Aaron O'Dea

The UC President's Postdoctoral Fellowship program is accepting applications until November 1. If you're a finishing Ph.D student or recent grad interested in coming to Berkeley to work on a project in paleobiology/paleoecology/geobiology please feel free to reach out! ppfp.ucop.edu/info/

I have a Perspective piece in Science, "The scales of strain on sharks" www.science.org/doi/full/10.... commenting on a really wonderful article by Erin Dillon et al., "Fossil denticles reveal how ocean productivity shapes shark baselines and recovery potential" www.science.org/doi/10.1126/...

How many #sharks should there be on a coral #reef? Our new publication in Science tackles this question using thousands of fossil shark dermal denticles—tiny, tooth-like scales that are shed and preserve in sediments—from Panama's two oceans. Check it out here: doi.org/10.1126/scie...

Exhilarated to share a 2nd @science.org cover article this month from our lab @ucberkeleyofficial.bsky.social! A collaboration with US & Mexico colleagues on the role of a Mexican biogeographic holding pen in shaping the Great American Biotic Interchange (GABI)(1/11) www.science.org/doi/10.1126/...

Excited to share a preprint of my 3rd dissertation chapter! We evaluated how a potential genomic measure of sexual selection strength, the ratio of genetic diversity on the Z chromosome vs the autosomes, varies across selective and biogeographic contexts in #manakins. Check it out! bit.ly/4fY43de

Apply!! 3 open postdocs in biome biogeography and macroecology in @nezimmermann.bsky.social's amazing ERC project on global biome mapping and evolution: 1) apply.refline.ch/273855/1856/... 2) apply.refline.ch/273855/1857/... 3) apply.refline.ch/273855/1858/...

This is the local coatí. The kids named him Baron Von Bullfroggen

Our latest piece, just out

Our new paper is online! We found that 1) today's shark & ray diversity was already reached ~100Ma; 2) that the K/Pg extinction was not catastrophic; 3) that the max diversity was reached ~50Ma; and 4) that today's diversity is depleted compared to the past. www.cell.com/current-biol...

New paper out today! "Fossil otolith assemblages reveal millennial-scale changes in reef fish biomass and trophic structure across the Isthmus of Panama" 🔓https://doi.org/10.1098/rstb.2024.0419 We used fossil fish otoliths to reconstruct community structure and energetics over millennia.

So excited to see this out! Metabarcoding shows fishes shift diets on degraded reefs; growth rates similar, condition diverged → species-specific coping strategies buff.ly/kGkEDpw @mattleray.bsky.social @nancyknowlton.bsky.social @odealab.bsky.social @sbac-manmetuni.bsky.social @stri_panama +others

Interested in Historical Ecology and Conservation Palaeobiology? 🪸🦀 Steve Pates and I are offering a PhD project on Unlocking Palaeo-Historical Biodiversity Data to Inform Ecological Baselines @es-ucl.bsky.social @uclcber.bsky.social 🗓️ Apply by 19th January 2026 www.findaphd.com/phds/project...

#ICRS is the premier conference for all things coral reef, and a great place to foster thinking and collaboration between ecologists, historical ecologists, and palaeontologists. Consider submitting your abstract to "Reefs through Time", hosted by some top-notch researchers #Coral #Paleobiology

In time for #FossilFriday, a new paper by Jansen Smith and many paleontologists (including me) on what questions the field may focus on in the coming decade Identifying the Big Questions in paleontology: a community-driven project | Paleobiology | Cambridge Core - www.cambridge.org/core/journal...

One of the most-viewed PNAS articles in the last week is “Unprecedented suppression of Panama’s Pacific upwelling in 2025.” Explore the article here: www.pnas.org/doi/10.1073/... For more trending articles, visit ow.ly/Me2U50SkLRZ.

New paper! led by Chris Perry: Most W. Atlantic reefs in current state can't keep up with sealevel rise at 2°C+. If reefs could accrete at Holocene rates (like these in Enriquillo basin) they'd manage fine. Restoration pockets offer some local hope, but overall sobering news doi.org/10.1038/s415...

Just one more week (till 5 Sept) to apply for the postdoc position with me at UA Museums' Department of Museum Research and Collections. NSF-project together with Jill Leonard-Pingel, @odealab.bsky.social, and @sethf.bsky.social focused on marine ecosystems in Panama. bsky.app/profile/pale...

Calling all Palaeontology PhD candidates and post-docs everywhere! No matter what your particular field of research or country of institution, please follow forms.gle/cLLkEjdLjPrT... and fill in my ANONYMOUS RESEARCH SURVEY – #Yourpalaeolife : investigating fieldwork by early career palaeontologists

Job Alert‼️ Postdoctoral Fellow opportunity in paleontology/biology at the University of Alabama Museums: careers.ua.edu/jobs/688232b... Aim: assess biotic interactions using mollusks from both sides of the Isthmus of Panama. Please share widely! @paleosoc.bsky.social @almnh.bsky.social

I do like a good past analogue for future change. V cool study by Pallacks et al shows how twilight zone lanternfishes—vital prey & carbon cyclers and earth's largest biomass—vanished from the E. Mediterranean when oxygen dropped, but rebounded fast when it returned. www.nature.com/articles/s43...

We are hiring a lab manager for our lab family at Naos Island in Panama. More information and position description here: odealab.com/opportunities/. Deadline is today, but if you need more time please just let me know

Nice video report from Shuchita Jha at @inold.news on our Caribbean reef trophodynamics paper (www.pnas.org/doi/10.1073/...). How can some reef fishes be bigger today than they were 7,000 years ago? youtu.be/buGORJ3F1iM

This is the Panama Canal with the centennial bridge over the Culebra Cut, the locks leading into the Pacific ocean and Panama City in the background