Delighted as always to join @dkskelly's class focused on the transformative potential of museum collections! 🦕 #fossils #museums #biosignatures

New paper involving @marihaase led by Araújo et al. on histological inferences of the metabolic performance and thermoregulatory strategy of a tapejarid pterosaur. Out now in Paleobiology: www.cambridge.org/core/journal...

A new study puts T. rex's body temperature close to our own, around 97 degrees. Johns Hopkins paleobiologist @jwiemann.bsky.social says it complements her own 2022 research into dinosaur metabolism. www.scientificamerican.com/article/t-re...

T. rex was as warm-blooded as humans, new study finds

The dinosaurs were once considered reptilian, but the new results suggest we may need to rethink their evolution

scientificamerican.com

Unstoppable! Here is yet another paper published today involving Pjotr Meyvisch: this time, the team integrated ATR-FTIR and tools from microbiology to illuminate the life cycle of a cosmopolitan dinoflagellate causing harmful blooms. #spectroscopy #oceans #microbiology

New paper on #biosignatures involving one of our lab members: Congrats to my brilliant postdoc Pjotr Meyvisch for using vibrational #spectroscopy to place enigmatic Multisphaeridium-type #acritarch #fossils in the tree of Life! ➡ It's a chytrid! What an elegant approach to phylogeny ...

✅ Both of your postdocs have their super fancy, lead-authored papers submitted, just in time for the next PI grant & faculty job cycle! 🤩 #paleontology #evolution #globalchangebiology #oceanography #fossils #microbiology #geochemistry #biosignatures

Join us at AbSciCon and/or reach out for opportunities in the lab! Here's the link to our lab homepage: www.jasminawiemann.com

It's time to move into our labs! 🤩

New paper out by Izidio et al., involving @marihaase: Crocodylomorph dietary versatility has implications for metabolic capacity ... if we could just extract metabolic signals from teeth 🐊 Link: www.tandfonline.com/doi/full/10....

Happy Easter: Here are some Easter egg color ideas - based on our reconstructions of dinosaur egg colors! Not all dinosaurs laid hard-shelled eggs though, and we will update and expand this list soon thanks to brilliant research with @marihaase! 🐰🐣🌷 #easteregg #dinosaurs #DIY #paleoart

Huge congrats to @miller_m_l for passing the DQE - Rock on!

Lab renovations are almost finished!

I am heartbroken to learn to George Rossman has passed away - George was not only a brilliant chemist turned geoscientist, but also had an exceptionally good taste in methods - Raman + FT-IR spectroscopy - and cookies ... [1/3] www.gia.edu/gia-news-pre...

Happy International Women and Girls in Science Day from our team here at Hopkins! #internationalwomenandgirlsinscienceday

How did animal biominerals evolve and what is the [yet] unrealized evolutionary potential of skeletons? Curious? Join me for my talk at #sicb 2026 today at 2.30 pm in B112!

When and how did avian-style endothermy evolve? In #dinosaurs, or #archosaurs, or even archosauromorphs? Merging genomics and #geochemistry provides new phylogenetic, temporal, and mechanistic constraints! Join us tomorrow [#SICB] at 8 am for Megan's ground-breaking new data!

Wrapping up 2025 - on to 2026!

Happy holidays! 💚

Packard Fellow and Johns Hopkins University scientist Dr. Jasmina Wiemann is working to understand how living organisms respond to planetary change by developing innovative ways to read molecular “memories” preserved in ancient organisms—helping fill some of the blank pages in the history of life.

Wrapping up 2025 with our first lab datathon - go team! 🤩 With PJ 🔬, Liam🐚, Megan🐣, & Mariana🐊!

Excited to announce our session at AbSciCon 2026! We welcome abstracts covering topics across #Paleontology, #Geobiology, #Chemistry, #genomics, #evolution, #astrobiology, #biosignatures, #molecularpaleobiology. It's a fun and very interdisciplinary conference! Join us in Madison, WI, in 2026!

I'm delighted to share the latest publication involving my lab - out now in PNAS: Geochemists & Paleontologists across the globe joined forces to confirm the preservation of molecular #biosignatures in #fossil organic matter - and explore signals associated with photosynthesis.

Currently looking for a postdoctoral position and interested in this kind of research? 👀 Dr Hagen currently has an open position in his new Computational Integrative Biodiversity group at Goethe University Frankfurt, for more details see: www.uni-frankfurt.de/48794987/Zen...

Palaeoverse@palaeoverse.bsky.social · 11mo ago

🚨Palaeoverse Lecture Series🚨 🗓️30th October 2025, 15:00 UTC🗓️ Join us next week to hear from Dr Oskar Hagen, on “Mechanistic biodiversity modelling with gen3sis: population-based simulations across regional and global domains to deep and shallow time” 🌐 Register here: bit.ly/palaeoverse-...

Join my brilliant grad student Megan and me [representing @Hopkins_PaLEO] in the 'Ancient Biomolecules' symposium at SVP 2025 in Birmingham! Prospective grad students and postdocs looking for opportunities in Molecular Geo-, Astro-, Paleobiology, catch me after my talk!

If you are planning to attend GSA Connects 2025 by @geosociety.bsky.social next week, stop by the 'New Advances in Geobiology' session! I will be talking about the evolution of skeletons as revealed by fossil biomolecules and biosignatures 🔬🧪🧬! #paleontology #fossils #astrobiology

Prof. Jasmina Wiemann has been selected for a prestigious Packard fellowship. This the first recognition of a paleobiologist by the Foundation! That is 8 Packard Fellows in 6 years for Johns Hopkins University. Prof. Wiemann's website is the stuff of movies: www.jasminawiemann.com

I’m thrilled to be a part of the 2025 class of #PackardFellows and I look forward to all the exciting & actionable discoveries at the interface of evolutionary biology, ecology, the geosciences, and chemistry that this award enables! @jhuartssciences.bsky.social www.packard.org/2025fellows

Packard Foundation@packardfdn.bsky.social · 12mo ago

@maartensap.bsky.social , @skinnider.bsky.social , @jameststroud.bsky.social , @jwiemann.bsky.social, @umich.edu, @nuchemistry.bsky.social, @texasscience.bsky.social, @mitcee.bsky.social, @mit.edu, @cmu.edu, @uwmadison.bsky.social

We have a new paper out - spearheaded by the brilliant Madison Tripp and Kliti Grice at Curtin in Western Australia: Biomarkers preserve exceptionally well in diagenetic carbonates rather than phosphates. #paleontology #astrobiology #geochemistry Link: onlinelibrary.wiley.com/doi/10.1111/...

I am very much looking forward to join my brilliant colleagues of the Ancient Biomolecular Lab @amnh next week to talk about frontiers in ancient biomolecular research! We will also discuss the current momentum in the field and the remaining big, open questions!

SVP 2025 abstract decisions are out: I am very excited to share that I will talk about how machine-learning applied to modern and #fossil biomolecules transforms our understanding of the early evolution of the vertebrate (+ outgroup) biomineralization toolkit! [1/2]