Creative approach using birth-death mathematical theory in exploring so called "super-progenitor" species. New support for the prevalence of the budding speciation and the 'polytomies-as-signal interpretation'. doi.org/10.1017/pab.... 🧪 #Geology ⚒️ #Paleobio

"diversity peaked before a sharp decline, suggesting a possible link between ecological specialization and extinction risk..aligns with hypotheses proposing that overspecialization limits adaptability, leading to extinction under background conditions" doi.org/10.1017/pab.... 🧪 #Geology ⚒️ #Paleobio

Biology student Edgar Žigis created and now has a significantly updated information application "Paleontologas". Please download it!😃Available in English, Lithuanian, Russian, French, Spanish, Italian, Portuguese (Brazilian dialect), German and Slovenian play.google.com/store/apps/d... 🧪⚒️ #Paleobio

Sediments and minerals self-organize and create a range of patterns which can be difficult to distinguish from biologically fabricated structures. This review brings significant advancement in understanding the deep time biospheres on Earth and elsewhere. arxiv.org/abs/2601.00323 🧪 ⚒️ #Paleobio

Views on my birthtown of Švenčionys (Pol. Święciany) on the New Year's Eve. It was founded and built in a U-shaped valley which formed during the penultimate glaciation around 150 Ka BP, when a tongue of a giant glacier melted away...

Kevin, is that you?

Congratulations to @nilese.bsky.social for the publication by the @paleosoc.bsky.social's journal Paleobiology of the 50th anniversary punctuated equilibrium symposium organized by Don Prothero & held at the 2022 GSA meeting. @bruceslieberman.bsky.social @andrejpaleo.bsky.social

Geologizing biology. Faults over folds.

The New Year, here in Vilnius, will be white and full of snow! *My son Konstantinas in the playground.

I love Christmas Carols. And what could be better than Christmas Carol melodies by macroevolutionary @nilese.bsky.social ? 😃 www.youtube.com/watch?v=vqDo...

BTW, 122°F is 50°C 😅 so, yes, early Eocene inland temperatures were really high 🧪 #Geology ⚒️ #Paleobio

I'll admit I don't usually worry about whether my fitness functions are Lipschitz or merely α-Hölder, but a really nice idea here (I've only skimmed it) is that extreme ruggedness ⟹ loss of Lipschitz continuity ⟹ diff. eq. solns can be non-unique because no more Picard-Lindelöf ⟹ contingency Cool!

Egg-stealing dinosaurs (Manipulonyx) were a thing in the Mesozoic. Unique combinations of resources enable unique niches and unique body plans. www.zin.ru/journals/tru... 🧪 #Geology #Paleobio #EvoBio

A great article (which I was lucky reviewing) which shows the importance of our assumptions on the geometric properties of fitness landscapes. Non-Lipschitz continuous dynamics and punctuated evolution. link.springer.com/article/10.1... 🧪 #Geology #Paleobio #EvoBio

Merry Christmas!

The perimeter of the Baltoscandian ice sheet was banded by a giant sand belt, something of the "frozen Sahara". We still have in Lithuania and Poland, now overgrown by pine forests, huge northern dune fields... www.sciencedirect.com/science/arti... kirj.ee/earth-public... 🧪 #Geology ⚒️

Interesting article on the evolution of views of Stephen Jay Gould in relation to punctuated equilibria. www.cambridge.org/core/journal... 🧪 #Paleobio #EvoBio

I really love the sense of landscapes of the #PrehistoricPlanetIceAge and how this megafauna is placed there. During glacial maxima, continental interiors (except southern North America) were much drier, colder and harsher - almost Mars but with oxygen. 🧪 #Geology ⚒️ #Paleobio

Sometimes archeological and fossil records preserve incredible evidence of past interactions: human who lived in what is now Bulgaria, was attacked by the European lion, survived, and was cared for. www.sciencedirect.com/science/arti... 🧪 #Geology ⚒️ #Paleobio #Archeology

Complex causes of the "the first" mass extinction from the point of view of graptolites: "Thus, the LOME involved intense species selection and the wholesale alteration of the clade diversity structure of a major element of the zooplankton." doi.org/10.1017/9781... 🧪 #Geology #Paleobio #EvoBio

Popular in Lithuania science books. Did you recognized yours? 😉

Mamamlian spatio-temporal synchronization: "identified two Balkanatolian island-hopping routes across the Western Neotethys potentially enabling the dispersal of small-bodied Asian primates, rodents and artiodactyls to Afro-Arabia." www.sciencedirect.com/science/arti... 🧪 #Geology #Paleobio #EvoBio

Another new @egubg.bsky.social highlight paper for @climatecerege.bsky.social, with my colleague @lucbeaufort.bsky.social! A foram- and coccolith-based story led by the former @unibremen.bsky.social @marumunibremen.bsky.social PhD student Pauline Cornuault: doi.org/10.5194/bg-2... 🧪 ⚒️ 🌊 👩‍🔬 #PaleoSky

Cool to see conodonts as "legal" vertebrates on the European Association of Vertebrate Palaeontologists 2026 conference logo! 😃 Thank you @darjadankina.bsky.social 😅 eavp2026.weebly.com/about.html 🧪 #Geology #Paleobio #EvoBio

#InkTober2025 Day 17: Ornate. A Palaeoloxodon for today, just realized that’s the third elephant species I have drawn this InkTober. Think it’s clear what my favorites are ;) Brushpen, Copic and white pastel pencil. #inkdrawing

Ecotypes: stable attractors or interrupted continuous phenotypic gradients? 🤔 www.cell.com/trends/ecolo... 🧪 #EvoBio #Paleobio

Whaat? Tetrapods were apparently absent from a fourth of a supercontinent for tens of Ma?? "Diverse assemblages of Carboniferous and Permian tetrapods ... in eastern Pangaea (east of the Ural seaway)...only become abundant from the mid-Permian onwards." doi.org/10.1016/j.ea... 🧪 #Geology #Paleobio

Cool study and talk at #Palass25 with significant ramifications for punctuated dynamics of clade diversification and the inference of macroevolutionary patterns from molecular data. 🧪 #Geology #Macroecology #Paleobio #EvoBio

Great talk by Arindam Roy at the #PalAss25 #conference about explainable AI pipeline for the automatic CT scan 3D reconstructions. First big steps on freeing paleontologist from labor intensive specimen reconstruction toward the work on higher level questions.

This study deserves it's own meme www.nature.com/articles/s41... 🧪 #Paleobio #Climate

Starting my journey to the #PalAss25 #conference . A new bar at the Vilnius Airport -- 'uppercrust' -- that's where most of the fossil record resides 😅

Cool study - now we can have glimpses of coloration of non-feathered dinosaurs too. archive.is/VsIZe 🧪 #Paleobio

Save dates for this excellent interdisciplinary meeting 👇 🧪 #Ecology #Macroecology #Paleobio #EvoBio

Ice age - doesn't mean that only warm-blooded and cold-resistant mammals and birds prowled the world. Many places around the equator were hot and humid. On the opposite, Carboniferous period usually imagined as the warm-humid, actually was a a time of a severe ice age. 🧪⚒️ #Geology #Paleobio

"...enhance models, highlighting opportunities such as incorporating time-varying connections, adaptive topologies, and multilayer structures to better represent the temporal dynamics and multilevel interactions characteristic of biological systems." www.sciencedirect.com/science/arti... 🧪 #EvoBio

Glad to share our new article which is dedicated to the stratigraphy and paleoenvironments (facies)of the Ludfordian (late Silurian) in relation to the largest carbon isotopic excursion of the Phanerozoic — Lau Extinction Event 1/5 www.geology.cz/bulletin/ful... 🧪 #Geology #Macroecology #Paleobio

Why does every decade promise a method, a language, or now #AI that will “fix” #software #complexity? Software never behaved like an engineered artifact. Our research shows it evolves like an #ecosystem. A thread ↓

Cuts to geology programmes, departmental mergers and shrinking university support threaten the long-term health of the discipline. Now, Jan Zalasiewicz examines the developing situation at the University of Leicester: geoscientist.online/sections/vie... #Geology #Geoscience #HigherEducation

A great summary on the dire situation for Geology/Palaeontology at @uniofleicester.bsky.social by Jan Zalasiewicz. Please sign and share the petition: www.change.org/p/save-geolo...

Long-range travels is an important factor in the geodispersal of vertebrates, modulating ever present force of the Geo-Red Queen, while merging individual geobiomes. [For the further context you can read: www.nature.com/articles/s41... and doi.org/10.1017/pab.... ] 🧪 #EvoBio #Paleobio

Isn't that crazy -- there was a dog breed which was solely dedicated for powering wheels which turned meat on fire!? Just how many kinds of such 'techno-animals' existed and went extinct? This is cultural and biological evolution all at once. 🧪 #EvoBio #Paleobio

I am pleased to announce that from Jan 1 2026 I take over as Editor-in-Chief of the journal Biological Theory. My first act, with the support of the editorial team, is to bring the journal to BlueSky from X. Please follow us @biologicaltheory.bsky.social. We will be posting about all our articles.

📣 Hey PalAss participants! The 2025 Annual Meeting in Portsmouth is getting closer 🦕📍 Just a quick reminder: If you’re tagging us on social media, don’t forget to use our official hashtag #PalAss25 🙌✨ Happy #FossilFriday! 🐚🦴

Thinking about this during this season of recommendation letters xkcd.com/773/

"Here we show substantial declines in the rates of collection of specimen data over recent decades, from analysis of over 150 million records from the Global Biodiversity Information Facility (GBIF) spanning more than two centuries" www.nature.com/articles/s41... 🧪 #Macroecology #EvoBio #Paleobio

Every two weeks at least one such case of a visitor inquiry at our department 😅 🧪⚒️ #Geology

While discussing ideas on the evolution with @svalver.bsky.social and wandering around wonderful Barcelona, I'm learning some architectural paleontology. Giant (pea-sized) foraminifera — Nummulites and some sea urchin spines. Provenance probably local Eocene «piedra de Gerona», España. 🧪⚒️ #Geology

Tomorrow 11/26 at 12:00: @andrejpaleo.bsky.social on the deep-time dynamics of Earth's biosphere. If you’re interested in macroevolution, paleoclimate, complex systems, or scaling laws in natural history, this is one you shouldn’t miss! Charles Darwin room @prbb.org! @ibe-barcelona.bsky.social

At lunch with @svalver.bsky.social found this amazing anatomy of Gilt-head bream (Sparus aurata). The teeth of a durophagous predator of small shelly prey.

Finally a thread that intersects with the insights and expertise of @chrisklausmeier.bsky.social and @maitner.bsky.social