 130 million years old.
