Alexis Rastier 🌿
@alexisrastier.bsky.social
PhD student in Devonian paleobotany @UniversiteLiege, Research assistant in Triassic paleobotany at the Swedish Museum of Natural History🌱🌲🌺🌿🌍
Reposted by Alexis Rastier 🌿
Huge congratulations @jeremywyman.bsky.social @instmolplantsci.bsky.social for publishing the results of your masters thesis @annbot.bsky.social
The work includes a new reconstruction of the Carboniferous isoetalean Oxroadia by the brilliant @palaeojules.bsky.social
academic.oup.com/aob/advance-...
The work includes a new reconstruction of the Carboniferous isoetalean Oxroadia by the brilliant @palaeojules.bsky.social
academic.oup.com/aob/advance-...
November 5, 2025 at 10:37 AM
Huge congratulations @jeremywyman.bsky.social @instmolplantsci.bsky.social for publishing the results of your masters thesis @annbot.bsky.social
The work includes a new reconstruction of the Carboniferous isoetalean Oxroadia by the brilliant @palaeojules.bsky.social
academic.oup.com/aob/advance-...
The work includes a new reconstruction of the Carboniferous isoetalean Oxroadia by the brilliant @palaeojules.bsky.social
academic.oup.com/aob/advance-...
Reposted by Alexis Rastier 🌿
🔥ADVANCE ACCESS🔥: Convergent evolution of the developmental anatomy of leaf abscission: evidence from the arboreous lycopsid Sigillaria
doi.org/10.1093/aob/...
doi.org/10.1093/aob/...
November 12, 2025 at 3:16 PM
🔥ADVANCE ACCESS🔥: Convergent evolution of the developmental anatomy of leaf abscission: evidence from the arboreous lycopsid Sigillaria
doi.org/10.1093/aob/...
doi.org/10.1093/aob/...
Reposted by Alexis Rastier 🌿
my new #sciart for @chistinesd.bsky.social: her research in @newphyt.bsky.social reveals arbuscular mycorrhizae in the stem of the early plant Aglaophyton from 407 million years ago, showing that fungal-plant symbioses are as old as the earliest soils. nph.onlinelibrary.wiley.com/doi/10.1111/...
November 13, 2025 at 9:18 PM
my new #sciart for @chistinesd.bsky.social: her research in @newphyt.bsky.social reveals arbuscular mycorrhizae in the stem of the early plant Aglaophyton from 407 million years ago, showing that fungal-plant symbioses are as old as the earliest soils. nph.onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Alexis Rastier 🌿
We have a new Dr in #paleobotany! Congratulations to @thibault-durieux.bsky.social who successfully passed his viva. It was a great journey & he made the advising job very easy for
@petermoonlight.bsky.social, Carla Harper and I. Big thanks to the examiners Jenny McElwain & @sandyheth.bsky.social!
@petermoonlight.bsky.social, Carla Harper and I. Big thanks to the examiners Jenny McElwain & @sandyheth.bsky.social!
November 14, 2025 at 9:50 AM
We have a new Dr in #paleobotany! Congratulations to @thibault-durieux.bsky.social who successfully passed his viva. It was a great journey & he made the advising job very easy for
@petermoonlight.bsky.social, Carla Harper and I. Big thanks to the examiners Jenny McElwain & @sandyheth.bsky.social!
@petermoonlight.bsky.social, Carla Harper and I. Big thanks to the examiners Jenny McElwain & @sandyheth.bsky.social!
Reposted by Alexis Rastier 🌿
C'est la 29e Réunion des Sciences de la Terre à Montpellier toute la semaine 🌐🌋🦕 Demain après-midi je parlerai du changement de végétation dans la zone tropicale fin Carbonifère-début Permien avec l'exemple des flores de Graissessac & Lodève (session 8.1)⛏️ 🌿 #paleobotany #geosciences #paleontology
October 27, 2025 at 7:17 AM
C'est la 29e Réunion des Sciences de la Terre à Montpellier toute la semaine 🌐🌋🦕 Demain après-midi je parlerai du changement de végétation dans la zone tropicale fin Carbonifère-début Permien avec l'exemple des flores de Graissessac & Lodève (session 8.1)⛏️ 🌿 #paleobotany #geosciences #paleontology
Reposted by Alexis Rastier 🌿
Real pleasure to be invited to speak at the British Pteridological Society meeting today.
Brilliant mix of talks spanning evolution, conservation and botanical collections.
And always great to have a tour of the wonderful @thebotanics.bsky.social collections! 🌿
Brilliant mix of talks spanning evolution, conservation and botanical collections.
And always great to have a tour of the wonderful @thebotanics.bsky.social collections! 🌿
October 25, 2025 at 3:19 PM
Real pleasure to be invited to speak at the British Pteridological Society meeting today.
Brilliant mix of talks spanning evolution, conservation and botanical collections.
And always great to have a tour of the wonderful @thebotanics.bsky.social collections! 🌿
Brilliant mix of talks spanning evolution, conservation and botanical collections.
And always great to have a tour of the wonderful @thebotanics.bsky.social collections! 🌿
Reposted by Alexis Rastier 🌿
Excited to share our research on the evolution of fossil forests from the Devonian to Jurassic! By analyzing 38 global fossil forests, we explored key parameters to better understand how these fossil forests developed over time.
doi.org/10.1016/j.ea...
doi.org/10.1016/j.ea...
October 12, 2025 at 1:16 PM
Excited to share our research on the evolution of fossil forests from the Devonian to Jurassic! By analyzing 38 global fossil forests, we explored key parameters to better understand how these fossil forests developed over time.
doi.org/10.1016/j.ea...
doi.org/10.1016/j.ea...
Reposted by Alexis Rastier 🌿
🌵Deadline alert! #Botany2026 Symposia & Colloquia Proposals are due October 16. Help shape the scientific program for our Tucson meeting, themed Biodiversity at the Boundaries!
Submit your proposal and get details here: mailchi.mp/botany.org/b...
or here: www.botanyconference.org
#iamabotanist
Submit your proposal and get details here: mailchi.mp/botany.org/b...
or here: www.botanyconference.org
#iamabotanist
October 2, 2025 at 8:33 PM
🌵Deadline alert! #Botany2026 Symposia & Colloquia Proposals are due October 16. Help shape the scientific program for our Tucson meeting, themed Biodiversity at the Boundaries!
Submit your proposal and get details here: mailchi.mp/botany.org/b...
or here: www.botanyconference.org
#iamabotanist
Submit your proposal and get details here: mailchi.mp/botany.org/b...
or here: www.botanyconference.org
#iamabotanist
Reposted by Alexis Rastier 🌿
✨ Paper spotlight ✨
(🧵 1/6) Leaf evolution: integrating phylogenetics, developmental dynamics, and genetic insights across land plants
nph.onlinelibrary.wiley.com/doi/10.1111/...
(🧵 1/6) Leaf evolution: integrating phylogenetics, developmental dynamics, and genetic insights across land plants
nph.onlinelibrary.wiley.com/doi/10.1111/...
October 1, 2025 at 10:01 AM
✨ Paper spotlight ✨
(🧵 1/6) Leaf evolution: integrating phylogenetics, developmental dynamics, and genetic insights across land plants
nph.onlinelibrary.wiley.com/doi/10.1111/...
(🧵 1/6) Leaf evolution: integrating phylogenetics, developmental dynamics, and genetic insights across land plants
nph.onlinelibrary.wiley.com/doi/10.1111/...
Reposted by Alexis Rastier 🌿
And some of the fossils have arrived in Montpellier just in time for #FossilFriday 🎉
Most of them are stems with their tissues and cells preserved in 3D. They will be prepared as thin-sections & observed under the microscope to find out what plants they belonged to 🌿⛏️🔬 #paleobotany
Most of them are stems with their tissues and cells preserved in 3D. They will be prepared as thin-sections & observed under the microscope to find out what plants they belonged to 🌿⛏️🔬 #paleobotany
September 19, 2025 at 3:41 PM
And some of the fossils have arrived in Montpellier just in time for #FossilFriday 🎉
Most of them are stems with their tissues and cells preserved in 3D. They will be prepared as thin-sections & observed under the microscope to find out what plants they belonged to 🌿⛏️🔬 #paleobotany
Most of them are stems with their tissues and cells preserved in 3D. They will be prepared as thin-sections & observed under the microscope to find out what plants they belonged to 🌿⛏️🔬 #paleobotany
Reposted by Alexis Rastier 🌿
This approximately 15m-long fossil tree trunk from the Angeac-Charente bonebed of Early Cretaceous France is insane.
#paleontology #paleobotany #botany
#paleontology #paleobotany #botany
September 21, 2025 at 11:51 PM
This approximately 15m-long fossil tree trunk from the Angeac-Charente bonebed of Early Cretaceous France is insane.
#paleontology #paleobotany #botany
#paleontology #paleobotany #botany
In May and Jully 2025, I presented some new results from my PhD dedicated to the Latest Famennian flora of Euramerica🌿 in the Swedish Museum of Natural history and at Agora Paleobotanica in Paris. At Agora, I was awarded the Boureau Prize for the best oral presentation. 😄🏆 #Paleobotany #Devonian
September 2, 2025 at 7:22 AM
In May and Jully 2025, I presented some new results from my PhD dedicated to the Latest Famennian flora of Euramerica🌿 in the Swedish Museum of Natural history and at Agora Paleobotanica in Paris. At Agora, I was awarded the Boureau Prize for the best oral presentation. 😄🏆 #Paleobotany #Devonian
Reposted by Alexis Rastier 🌿
Fossil swamp-forest plants at Brymbo, Wrexham - where 300 million years ago giant lycopods (clubmosses) like Lepidodendron towered to over 120ft tall with massive horsetails like Calamites! Amazing to be able to see these at Stori Brymbo.
August 4, 2025 at 7:45 PM
Fossil swamp-forest plants at Brymbo, Wrexham - where 300 million years ago giant lycopods (clubmosses) like Lepidodendron towered to over 120ft tall with massive horsetails like Calamites! Amazing to be able to see these at Stori Brymbo.
Reposted by Alexis Rastier 🌿
Today's fossil is a very tiny branching stem with preserved tissues - check the scale bar! 🌿⛏️🔬 It belonged to a lycopsid (= a clubmoss) that grew in what is now southern France during the early Carboniferous, about 350 million years ago #paleobotany #FossilFriday
Ref: doi.org/10.1016/0034...
Ref: doi.org/10.1016/0034...
August 8, 2025 at 9:15 AM
Today's fossil is a very tiny branching stem with preserved tissues - check the scale bar! 🌿⛏️🔬 It belonged to a lycopsid (= a clubmoss) that grew in what is now southern France during the early Carboniferous, about 350 million years ago #paleobotany #FossilFriday
Ref: doi.org/10.1016/0034...
Ref: doi.org/10.1016/0034...
Reposted by Alexis Rastier 🌿
Happy #FossilFriday and #FernFriday ! This beautiful fossil leaf belongs to a #fern that was growing in what is now southern France during the late Carboniferous, about 300 million years ago 🌿⛏️
#paleobotany #fossil #botany
#paleobotany #fossil #botany
August 1, 2025 at 10:00 PM
Happy #FossilFriday and #FernFriday ! This beautiful fossil leaf belongs to a #fern that was growing in what is now southern France during the late Carboniferous, about 300 million years ago 🌿⛏️
#paleobotany #fossil #botany
#paleobotany #fossil #botany
Reposted by Alexis Rastier 🌿
Fieldtrip day 1: today we visited not 1 but 2 sites with fossil plants 🌿⛏️🤩 Here's a nice Stigmaria, the rooting structure of a lycopsid tree from the latest Carboniferous, a little over 300 million year ago. (and yes it is extremely warm 🌡️)
June 28, 2025 at 4:47 PM
Fieldtrip day 1: today we visited not 1 but 2 sites with fossil plants 🌿⛏️🤩 Here's a nice Stigmaria, the rooting structure of a lycopsid tree from the latest Carboniferous, a little over 300 million year ago. (and yes it is extremely warm 🌡️)
Reposted by Alexis Rastier 🌿
Finally plants for #3DThursday!🌽 A maize root tip, imaged using #microCT, from the Topp Roots Lab.
🔬: @zeiss-microscopy.bsky.social Versa 520 XRM
🥼: Keith Duncan @cygnusplantxray.bsky.social
🏛️: Danforth Center @danforthcenter.bsky.social
📝: academic.oup.com/plphys/artic...
🎬: syGlass.io #syGlass
🔬: @zeiss-microscopy.bsky.social Versa 520 XRM
🥼: Keith Duncan @cygnusplantxray.bsky.social
🏛️: Danforth Center @danforthcenter.bsky.social
📝: academic.oup.com/plphys/artic...
🎬: syGlass.io #syGlass
June 26, 2025 at 4:17 PM
Finally plants for #3DThursday!🌽 A maize root tip, imaged using #microCT, from the Topp Roots Lab.
🔬: @zeiss-microscopy.bsky.social Versa 520 XRM
🥼: Keith Duncan @cygnusplantxray.bsky.social
🏛️: Danforth Center @danforthcenter.bsky.social
📝: academic.oup.com/plphys/artic...
🎬: syGlass.io #syGlass
🔬: @zeiss-microscopy.bsky.social Versa 520 XRM
🥼: Keith Duncan @cygnusplantxray.bsky.social
🏛️: Danforth Center @danforthcenter.bsky.social
📝: academic.oup.com/plphys/artic...
🎬: syGlass.io #syGlass
Reposted by Alexis Rastier 🌿
This one is a section in a Sphenophyllum stem with 3d preserved tissues. It's from the same area (Hérault department) but early Carboniferous in age so about 50 million years older 🌿⛏️
Open access reference: doi.org/10.5252/geod...
2/3 #paleobotany
Open access reference: doi.org/10.5252/geod...
2/3 #paleobotany
June 13, 2025 at 7:09 PM
This one is a section in a Sphenophyllum stem with 3d preserved tissues. It's from the same area (Hérault department) but early Carboniferous in age so about 50 million years older 🌿⛏️
Open access reference: doi.org/10.5252/geod...
2/3 #paleobotany
Open access reference: doi.org/10.5252/geod...
2/3 #paleobotany
Reposted by Alexis Rastier 🌿
June 19, 2025 at 1:30 PM
Reposted by Alexis Rastier 🌿
Pour les francophones un petit article sur la terrestrialisation des plantes pour ce #FossilFriday 🌿⛏️ lejournal.cnrs.fr/articles/pla... #paleobotany #fossil
Et les plantes colonisèrent la terre ferme…
Il y a un demi-milliard d’années, les plantes, encore aquatiques, partaient à la conquête des continents. Une transition qui a métamorphosé la Terre et son atmosphère, ouvrant la voie aux vertébrés te...
lejournal.cnrs.fr
May 16, 2025 at 6:35 AM
Pour les francophones un petit article sur la terrestrialisation des plantes pour ce #FossilFriday 🌿⛏️ lejournal.cnrs.fr/articles/pla... #paleobotany #fossil
Reposted by Alexis Rastier 🌿
Prep for Lyme Regis Fossil Festival is almost finished!!!
All I have left are a few prints to print, stickers to cut, and a workshop intro spiel to fine-tune! Hope to see y'all there next weekend!!!
#paleobotany #paleontology #paleoart #fossilfestival #stickers #merch #dinosaurs #plants
All I have left are a few prints to print, stickers to cut, and a workshop intro spiel to fine-tune! Hope to see y'all there next weekend!!!
#paleobotany #paleontology #paleoart #fossilfestival #stickers #merch #dinosaurs #plants
June 8, 2025 at 2:30 PM
Prep for Lyme Regis Fossil Festival is almost finished!!!
All I have left are a few prints to print, stickers to cut, and a workshop intro spiel to fine-tune! Hope to see y'all there next weekend!!!
#paleobotany #paleontology #paleoart #fossilfestival #stickers #merch #dinosaurs #plants
All I have left are a few prints to print, stickers to cut, and a workshop intro spiel to fine-tune! Hope to see y'all there next weekend!!!
#paleobotany #paleontology #paleoart #fossilfestival #stickers #merch #dinosaurs #plants
Reposted by Alexis Rastier 🌿
Shameless self-promotion continues...🙃 You might find this #fern book in your local bookstores! mailchi.mp/btiscience/f...
May 30, 2025 at 5:03 PM
Shameless self-promotion continues...🙃 You might find this #fern book in your local bookstores! mailchi.mp/btiscience/f...
Reposted by Alexis Rastier 🌿
Heading out to a park this #FossilFriday?
Be sure to visit Horton Park in Bradford, where you can see one of three huge fossil trees!
These Carboniferous giants were excavated from Clayton in the late 19th Century and placed on public display to "inspire future generations of geologists".
Be sure to visit Horton Park in Bradford, where you can see one of three huge fossil trees!
These Carboniferous giants were excavated from Clayton in the late 19th Century and placed on public display to "inspire future generations of geologists".
May 16, 2025 at 6:37 PM
Heading out to a park this #FossilFriday?
Be sure to visit Horton Park in Bradford, where you can see one of three huge fossil trees!
These Carboniferous giants were excavated from Clayton in the late 19th Century and placed on public display to "inspire future generations of geologists".
Be sure to visit Horton Park in Bradford, where you can see one of three huge fossil trees!
These Carboniferous giants were excavated from Clayton in the late 19th Century and placed on public display to "inspire future generations of geologists".