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Prof. Valentin Fischer

@val-fisch.bsky.social
396 followers 203 following 47 posts

Professor of palaeontology @ Université de Liège, Belgium Director of the Evolution & Diversity Dynamics Lab. I study the biodiversity and extinctions of fossil marine predators

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Reposted by Prof. Valentin Fischer
Sophie Boerman @crocsophie.bsky.social · 30/09/2026
🌊🐊 Were some of the earliest crocodylians venturing into the sea? 🦴 For our new paper in Palaeontology, we CT-scanned three skulls of “thoracosaurs” and found clues for a shallow-marine lifestyle in these enigmatic critters. ➡ doi.org/10.1111/pala... ️📖
A thoracosaur crocodylian hunting for fish in a colorful, biodiverse lagoonal ecosystem
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houssayecnrs.bsky.social @houssayecnrs.bsky.social · 28/09/2026
We describe a new freshwater mosasaur, from Provence France, with N Bardet @cr2p.bsky.social, FL Pelissier, Y Dutour, E Turini & T Torstosa in @peercomjournal.bsky.social. Welcome to Garamaudo! It seems that mosasaur evolution was more complex than we thought peercommunityjournal.org/articles/10....
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Darren Naish @tetzoo.bsky.social · 28/09/2026
Alright, talk ready to go. Marine Reptiles 2026 meeting at Oxford University Museum of Natural History. There are SO many talks (and posters), I'm really looking forward to it. #ichthyosaurs
Talk cover slide on Robert Appleby's ichthyosaur work, showing art by Bob Nicholls and images of Cretaceous ichthyosaurs Acamptonectes and Malawania.
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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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Open Palaeontology @openpalaeo.bsky.social · 26/08/2026
Open Palaeontology has a new look 💜 Our brand-new website is live! Same mission as ever: Diamond Open Access palaeo research — free to publish, free to read, for everyone. Come explore ➡️ www.openpalaeo.org #PaleoSky #OpenAccess #Palaeontology
openpalaeo.org
Cahiers de l'ILTP
Open Palaeontology is an international Diamond Open Access journal promoting open science in palaeontology
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Rebecca Sear @rebeccasear.bsky.social · 25/08/2026
Ghent University members are asking for support, so its institution can investigate Cofnas as its regulations require, and because: "appeals to absolutist academic freedom as a guise for pursuing racist and pseudoscientific research threaten the integrity and credibility of research as a whole"
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Prof. Valentin Fischer @val-fisch.bsky.social · 24/08/2026
The EDDyLab Summer Mammal Madness continues with Michaud et al 2026 in @journalofanatomy.bsky.social on musteloid brains! @universitedeliege.bsky.social onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Brain scaling and diversity in musteloids
Virtual endocasts of 41 musteloid species show that brain organisation is dominated by size-related scaling: larger brains have expanded cerebra, reduced olfactory bulbs and hindbrains, and rounder e...
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Prof. Valentin Fischer @val-fisch.bsky.social · 20/08/2026
Another lab paper in a @royalsociety.org journal this summer: @rsookias.bsky.social and colleagues analyse the biodiversity dynamics of archosauromorphs before, during, and after the Triassic, in ProcB @universitedeliege.bsky.social royalsocietypublishing.org/rspb/article...
royalsocietypublishing.org
Dawn of the dinosaurs demonstrates early diversification bursts and a potential role for neutral dynamics during major evolutionary radiations
Abstract. Major radiations have given rise to huge swathes of life on Earth, and understanding their dynamics reveals the process of biodiversity generatio
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Alexis Rastier 🌿 @alexisrastier.bsky.social · 18/08/2026
Here is our new paper: Global proliferation of opportunistic pleuromeian lycopsids following the disappearance of the end-Triassic forests. Peng J, Slater S. M, McLoughlin S, Rastier A, Vajda V: doi.org/10.1038/s445... #Paleobotany #lycopsids #Jurassic
doi.org
Global proliferation of opportunistic pleuromeian lycopsids following the disappearance of the end-Triassic forests - npj Palaeoecosystems
npj Palaeoecosystems - Global proliferation of opportunistic pleuromeian lycopsids following the disappearance of the end-Triassic forests
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Manon Hullot, PhD @manonhullot.bsky.social · 12/08/2026
In the mean time we can choose to only publish in and review for society/non-profit journals. ISEM has a good list to help us: dafnee.isem-evolution.fr
dafnee.isem-evolution.fr
DAFNEE, a Database of Academia Friendly jourNals in Ecology and Evolution
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Prof. Valentin Fischer @val-fisch.bsky.social · 11/08/2026
Idea: create a diamond open access Journal of European Palaeontology, where all European researchers in palaeontology publish all their papers. Papers not published there will not be considered in CVs, promotions, etc. 1/3
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Dr. Aaron Thierry @thierryaaron.bsky.social · 10/08/2026
European summers aren't what they used to be! Grey curve is the climate of 1950-90. Every coloured line is a summer since 1991. Every one since 2005 sits beyond the 95th percentile of the curve. This isn't a shifting #climate. It's already a new one! 🤯🥵 Plot inspired by Barriopedro et al. 2011
Distribution of European summer temperature anomalies, June to August, over 25°W-40°E, 35-70°N, land only, the region used by Barriopedro et al., relative to 1961-1990, from ERA5. Grey bars show the 41 summers from 1950 to 1990, with a normal curve fitted through them, centred near zero. Coloured vertical lines show every summer from 1991 to 2025, shaded yellow through dark red by year, and almost all of them fall to the right of the grey distribution. The ten warmest are labelled, with 2024 furthest right at 2.74°C and 2022 next at 2.54°C. A dotted line marks the 95th percentile of the 1950-1990 distribution at 0.76°C.

Both run long, which is fine, since alt text has no practical limit and screen reader users benefit from the detail.
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 06/08/2026
The ICS released an updated geologic time scale back in June: stratigraphy.org/ICSchart/Chr...
stratigraphy.org
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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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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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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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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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Dr John Clarke @jclarkepaleo.bsky.social · 03/08/2026
Our new paper introduces a fast & Bayesian state-dependent OU model in RevBayes that implements joint inference, to test adaptive macroevolutionary hypotheses. Congrats @prilau.bsky.social! Be sure to give her a follow & give her original tweet some love! Many more exciting PCMs in her future!
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 23/07/2026
This blew my mind.
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Henry Gee 亨利·纪 @endofthepier.bsky.social · 22/07/2026
Early-diverging stem snake illuminates early diversity of our serpentine friends. Paper in @nature.com @trsimoes.bsky.social www.nature.com/articles/s41...
nature.com
Exceptional brain and ecological diversity in the earliest snakes - Nature
A well-preserved fossil snake from the Late Cretaceous of Brazil shows early ecological and brain shape disparity in the group.
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houssayecnrs.bsky.social @houssayecnrs.bsky.social · 20/07/2026
First PhD paper from Romain Cottereau, directly without his two PhD supervisors @val-fisch.bsky.social and me. Congrats Romain for this nice dissection paper on a giant paddle of humpback whale and on those of its relatives with a new tissue-illuminating technique!
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Matt Friedman @friedmanlab.bsky.social · 20/07/2026
New paper from @jakeberv.bsky.social harnesses a massive skeletal measurement dataset for passerines to show nested bursts in phenotypic evolution, many of which appear coincident with intervals of climate instability. www.nature.com/articles/s41...
Radial phylogenetic tree of passerine birds, with branches colored according to evolutionary rate. Color drawings of select species decorate the tips. A set of bivariate plots are shown as four panels below.
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Prof. Valentin Fischer @val-fisch.bsky.social · 20/07/2026
Slowly catching up with the sciences published by the lab over the first part of the summer. A thread!
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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
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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travis-park.bsky.social @travis-park.bsky.social · 16/07/2026
If you want an up-to-date summary of whale and dolphin evolution, have a read of my new review paper in @natrevbiodiv.nature.com! I’ve tried to cover as much research as possible in this, so apologies if I’ve missed you! doi.org/10.1038/s443...
doi.org
The evolution and diversification of Cetacea - Nature Reviews Biodiversity
Cetaceans are a highly diverse and enigmatic group of animals with a well-documented evolutionary history. This Review describes the macroevolutionary and palaeobiological history of Cetacea, from the...
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 15/07/2026
www.nature.com/articles/s44...
nature.com
The evolution and diversification of Cetacea - Nature Reviews Biodiversity
Cetaceans are a highly diverse and enigmatic group of animals with a well-documented evolutionary history. This Review describes the macroevolutionary and palaeobiological history of Cetacea, from the...
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Lene Liebe Delsett @leneliebedelsett.bsky.social · 03/07/2026
Big news and only 10 days left for abstract submission - it is not too late to join the ICHTHYOSAUR symposium @ipc7.bsky.social as we can now announce that @val-fisch.bsky.social will give an amazing keynote presentation🤩🤩
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 23/06/2026
I am thrilled that my dream project was funded by the #ERC @erc.europa.eu as a 5 year Advanced Grant! Final amount somewhere over €2M. I'll be advertising 2 postdocs (1 more empirical; one more theoretical), technician and research administrator in due time. erc.europa.eu/news-events/...
Screenshot of a segment from a spreadsheet listing the projects that won an ERC advanced grant, showing the acronym CROCOLOCOEVO next to the project title "The Evolution of Locomotion Across Land-Water Transitions in Crocodylomorpha"
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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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Gabriel Ugueto @serpenillus.bsky.social · 18/06/2026
The second episode of Surviving Earth premieres tonight on NBC! But before that I want to share with you more concept designs I did for various animals from last week’s episode. If you know me you can imagine how excited I was to design Triassic species for this show! #paleoart #sciart #conceptart
A collage of concept design I did for Dongosuchus, Cymbospondylus, Cyamodus and a hypothetical Proto Pterosaur
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Massimo (mirror) @rainmaker1973-m.bsky.social · 18/06/2026
Flying fish gliding above the surface of the water. Original post
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ContempraInn 🌹 @contemprainn.bsky.social · 17/06/2026
Icy mountains of PLUTO captured by NASA’s New Horizons probe after 9 years and a 3-billion-mile journey
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Matt Friedman @friedmanlab.bsky.social · 04/06/2026
Although Sanaa is wrapping up her PhD this next month, I feel like Qreiya-3 will be a rich source of projects as she continues this adventure. So proud of what she's done already, and eagerly anticipating what comes next. #OpenAccess paper here: www.science.org/doi/10.1126/...
science.org
Rise of modern marine fishes captured in an early Paleocene Lagerstätte
Remarkably modern marine fish assemblages were established in the tropics within 4 Myr of the K-Pg extinction.
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Matt Friedman @friedmanlab.bsky.social · 04/06/2026
Led by the incomparable Sanaa El-Sayed, a study out today in Science Advances throws open an important new window on marine fish diversity during the critical few million years following the K-Pg mass extinction. Below: artistic vision of the new fauna by Ian Baylatry.
Illustration of many fishes swimming in sunlit blue water.
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The Verge @theverge.com · 01/06/2026
The EU's wider rules, which kick in from February 18th, 2027, are simple: Users must be able to remove and replace batteries with basic tools, or specialized tools that are provided with the product for free, and compatible spare batteries must be sold for at least five years.
theverge.com
User-replaceable batteries are coming back in a big way
The Verge is about technology and how it makes us feel. Founded in 2011, we offer our audience everything from breaking news to reviews to award-winning features and investigations, on our site, in vi...
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Katie Collins @spissatella.bsky.social · 24/05/2026
Whoops my hand slipped
A synthwave/vaporwave style poster for fossil ammonite Nipponites - the background is an ombré of dark purple at the top down through magenta pink in the middle to dark purple again at the bottom. A 3D mesh model of Nipponites (an irregularly coiled, wiggling shape) in white is in the centre-left and a stylised sun made of horizontal lines in golden yellow is centre-right. Text is laid out like a tour poster for a band, and it reads: Nipponites 1904 Pacific Rim Tour, Turonian-Coniacian 93.9-86.3Ma, Hokkaido Japan Upper Yezo Group, Oregon USA Hornbrook Formation, Sakhalin Russia Naiba + Bykov Formations
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The Onion @theonion.com · 29/04/2026
Supreme Court Overturns ‘Right v. Wrong’ theonion.com/supreme-court-overturn…
Supreme Court Overturns ‘Right v. Wrong’
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Michael Clemens @mclem.org · 27/04/2026
The United States now has the most government restrictions on academic freedom of any high-income country. www.chemistryworld.com/news/academi... Raw data from @vdeminstitute.bsky.social —> academic-freedom-index.net/research/Aca...
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Pedro Godoy @pedrolgodoy.bsky.social · 17/04/2026
🚨 Out today: our Editorial in @jvertpaleo.bsky.social on an important issue in science - the reproducibility crisis in phylogenetic analyses. In it, we analyze several years of editorial data to ask a simple question: are things improving? www.tandfonline.com/doi/full/10....
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Alexis Rastier 🌿 @alexisrastier.bsky.social · 03/04/2026
#Paleobotany This #FossilFriday is dedicated to the Famennian fern-like plant Rhacophyton, a striking example of how reconstructing whole plants from fragmentary individuals remains challenging, even with thousands of specimens. Unraveling its architecture is also at the heart of my ongoing research
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houssayecnrs.bsky.social @houssayecnrs.bsky.social · 31/03/2026
New #GRAVIBONE paper from @rl-evobio.bsky.social showing how partial long bone analyses in 3DGM reveal a hidden modularity in the evolution of the sauropod bauplan from their bipedal cousins, with L. Partout & H. Mallison. onlinelibrary.wiley.com/doi/abs/10.1...
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Anne-Laure D 🌿 @aldpaleo.bsky.social · 30/03/2026
A Postdoctoral Research Fellowship on Mesozoic #Paleobotany and Ecophysiology is available at the University of Nottingham with Barry Lomax. jobs.nottingham.ac.uk/vacancy.aspx...
jobs.nottingham.ac.uk
Job Vacancy at the University of Nottingham: Research Fellow (Mesozoic Palaeobotany & ecophysiology) (Fixed term)
Applications are invited for a Research Fellow to join the University of Nottingham at the Sutton Bonington Campus working as part of a team to deliver a project awarded by Leverhulme Trust to understand plant performance and climate feedback...
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Dr John Clarke @jclarkepaleo.bsky.social · 30/03/2026
Postdoc in Macroevolution - Deadline April 12th - Join a team of Stuttgart botanists & myself to test drivers of Angiosperm diversification! Fully open process Submit cover letter, CV, 3 referees & publication list in a single PDF to postdoc-botany@smns-bw.de + 3 key papers (if possible) as PDF
naturkundemuseum-bw.de
Jobs | Staatliches Museum für Naturkunde Stuttgart
Offene Stellen
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Francesco Della Giustina @just-fre.bsky.social · 26/03/2026
New paper out with @val-fisch.bsky.social, @rboman.bsky.social, @narimanechatar.bsky.social and @palaeotheoryum.bsky.social 🎊 We used FEA to simulate bites in mosasaurids and polycotylids from the WIS to find clues about what they ate and how. Check it out here! doi.org/10.1111/pala...
doi.org
Distinct feeding biomechanics in Late Cretaceous marine reptiles from the Western Interior Seaway
Sympatry of numerous predatory marine reptiles appears to be the rule rather than the exception in many Mesozoic formations, implying that these lineages are likely to have evolved some form of ecolo....
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Narimane Chatar @narimanechatar.bsky.social · 26/03/2026
New paper out lead by @just-fre.bsky.social, with @rboman.bsky.social, @palaeotheoryum.bsky.social, and @val-fisch.bsky.social 🥳Using FEA, we studied the feeding behavior of 16 species of sympatric marine reptiles from the Western Interior Seaway 🦎 Check this out ➡️ doi.org/10.1111/pala...
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Prof. Valentin Fischer @val-fisch.bsky.social · 25/03/2026
New lab paper! We've applied fancy FEA to Cretaceous marine reptiles of the Western Interior Seaway. Lead by @just-fre.bsky.social, with @rboman.bsky.social, @narimanechatar.bsky.social, @palaeotheoryum.bsky.social, and me. onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com
Distinct feeding biomechanics in Late Cretaceous marine reptiles from the Western Interior Seaway
Sympatry of numerous predatory marine reptiles appears to be the rule rather than the exception in many Mesozoic formations, implying that these lineages are likely to have evolved some form of ecolo...
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Prof. Valentin Fischer @val-fisch.bsky.social · 24/03/2026
New lab paper, this time on phocid limb morphometrics! Lead by former EDDyLab postdoc Dr. Leonard Dewaele, with @narimanechatar.bsky.social, Prof. Mark Uhen, master student Jacques Klassen, and yours truly anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
anatomypubs.onlinelibrary.wiley.com
Long bone variability in true seals (Mammalia, Phocidae), with implications for understanding their fossil record
Historically, humeri and femora have been treated as diagnostic elements for fossil phocid (Carnivora, Pinnipedia, Phocidae) identification. This resulted in the naming of a plethora of extinct phoci...
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Professor John R. Hutchinson @johnrhutchinson.bsky.social · 06/03/2026
At the RVC we are grieving the death of the Structure & Motion Lab's creator, and stalwart comrade, Professor Alan Wilson FRS, from a plane crash in Namibia on Wednesday. He was a giant in comparative biomechanics and an amazing scientist. I'm still reeling. It is utterly shocking and deeply sad.
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Prof. Valentin Fischer @val-fisch.bsky.social · 03/03/2026
Who would have thought!
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