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Narimane Chatar

@narimanechatar.bsky.social
240 followers 118 following 73 posts

Postdoc at UC Berkeley | Crazy cat lady interested in fossil carnivorans 🦁🐻🦦 | Biomechanics & morphometrics 🦾📊 | PhD'23 from Université de Liège | She/her 🇧🇪🇲🇦

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Narimane Chatar @narimanechatar.bsky.social · 22/09/2026
So happy to have been invited by Rex Mitchell for this little chat about our recent tooth paper in @science.org (doi.org/10.1126/scie...) for his YouTube channel, @theskullywaglab.bsky.social, check it out 🤩: www.youtube.com/watch?v=6TmK... #SciComm #ScienceCommunication #AcademicChatter
youtube.com
Skullywag Chats #2 | Dr Narimane Chatar | Teeth, Macroevolutionary ratchets, Saber-tooths
YouTube video by The Skullywag Lab
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Alessandro Chiarenza @macroecoevoale.bsky.social · 16/09/2026
How do you take the temperature of a T. rex 66 million years too late? Time machine? Impossible. Billionaire’s dinosaur island? Risky. Geochemistry? Much safer 🦖🌡️ Our new Science Advances paper adds evidence for an endothermic, “warm-blooded” T. rex, link to the paper 🔗 doi.org/10.1126/scia...
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Narimane Chatar @narimanechatar.bsky.social · 16/09/2026
New paper out in Integrative and Comparative Biology (@sicbjournals.bsky.social) lead by @morganefo.bsky.social ! 🥳Morgane investigated the shape variation throughout the life cycle of the Alpine newts using GMM on skulls and mandibles🦎 doi.org/10.1093/icb/...
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Prosanta Chakrabarty @prosanta.bsky.social · 15/09/2026
Another big potential #FishJob Curator of Fishes (or Mammals, but let it be ichthyology) at the American Museum of Natural History careers.amnh.org/postings/4925
careers.amnh.org
Assistant Curator/Assistant Professor, Vertebrate Zoology
The Division of Vertebrate Zoology at the American Museum of Natural History (AMNH) seeks an outstanding tenure-track Assistant Curator/Assistant Professor in either the Department of Ichthyology or M...
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Paul Z. Barrett PhD @nimravenous.bsky.social · 09/09/2026
Happy to announce the publication of our article in Nature Ecology & Evolution on adaptive zone evolution in terrestrial mammal carnivores. Over the next few days, I’ll share the major results—and by extension, take you on a tour of carnivore evolution. (rdcu.be/6okG1hVhvtHa) 1/n
rdcu.be
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Journal of Anatomy @journalofanatomy.bsky.social · 09/09/2026
Congratulations to the authors on this excellent new contribution to our understanding of proboscidean biomechanics! 🐘
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Narimane Chatar @narimanechatar.bsky.social · 08/09/2026
New #OpenAccess paper out in @journalofanatomy.bsky.social 🤩 In this study lead by MSc student @paleonico.bsky.social; we investigate compressive loading in proboscidean 🐘 (elephants & their extinct relatives) using FEA and highlight different mechanical strategies 🦾 doi.org/10.1111/joa....
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Nicolas Wagner @paleonico.bsky.social · 08/09/2026
Excited to share my new first-authored paper, now published in the @journalofanatomy.bsky.social! 🐘🦴 Using FEA, we reveal distinct biomechanical strategies in proboscidean humeri: robust forms better resist multidirectional stresses, while slender forms favour near-axial loading. 10.1111/joa.70234
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 04/09/2026
#ICVM2027 @isvmorph.bsky.social is shaping up! 11 Symposia and 3 Workshops are now formally accepted! This will be a don't-miss conference! More details: www.isvm-icvm.org
Symposia:
1.	Secondary aquatic amniotes through deep time: evolution, ecology, and preservation
2.	Building movement: muscle-bone interactions across vertebrate taxa
3.	Giants and dwarfs: the impact of extreme body size change
4.	Paleo-evo-devo: integrating evolution, development, and the fossil record
5.	Integrating approaches to study the repeated evolution of burrowing in vertebrates
6.	The vertebrate skull as a multifunctional structure
7.	Evodevo on fish & chicks: from Halifax and Nova Scotia to the rest of the world
8.	Ecological and developmental morphology of vertebrate teeth
9.	Fish morphology across deep time illuminated by traditional and cutting-edge methods: a symposium honoring the contributions of John G. Maisey
10.	Evolving in TREE dimensions: new perspectives on arboreal adaptations in tetrapods
11.	Functional adaptive landscapes: combining morphology, function, and evolutionary theory

Workshops:
1.	Functional adaptive landscapes: combining morphology, function, and evolutionary theory
2.	Biomechanical analyses in MATLAB
3.	Regionalization in serially homologous structures using morphoregions
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Didier B. Dutheil @didierdutheil.bsky.social · 09/08/2026
⚠️ "New article alert: The rise of carnivoran mammals in Europe through the lens of body mass". By @val-fisch.bsky.social, Floréal Solé, Kevin Le Verger, Bastien Mennecart, Melvin Vankelst, @narimanechatar.bsky.social, Robert P. Speijer, Stéphane Peigné & Thierry Smith ➡️ doi.org/10.1098/rsbl...
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Chris Law @chrislaw.bsky.social · 05/08/2026
New pre-print testing if bats, carnivorans, & primates occupying equivalent dietary niches evolved convergent mandible shapes & shared adaptive zones! Short answer: no. With @mberthaume.bsky.social, @savannahecobb.bsky.social, & @sesantana.bsky.social www.researchsquare.com/article/rs-1...
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Narimane Chatar @narimanechatar.bsky.social · 05/08/2026
Amazing day for carnivorous mammal enthusiasts out there 🐺🦁🐻🦝🦦two new papers out in @royalsociety.org 🥳: Vankelst et al 2026 in Proceedings B doi.org/10.1098/rspb... and @val-fisch.bsky.social & Solé et al. 2026 in Biology Letters doi.org/10.1098/rsbl... More details below👇🧵1/9
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Prof. Valentin Fischer @val-fisch.bsky.social · 05/08/2026
New paper by Ph.D. student Melvin Vankelst in Proc B. We modified our semi-automated high density 3D geometric morphometrics protocol to fit carnivoran molars, and test the shape-diet links of these teeth. Check it out! @universitedeliege.bsky.social royalsocietypublishing.org/rspb/article...
royalsocietypublishing.org
Decoupling geometry and topography reveals contrasting ecomorphological signals in carnivoran carnassial teeth
Abstract. The lower carnassial tooth (m1) is a key innovation underlying the ecological diversification of Carnivora. However, their exceptionally diverse
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Prof. Valentin Fischer @val-fisch.bsky.social · 05/08/2026
Second paper out today on fossil carnivorans, this time in Biology Letters @royalsocietypublishing.org. We looked at the evolution of the body mass of carnivorous mammals throughout the Paleogene, comparing the patterns in Europe vs USA 1/3
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Z. Jack Tseng @tsengzj.bsky.social · 05/08/2026
New paper out on dietary signals in tooth topography vs morphometrics, first-authored by the impressive Melvin Vankelst in the @val-fisch.bsky.social lab! FAVE Lab had the pleasure of hosting Melvin for this and other research activities during a semester-long visit earlier in the year.
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Narimane Chatar @narimanechatar.bsky.social · 03/08/2026
Only 2 days left to submit your abstract! 🚨 Submit to the 'The Future of the Fossil Record: Developments, Trends and Innovative Approaches in Paleontology' session here : agu.confex.com/agu/agu26/pr...
static.klipy.com
Cat Typing on Laptop
ALT: Cat Typing on Laptop
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Narimane Chatar @narimanechatar.bsky.social · 31/07/2026
I have to say it: technically with our 🦷 paper (www.science.org/doi/10.1126/...) and Jack's Gabi paper (www.science.org/doi/10.1126/...) 50% of the Science covers from July are from our lab 😎🔥
static.klipy.com
Barack Obama's Iconic Mic Drop
ALT: Barack Obama's Iconic Mic Drop
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Science Magazine @science.org · 30/07/2026
Research on the fossil record of mammals in Mexico suggests that the geographic region acted as a biodiversity “holding pen” for 10 million years. Learn more this week in Science: scim.ag/4xhNmQ9
A three-dimensional rendering shows the land bridge connection between North and South America. Research on the fossil record of mammals in Mexico suggests that the geographic region acted as a biodiversity “holding pen” for 10 million years, buffering the pace of both northward and southward movements of mammal species leading up to the Great American Biotic Interchange.

Illustration: C. Bickel and V. Penney/Science. Data: NASA Blue Marble Imagery, August 2026; B. Tozer, D. T. Sandwell, W. H. F. Smith, C. Olson, J. R. Beale, P. Wessel, Global bathymetry and topography at 15 arc sec: SRTM15+ (2019), distributed by OpenTopography, https://doi.org/10.5069/G92R3PT9, accessed 24 June 2026
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Z. Jack Tseng @tsengzj.bsky.social · 30/07/2026
Here is @ucberkeleyofficial.bsky.social Bob Sanders' write-up of our Great American Biotic Interchange work: news.berkeley.edu/2026/07/30/n...
news.berkeley.edu
North and South America weren’t always connected, but their mammals still found a way to intermingle - Berkeley News
Before the Panamanian land bridge formed about 3 million years ago, mammals on the two continents were isolated — or so biologists thought. New fossils show that they found ways to mix long before tha...
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Narimane Chatar @narimanechatar.bsky.social · 30/07/2026
Massive congrats to @tsengzj.bsky.social & colleagues for this new piece of research highlight the role of México as a holding pen for faunal exchanges during the GABI starting 10 mya 😱 www.science.org/doi/10.1126/...
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Z. Jack Tseng @tsengzj.bsky.social · 30/07/2026
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/...
Cover of Science magazine for July 30, 2026. Caption from Science reads: A three-dimensional rendering shows the land bridge connection between North and South America. Research on the fossil record of mammals in Mexico suggests that the geographic region acted as a biodiversity “holding pen” for 10 million years, buffering the pace of both northward and southward movements of mammal species leading up to the Great American Biotic Interchange.
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Lauren Sumner-Rooney @laurensr.bsky.social · 29/07/2026
📢 JOB ALERT! 📢 I am recruiting a 30-month postdoc to work on modelling the vision of trilobites @hfspo.bsky.social ! If you like 3D data, fossils, and functional morphology, this is the one for you! 📆Deadline 27. Aug Pls contact me with any Qs and share widely! www.bristol.ac.uk/jobs/find/de...
bristol.ac.uk
Details | Working at Bristol | University of Bristol
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Stephan Spiekman @stephanspiekman.bsky.social · 29/07/2026
Excited to share our new paper in Science Advances! Led by Dr Wei Wang at #IVPP in Beijing, it presents a complete skeleton of #Austronaga, the most marine of all archosauromorphs. To boot, this fossil preserves the oldest complete digestive tract of any reptile! www.science.org/doi/10.1126/...
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Science Magazine @science.org · 16/07/2026
A new study in Science details how a dental tradeoff may have shaped mammalian carnivore evolution. Learn more in this week’s issue: scim.ag/4571LlU
The image shows skulls and lower jaws from several living and extinct mammal species, highlighting differences in size, shape, and feeding adaptations. Featured specimens include an extinct saber-toothed cat alongside extant species. This subset highlights specimens that were specialized in either crushing or slicing as well as a species of civet that was balanced in both functions.

Photo: Melvin Vankelst
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Narimane Chatar @narimanechatar.bsky.social · 27/07/2026
ABSTRACT SUBMISSION DEADLINE for #AGU2026 COMING SOON (🗓️August 5 🗓️)! 🚨Don't forget to submit your abstract for our paleo session 🦖 The Future of the Fossil Record: Developments, Trends and Innovative Approaches in Paleontology 🔗 tinyurl.com/mtkyptc7 See y'all in San Francisco 🌉
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Eloy Gálvez López @eloygl.bsky.social · 22/07/2026
Absolutely fantastic study. Neatly summarized by @narimanechatar.bsky.social in this thread, but go read the paper, it's also great.
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Narimane Chatar @narimanechatar.bsky.social · 21/07/2026
Amazing work by PhD student Romain Cottereau 😍 🐳 🐋
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Dr James Rule @palaeo-jrule.bsky.social · 17/07/2026
Great new paper in Science from @narimanechatar.bsky.social and colleagues on morpho-functional divergences in the carnassial teeth of carnivores! 🦁 🐯 🐺 🦊 🦝 🧪 Check out the thread below!
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Universidad de Málaga @univmalaga.bsky.social · 17/07/2026
🔎 @narimanechatar.bsky.social se encuentra actualmente en la 🏛️ 🇺🇸 Universidad de Berkeley (California) con una #beca europea Marie Curie, pero arraigada al área de Paleontología de la UMA, institución a la que regresará en 2027 🔗 www.uma.es/sala-de-pren... #TalentoUMA
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Universidad de Málaga @univmalaga.bsky.social · 17/07/2026
👩‍🔬 Nuestra científica @narimanechatar.bsky.social lleva su #investigación a la portada de @science.org, una de las más prestigiosas del mundo. El equipo internacional, del que forma parte, ha descifrado la relación entre la forma y función en los 🦷 dientes inferiores de los mamíferos.
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 16/07/2026
Performance trade-offs define a fundamental dental dichotomy in mammals | Science www.science.org/doi/10.1126/...
science.org
Performance trade-offs define a fundamental dental dichotomy in mammals
Teeth define mammalian evolution, and one of many adaptive dental breakthroughs in crown mammals is the tribosphenic molar: a tooth with a dual shearing-crushing function, often considered a key adapt...
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Narimane Chatar @narimanechatar.bsky.social · 16/07/2026
Excited to share our latest study highlighted on the cover of @science.org 🥳Combining a 3D dataset representing 250 taxa spanning the whole Cenozoic, 3D modelling & printing and material testing; we deciphered the form-function relationship in the lower 🦷 of mammals www.science.org/doi/10.1126/...
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University of California Museum of Paleontology @ucmpberkeley.bsky.social · 16/07/2026
🎉Another UCMP paper in Science, this time on the cover! 🎉
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Z. Jack Tseng @tsengzj.bsky.social · 16/07/2026
Our newest paper on mammalian dental evolution, out today as the cover article in @science.org, lead by @narimanechatar.bsky.social with a team of fantastic early career scientists!!! 🎉🥳 “Performance trade-offs define a fundamental dental dichotomy in mammals” www.science.org/doi/10.1126/...
Cover image of Science Magazine, with images of carnivore jaws and teeth on black background.
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Narimane Chatar @narimanechatar.bsky.social · 16/07/2026
Something BIG coming today at 2pm ET 🤩
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Z. Jack Tseng @tsengzj.bsky.social · 16/07/2026
Excited for a major paper drop tomorrow with @narimanechatar.bsky.social! Watch this space if you like mammals and teeth!
A meme containing an image from the movie “A few good men” of a man in military uniform yelling emphatically. The caption of the meme says “You can’t handle the tooth”.
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eavpalaeo.bsky.social @eavpalaeo.bsky.social · 08/07/2026
We have an #update on the timing of #EAVP2027! Due to an unexpected issue, the EAVP 2027 has to be postponed to 12-16 July 2027 (and not the dates commented below).
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Narimane Chatar @narimanechatar.bsky.social · 08/07/2026
There will be a paleo session at #AGU2026! B088 The Future of the Fossil Record: Developments, Trends and Innovative Approaches in Paleontology. Don't forget to submit your abstract 🔗 tinyurl.com/mtkyptc7 📅 Deadline: Wednesday, 5 August 2026 📍 7–11 December 2026 | San Francisco, CA
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Pasha van Bijlert @pashavanb.bsky.social · 01/07/2026
Do you use (musculoskeletal) physics simulations with contact spheres? Then my new paper in @jbiomech.bsky.social is for you! This is my first single-author paper, and the third published chapter from my PhD at @uugeo.bsky.social 🥳 Paper (open access): www.sciencedirect.com/science/arti...
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Z. Jack Tseng @tsengzj.bsky.social · 26/06/2026
New publication from UCMP scientists out in Science: fruity plants began to diversify their reproductive strategies prior to the K-Pg extinction. For early #FossilFriday! www.science.org/doi/10.1126/...
science.org
Diversification of angiosperm reproductive strategies predated the end-Cretaceous extinction
Angiosperm reproductive evolution is traditionally linked to the end-Cretaceous biotic crisis and subsequent ecological restructuring. Here, we report diverse and unexpectedly large diaspores (dispers...
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Narimane Chatar @narimanechatar.bsky.social · 26/06/2026
New paleobotany study led by UCMP folks out in Science 🤩🌿
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 25/06/2026
Diversification of angiosperm reproductive strategies predated the end-Cretaceous extinction | Science www.science.org/doi/10.1126/...
science.org
Diversification of angiosperm reproductive strategies predated the end-Cretaceous extinction
Angiosperm reproductive evolution is traditionally linked to the end-Cretaceous biotic crisis and subsequent ecological restructuring. Here, we report diverse and unexpectedly large diaspores (dispers...
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Dr Ross Barnett @deepfrieddna.bsky.social · 22/06/2026
Congrats @narimanechatar.bsky.social and @tsengzj.bsky.social ! [Open Access] www.tandfonline.com/doi/full/10....
tandfonline.com
New material of Adelphailurus kansensis sheds light on the cranial anatomy of an early-diverging machairodontine felid
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...
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 21/06/2026
Full article: New material of Adelphailurus kansensis sheds light on the cranial anatomy of an early-diverging machairodontine felid www.tandfonline.com/doi/full/10....
tandfonline.com
New material of Adelphailurus kansensis sheds light on the cranial anatomy of an early-diverging machairodontine felid
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...
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 21/06/2026
Functional morphology of the first known skeleton of Leptarctus (Mustelidae, Carnivora) clarifies the palaeoecology of a distinctive predator lineage sjp.pensoft.net/articles.php...
sjp.pensoft.net
Functional morphology of the first known skeleton of Leptarctus (Mustelidae, Carnivora) clarifies the palaeoecology of a distinctive predator lineage
Leptarctine mustelids are Neogene carnivorans with fossil records in Asia and North America. In the 170 years since the clade was erected, all taxa within this clade have been characterised based on c...
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Journal of Vertebrate Paleontology @jvertpaleo.bsky.social · 20/06/2026
🚨New Pub!🚨New material of Adelphailurus kansensis sheds light on the cranial anatomy of an early-diverging machairodontine felid🔪🦷by Chatar & Tseng www.tandfonline.com/doi/full/10....
tandfonline.com
New material of Adelphailurus kansensis sheds light on the cranial anatomy of an early-diverging machairodontine felid
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...
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Ryan N. Felice @rnf.bsky.social · 19/06/2026
New paper out today! @sternarchella.bsky.social and I review how modularity and integration influence adaptive radiations and diversification. Read it here: rdcu.be/fpcSX
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BMC @bmc.springernature.com · 20/05/2026
Non-invasive 3D imaging is transforming palaeontology and evolutionary biology, yet data sharing lags behind genomics. In a Review in BMC Ecology and Evolution, @narimanechatar.bsky.social and colleagues discuss opportunities, barriers, and steps toward FAIR, reproducible digital morphology. #MedSky
bit.ly
Open access and digital morphology data in evolutionary biology: expanding frontiers of knowledge - BMC Ecology and Evolution
The recent integration of 3D imaging and digital methodologies has revolutionized evolutionary biology, offering unprecedented opportunities for analysing and sharing morphological data. However, the transition toward open access remains incomplete due to persistent technical, legal, and institutional barriers. Issues such as lack of standardization, massive file sizes, and unclear intellectual property rights continue to hinder data verification and reproducibility. These challenges have acquired new urgency with the rapid rise of machine learning and AI-based tools for automated segmentation, landmarking, and shape analysis, which require large, standardized, and openly accessible training datasets — making inaccessible 3D data not merely an inconvenience, but a source of systematic bias in the algorithms shaping the field’s future. This review synthesizes technical, legal, and behavioural perspectives on open data in digital morphology, building on prior work to address the specific challenges of the current AI era. By advocating for the adoption of FAIR principles, the use of persistent digital identifiers, and the implementation of digital watermarking, we offer recommendations for establishing minimum standards in data publication. Ultimately, a shift toward responsible data stewardship is essential to ensuring that digital morphological resources remain accessible, reproducible, and scientifically valuable for both human and computational users.
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Narimane Chatar @narimanechatar.bsky.social · 19/06/2026
Out in @jvertpaleo.bsky.social for #FossilFriday with @tsengzj.bsky.social @amnh.org back in 22' I found a skull labelled Pseudaelurus. It turned out to be the most complete skull of Adelphailurus kansensis, an early-diverging machairodont🦁🔪 doi.org/10.1080/0272... 🎨 by @gamarraptor.bsky.social
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