Rémi Lefebvre
@rl-evobio.bsky.social
MSCA/UKRI Postdoctoral Fellow at the Royal Veterinary College, UK. I'm interested in evolutionary (paleo)biology, especially working on sauropodomorphs
Reposted by Rémi Lefebvre
#DAWNDINOS paper! We built a 3D musculoskeletal model of ~1 kg Triassic pseudosuchian archosaur Gracilisuchus. Forelimbs were a challenge. Nice articulations of ribs, vertebrae & osteoderms made a good torso & neck. Probably quadrupedal, plantigrade & not fully erect limbs. doi.org/10.1111/joa....
Hindlimb functional morphology and locomotor biomechanics of the small Late Triassic pseudosuchian reptile Gracilisuchus stipanicicorum (Archosauria: Gracilisuchidae)
A three-dimensional biomechanical model of the musculoskeletal system is used to analyse the potential locomotor functions of the small (~1 kg) Late Triassic archosaurian reptile Gracilisuchus stipan...
doi.org
November 20, 2025 at 9:33 AM
#DAWNDINOS paper! We built a 3D musculoskeletal model of ~1 kg Triassic pseudosuchian archosaur Gracilisuchus. Forelimbs were a challenge. Nice articulations of ribs, vertebrae & osteoderms made a good torso & neck. Probably quadrupedal, plantigrade & not fully erect limbs. doi.org/10.1111/joa....
Reposted by Rémi Lefebvre
⚠️ Sad news for science: Philippe Taquet, the gentleman of French paleontology, passed away on Sunday, November 16.
@cr2p.bsky.social @mnhn.fr @recherche.mnhn.fr @academiesciences.bsky.social
@cr2p.bsky.social @mnhn.fr @recherche.mnhn.fr @academiesciences.bsky.social
November 17, 2025 at 12:37 PM
⚠️ Sad news for science: Philippe Taquet, the gentleman of French paleontology, passed away on Sunday, November 16.
@cr2p.bsky.social @mnhn.fr @recherche.mnhn.fr @academiesciences.bsky.social
@cr2p.bsky.social @mnhn.fr @recherche.mnhn.fr @academiesciences.bsky.social
Reposted by Rémi Lefebvre
De mon côté on m'a confié le micro pour la chronique sciences.
Cette fois j'ai décidé de parler du fonctionnement scandaleux de l'édition scientifique, peu connu en dehors des labos : www.youtube.com/watch?v=Yg2C...
Mais 4 minutes c'est court, alors j'ajoute quelques ressources ci-dessous !
Cette fois j'ai décidé de parler du fonctionnement scandaleux de l'édition scientifique, peu connu en dehors des labos : www.youtube.com/watch?v=Yg2C...
Mais 4 minutes c'est court, alors j'ajoute quelques ressources ci-dessous !
Le beurre, l’argent du beurre et le c*l des chercheurs- La chronique de Tania Louis dans La dernière
YouTube video by Radio Nova
www.youtube.com
November 12, 2025 at 6:37 PM
De mon côté on m'a confié le micro pour la chronique sciences.
Cette fois j'ai décidé de parler du fonctionnement scandaleux de l'édition scientifique, peu connu en dehors des labos : www.youtube.com/watch?v=Yg2C...
Mais 4 minutes c'est court, alors j'ajoute quelques ressources ci-dessous !
Cette fois j'ai décidé de parler du fonctionnement scandaleux de l'édition scientifique, peu connu en dehors des labos : www.youtube.com/watch?v=Yg2C...
Mais 4 minutes c'est court, alors j'ajoute quelques ressources ci-dessous !
Reposted by Rémi Lefebvre
Philippe Taquet, chasseur de dinosaures et ancien directeur du Muséum national d’histoire naturelle, est mort
Philippe Taquet, chasseur de dinosaures et ancien directeur du Muséum national d’histoire naturelle, est mort
Destiné à reprendre l’industrie textile familiale, cet esprit libre a préféré la vie de chercheur d’os, découvrant plusieurs espèces d’animaux disparus, tout en menant une carrière institutionnelle de premier plan. Il s’est éteint le 16 novembre, à 85 ans.
www.lemonde.fr
November 17, 2025 at 10:55 AM
Philippe Taquet, chasseur de dinosaures et ancien directeur du Muséum national d’histoire naturelle, est mort
Reposted by Rémi Lefebvre
RDV à 16H pour écouter @houssayecnrs.bsky.social de @mecadev.bsky.social et Guillaume Lecointre de l'@isyeb.mnhn.fr sur la paléo-bioinspiration
[RDV 16h !] On connaissait déjà la “Bio-inspiration”, à savoir l’innovation technologique adossée à l’étude du monde vivant mais qu’est-ce que la "paléo-bio-inspiration" ? Qu'ont à nous apprendre les animaux disparus ?
avec Guillaume Lecointre et Alexandra Houssaye #ScienceCQFD
avec Guillaume Lecointre et Alexandra Houssaye #ScienceCQFD
Paléo-bioinspiration : l'innovation, c'est fossile
On connaissait déjà la “Bio-inspiration”, à savoir l’innovation technologique adossée à l’étude du monde vivant. Peut-on étendre cette démarche aux espèces éteintes, que l’on connaît à travers leur fo...
www.radiofrance.fr
November 6, 2025 at 12:59 PM
RDV à 16H pour écouter @houssayecnrs.bsky.social de @mecadev.bsky.social et Guillaume Lecointre de l'@isyeb.mnhn.fr sur la paléo-bioinspiration
Reposted by Rémi Lefebvre
Analysis of 985(!!) baboon skulls' CT scan data from MorphoSource shows that >18% have slice spacing errors that propagate to downstream analyses-- an important cautionary tale on checking CT metadata vs. errors, and a goliath effort: peerj.com/articles/201...
Easier said than done: unexpected hurdles to preparing ∼1,000 cranial CT scans for data collection from an online digital repository
Background As science becomes more open and accessible, researchers are increasingly encouraged—and sometimes required—to share their digital data on public repositories. While this promotes transpare...
peerj.com
October 27, 2025 at 7:40 AM
Analysis of 985(!!) baboon skulls' CT scan data from MorphoSource shows that >18% have slice spacing errors that propagate to downstream analyses-- an important cautionary tale on checking CT metadata vs. errors, and a goliath effort: peerj.com/articles/201...
Reposted by Rémi Lefebvre
New paper on crocodylian locomotor evolution led by Masaya Iijima, w/Richard Blob & me!
More erect hindlimb postures help extant gators support their weight (esp. at ankle), & how these mechanics constrained giant Deinosuchus to a slow walk at best!
The paper-- www.science.org/doi/10.1126/...
More erect hindlimb postures help extant gators support their weight (esp. at ankle), & how these mechanics constrained giant Deinosuchus to a slow walk at best!
The paper-- www.science.org/doi/10.1126/...
Biomechanical simulations of hindlimb function in Alligator provide insights into postural shifts and body size evolution
Locomotor simulations in alligators reveal that transitions to erect limb postures facilitate the evolution of larger body sizes.
www.science.org
October 22, 2025 at 6:40 PM
New paper on crocodylian locomotor evolution led by Masaya Iijima, w/Richard Blob & me!
More erect hindlimb postures help extant gators support their weight (esp. at ankle), & how these mechanics constrained giant Deinosuchus to a slow walk at best!
The paper-- www.science.org/doi/10.1126/...
More erect hindlimb postures help extant gators support their weight (esp. at ankle), & how these mechanics constrained giant Deinosuchus to a slow walk at best!
The paper-- www.science.org/doi/10.1126/...
Reposted by Rémi Lefebvre
New bird paper led by the brilliant and talented Andrew Orkney! 🐣
We show that greater parental care is linked to greater evolutionary flexibility in how birds fly 🦅
We show that greater parental care is linked to greater evolutionary flexibility in how birds fly 🦅
Great expectations: altricial developmental strategies are associated with more flexible evolution of limb skeleton proportions in birds #ProcB #OpenAccess #Developmental Biology #Evolution royalsocietypublishing.org/doi/10.1098/...
October 9, 2025 at 12:39 PM
New bird paper led by the brilliant and talented Andrew Orkney! 🐣
We show that greater parental care is linked to greater evolutionary flexibility in how birds fly 🦅
We show that greater parental care is linked to greater evolutionary flexibility in how birds fly 🦅
Reposted by Rémi Lefebvre
#paleoctober2025 day 9 : Protobalanus spinicoronatus !
Despite its name, this animal is a devonian mollusk, more specifically a basal polyplacophoran. You may know its current day relatives as little criters on the beaches called "chitons" (that are not slugs with shells nor crustaceans).
Despite its name, this animal is a devonian mollusk, more specifically a basal polyplacophoran. You may know its current day relatives as little criters on the beaches called "chitons" (that are not slugs with shells nor crustaceans).
October 9, 2025 at 9:42 AM
#paleoctober2025 day 9 : Protobalanus spinicoronatus !
Despite its name, this animal is a devonian mollusk, more specifically a basal polyplacophoran. You may know its current day relatives as little criters on the beaches called "chitons" (that are not slugs with shells nor crustaceans).
Despite its name, this animal is a devonian mollusk, more specifically a basal polyplacophoran. You may know its current day relatives as little criters on the beaches called "chitons" (that are not slugs with shells nor crustaceans).
Reposted by Rémi Lefebvre
To a certain amount, you can estimate the angle of the ankle joint (mean angle during stance phase) of some land mammals by measuring the angle of their tibial long axis vs. calcaneal tuber long axis, and that could be handy:
peerj.com/articles/200...
peerj.com/articles/200...
Estimating ankle joint angle from skeletal geometry: a mechanical model of the calcaneal lever in terrestrial mammals
Background The ankle joint angle, typically measured between the tibia and metatarsus, shows only a small range of movement during the stance phase and remains relatively constant within species, but ...
peerj.com
September 29, 2025 at 3:39 PM
To a certain amount, you can estimate the angle of the ankle joint (mean angle during stance phase) of some land mammals by measuring the angle of their tibial long axis vs. calcaneal tuber long axis, and that could be handy:
peerj.com/articles/200...
peerj.com/articles/200...
Reposted by Rémi Lefebvre
PhD position available at the Museum für Naturkunde in Berlin on avialan ontogeny (birds and their closest non-avian dinosaur relatives)!
jobs.museumfuernaturkunde.berlin/jobposting/e...
jobs.museumfuernaturkunde.berlin/jobposting/e...
42/2025 Research Associate with the goal of a doctorate (f/m/d)
jobs.museumfuernaturkunde.berlin
September 30, 2025 at 9:11 AM
PhD position available at the Museum für Naturkunde in Berlin on avialan ontogeny (birds and their closest non-avian dinosaur relatives)!
jobs.museumfuernaturkunde.berlin/jobposting/e...
jobs.museumfuernaturkunde.berlin/jobposting/e...
Reposted by Rémi Lefebvre
Hello, microanatomy &/or salamander enthusiasts!
If you’re a first-year master’s student, I might have an exciting internship for you on the microanatomy of two salamanders sp., with already great results on the humerus.
What: Zeugopod microanatomy
Where: SMNS
Contact: morgan.proust@smns-bw.de
If you’re a first-year master’s student, I might have an exciting internship for you on the microanatomy of two salamanders sp., with already great results on the humerus.
What: Zeugopod microanatomy
Where: SMNS
Contact: morgan.proust@smns-bw.de
September 26, 2025 at 3:16 PM
Hello, microanatomy &/or salamander enthusiasts!
If you’re a first-year master’s student, I might have an exciting internship for you on the microanatomy of two salamanders sp., with already great results on the humerus.
What: Zeugopod microanatomy
Where: SMNS
Contact: morgan.proust@smns-bw.de
If you’re a first-year master’s student, I might have an exciting internship for you on the microanatomy of two salamanders sp., with already great results on the humerus.
What: Zeugopod microanatomy
Where: SMNS
Contact: morgan.proust@smns-bw.de
Reposted by Rémi Lefebvre
New paper led by @es-ucl.bsky.social PhD student Samantha Beeston (with @profpaulbarrett.bsky.social + others) on the evolution of postcranial pneumaticity in early sauropodomorph dinosaurs + its likely independent acquisition from that of theropods & pterosauromorphs: doi.org/10.1111/joa....
September 26, 2025 at 8:40 AM
New paper led by @es-ucl.bsky.social PhD student Samantha Beeston (with @profpaulbarrett.bsky.social + others) on the evolution of postcranial pneumaticity in early sauropodomorph dinosaurs + its likely independent acquisition from that of theropods & pterosauromorphs: doi.org/10.1111/joa....
Reposted by Rémi Lefebvre
I get that the news cycle is packed right now, but I just heard from a colleague at the Smithsonian that this is fully a GIANT SQUID BEING EATEN BY A SPERM WHALE and it’s possibly the first ever confirmed video according to a friend at NOAA
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
September 24, 2025 at 8:30 PM
I get that the news cycle is packed right now, but I just heard from a colleague at the Smithsonian that this is fully a GIANT SQUID BEING EATEN BY A SPERM WHALE and it’s possibly the first ever confirmed video according to a friend at NOAA
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
10 YEAR OLD ME IS LOSING HER MIND (a thread 🧵)
Reposted by Rémi Lefebvre
"After the fall of the Roman Empire, elephants virtually disappeared from Western Europe. Since there was no real knowledge of how the animal looked, illustrators had to rely on oral and written transmissions to morphologically reconstruct the elephant" www.uliwestphal.de/elephas-anth...
September 24, 2025 at 7:00 AM
"After the fall of the Roman Empire, elephants virtually disappeared from Western Europe. Since there was no real knowledge of how the animal looked, illustrators had to rely on oral and written transmissions to morphologically reconstruct the elephant" www.uliwestphal.de/elephas-anth...
Reposted by Rémi Lefebvre
JOBS JOBS JOBS! Stony Brook are advertising two assistant professorships in vertebrate palaeo/evolution, one focused on (in the words of the SVP programme) NOT DINOSAURS and the other on evolutionary neurology:
apply.interfolio.com/172502
apply.interfolio.com/172517
apply.interfolio.com/172502
apply.interfolio.com/172517
Apply - Interfolio
{{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
apply.interfolio.com
September 18, 2025 at 7:06 AM
JOBS JOBS JOBS! Stony Brook are advertising two assistant professorships in vertebrate palaeo/evolution, one focused on (in the words of the SVP programme) NOT DINOSAURS and the other on evolutionary neurology:
apply.interfolio.com/172502
apply.interfolio.com/172517
apply.interfolio.com/172502
apply.interfolio.com/172517
Reposted by Rémi Lefebvre
Quelle est la démarche des sections face aux questions relatives à la parité ?
Un document de synthèse rédigé par les référents parité des sections CoNRS @cnrs.fr de la mandature 2021-2025.
www.cnrs.fr/comitenation...
Un document de synthèse rédigé par les référents parité des sections CoNRS @cnrs.fr de la mandature 2021-2025.
www.cnrs.fr/comitenation...
September 17, 2025 at 3:00 PM
Quelle est la démarche des sections face aux questions relatives à la parité ?
Un document de synthèse rédigé par les référents parité des sections CoNRS @cnrs.fr de la mandature 2021-2025.
www.cnrs.fr/comitenation...
Un document de synthèse rédigé par les référents parité des sections CoNRS @cnrs.fr de la mandature 2021-2025.
www.cnrs.fr/comitenation...
Reposted by Rémi Lefebvre
R.I.P. Mark Norell. One of the most memorable and distinct characters in paleontology. When he said something, it might be totally outrageous, brilliant, or something else, but it always was interesting. He had a curmudgeonly sense of humor and a winning smile. Mark was very kind to me. RIP.
September 9, 2025 at 3:28 PM
R.I.P. Mark Norell. One of the most memorable and distinct characters in paleontology. When he said something, it might be totally outrageous, brilliant, or something else, but it always was interesting. He had a curmudgeonly sense of humor and a winning smile. Mark was very kind to me. RIP.
Reposted by Rémi Lefebvre
We lost Mark Norell today. Dinosaur hunter extraordinaire. The coolest dude alive. My PhD supervisor.
Wherever you are, raise a glass of your favorite lager or single malt, as it is what Mark would want.
Wherever you are, raise a glass of your favorite lager or single malt, as it is what Mark would want.
September 9, 2025 at 4:36 PM
We lost Mark Norell today. Dinosaur hunter extraordinaire. The coolest dude alive. My PhD supervisor.
Wherever you are, raise a glass of your favorite lager or single malt, as it is what Mark would want.
Wherever you are, raise a glass of your favorite lager or single malt, as it is what Mark would want.
Reposted by Rémi Lefebvre
Fully funded PhD position available at
@univmalaga.bsky.social 👩🎓👨🎓 focusing on the evolution of the vertebral column in crocodylomorphs 🐊under the supervision of @bortxaf.bsky.social & @albertomartinserra.bsky.social
Application deadline: Sep 30 🚨
@univmalaga.bsky.social 👩🎓👨🎓 focusing on the evolution of the vertebral column in crocodylomorphs 🐊under the supervision of @bortxaf.bsky.social & @albertomartinserra.bsky.social
Application deadline: Sep 30 🚨
September 8, 2025 at 6:05 PM
Fully funded PhD position available at
@univmalaga.bsky.social 👩🎓👨🎓 focusing on the evolution of the vertebral column in crocodylomorphs 🐊under the supervision of @bortxaf.bsky.social & @albertomartinserra.bsky.social
Application deadline: Sep 30 🚨
@univmalaga.bsky.social 👩🎓👨🎓 focusing on the evolution of the vertebral column in crocodylomorphs 🐊under the supervision of @bortxaf.bsky.social & @albertomartinserra.bsky.social
Application deadline: Sep 30 🚨
Reposted by Rémi Lefebvre
Kinematic and *multi-force-plate* analysis of walking in giant pandas!
Quite a technical achievement in biomechanics, and certainly cute as all hell.
Scientifically, no shocking findings but it's a useful study with lots of data. 18 pandas (6 = juvenile), 120 trials
link.springer.com/article/10.1...
Quite a technical achievement in biomechanics, and certainly cute as all hell.
Scientifically, no shocking findings but it's a useful study with lots of data. 18 pandas (6 = juvenile), 120 trials
link.springer.com/article/10.1...
September 8, 2025 at 3:21 PM
Kinematic and *multi-force-plate* analysis of walking in giant pandas!
Quite a technical achievement in biomechanics, and certainly cute as all hell.
Scientifically, no shocking findings but it's a useful study with lots of data. 18 pandas (6 = juvenile), 120 trials
link.springer.com/article/10.1...
Quite a technical achievement in biomechanics, and certainly cute as all hell.
Scientifically, no shocking findings but it's a useful study with lots of data. 18 pandas (6 = juvenile), 120 trials
link.springer.com/article/10.1...
Reposted by Rémi Lefebvre
Mindblowing research out of the wonderful @isemevol.bsky.social (where I'm delighed to be based for the next three months).
Opening line: "Living organisms are assumed to produce same-species offspring [1,2]. Here, we report a shift from this norm".
1. Darwin (1859)
2. Mayr (1942).
Opening line: "Living organisms are assumed to produce same-species offspring [1,2]. Here, we report a shift from this norm".
1. Darwin (1859)
2. Mayr (1942).
September 3, 2025 at 6:50 PM
Mindblowing research out of the wonderful @isemevol.bsky.social (where I'm delighed to be based for the next three months).
Opening line: "Living organisms are assumed to produce same-species offspring [1,2]. Here, we report a shift from this norm".
1. Darwin (1859)
2. Mayr (1942).
Opening line: "Living organisms are assumed to produce same-species offspring [1,2]. Here, we report a shift from this norm".
1. Darwin (1859)
2. Mayr (1942).
Reposted by Rémi Lefebvre
I am very, very happy to welcome @iscavezzoni.bsky.social to my team at RVC as my 2nd current Marie Skłodowska-Curie Fellow, along with @rl-evobio.bsky.social! Dr. Scavezzoni will be blazing a new trail studying the evolutionary biomechanics of locomotion in thalattosuchian and dyrosaurid crocs!
September 4, 2025 at 8:35 AM
I am very, very happy to welcome @iscavezzoni.bsky.social to my team at RVC as my 2nd current Marie Skłodowska-Curie Fellow, along with @rl-evobio.bsky.social! Dr. Scavezzoni will be blazing a new trail studying the evolutionary biomechanics of locomotion in thalattosuchian and dyrosaurid crocs!
Reposted by Rémi Lefebvre
I'm recruiting a PhD student to join the lab at @gtsciences.bsky.social in Fall 2026! Broad taxonomic and topical freedom under the umbrella of vertebrate joint form and function. Information here: www.manafzadeh.com – please share 🦴🩻
✨Some news✨: after finishing my postdoc, I’ll be starting my lab as an Assistant Professor at Georgia Tech. Join us in Atlanta to study how joints work and where they come from!
September 2, 2025 at 4:07 PM
I'm recruiting a PhD student to join the lab at @gtsciences.bsky.social in Fall 2026! Broad taxonomic and topical freedom under the umbrella of vertebrate joint form and function. Information here: www.manafzadeh.com – please share 🦴🩻
Reposted by Rémi Lefebvre
🚨 Hiring! We are looking for a postdoctoral researcher with expertise in computational fluid dynamics and structural simulations to investigate biomechanics and mechanosensory feedback in insect flight.
Extreme agility ✔️
Morphological computing ✔️
Meshes! ✔️
jobs.rvc.ac.uk/vacancy.aspx...
Extreme agility ✔️
Morphological computing ✔️
Meshes! ✔️
jobs.rvc.ac.uk/vacancy.aspx...
a close up of a fly 's head with a blurred background .
ALT: a close up of a fly 's head with a blurred background .
media.tenor.com
September 2, 2025 at 4:22 PM
🚨 Hiring! We are looking for a postdoctoral researcher with expertise in computational fluid dynamics and structural simulations to investigate biomechanics and mechanosensory feedback in insect flight.
Extreme agility ✔️
Morphological computing ✔️
Meshes! ✔️
jobs.rvc.ac.uk/vacancy.aspx...
Extreme agility ✔️
Morphological computing ✔️
Meshes! ✔️
jobs.rvc.ac.uk/vacancy.aspx...