New paper out in Geology! Cheilostome bryozoans evolved aragonite skeletons dozens of times during the transition from calcite to aragonite seas, in contrast to other marine calcifiers. Fossil occurrence data corroborate the story and help nail down the timeline. doi.org/10.1130/G537...

🚨 We're hiring!
PhD position in Evolutionary Systems Biology at Stockholm University & SciLifeLab

🎓 Focus: evolution, development, computational & mathematical modeling, prediction
📍 Stockholm, Sweden
🕒 4 years, fully-funded
🔍 Details: su.varbi.com/en/what:job/...

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The Gaza Famine is the world’s famine. A preventable, predictable famine.

Enough. Ceasefire. Open all crossings, north and south. Let us get food in, unimpeded and at massive scale.

Another incredibly shameful move from the Trump administration. Upending the lives of so many young people to score cheap political points is absolutely unconscionable.

www.nytimes.com/2025/05/22/u...

#FossilFriday Jabba the Zooid. This teratological zooid in a colony of the bryozoan Tornipora reminds me of Jabba the Hutt from Star Wars. Cretaceous, Campanian, Archiac, SW France.

We’re hiring a postdoc (2+ years) in macroecology and macroevolution in my new lab at CZU Prague: www.researchgate.net/job/1021667_...

The white noise model is a statistical interpretation of stasis, which distinguishes it from a random walk process.

Stasis is defined as trait evolution similar to a white noise process (variation around a fixed mean). There is no cut-off for how much variation the trait mean can fluctuate around the steady state, so time series that fit stasis can actually show significant evolution (but with low net evolution).

Are you seeking a postdoc opportunity? The Natural History Museum in Oslo is on the lookout for candidates who want to create their own projects. If you're interested in brainstorming project ideas, feel free to reach out! More information here:👇 www.jobbnorge.no/en/available...

Here is our attempt at summarizing the state of the evidence for the punctuated equilibrium hypothesis. The paper is part of a special issue of Paleobiology celebrating the 50th anniversary of the PE Hypothesis. Work led by Gene Hunt. @lhliow.bsky.social www.cambridge.org/core/journal...

PhD position alert! Fully-funded PhD in my group to work on avian reproductive microbiomes and immunity. Please RT! Deadline June 29th, reach out for more information. #microbiomes #sparrows #spermbiology

4 years ago, @anjaligupta.bsky.social spent a summer in Lund and collected amazing data of #damselflies. Now, the data/results are published doi.org/10.1093/jeb/... @jevbio.bsky.social ky.social. My highlight: we proposed a way to relate present-day selection #microevolution with #macroevolution.

We're super excited to introduce a new article category for @asn-amnat.bsky.social: Inspiring perspectives. In a nutshell, we want these articles to spark lively scientific debates that will inspire future research directions in biology. More info here: www.journals.uchicago.edu/doi/full/10....

The Department of Natural History at NTNU is seeking an ambitious candidate for an open position as associate professor in vertebrate evolutionary genomics. Please see 👇 for details. Deadline for applications is May 25.

www.jobbnorge.no/en/available...