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Alexis Rastier - Sigillaria 🌴 Profile
Alexis Rastier - Sigillaria 🌴

@AlexisRastier

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PhD student in Devonian paleobotany in the #EDDyLab at the @UniversiteLiege, Research assistant in the Swedish Museum of Natural History🌱🌲🌺🌿🌍

Lullin, France
Joined February 2018
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@AlexisRastier
Alexis Rastier - Sigillaria 🌴
1 year
For this #FossilFriday, I have some internal casts of a 360 million year old arborescent lycophyte with no further taxonomical assignment yet. It thrived in a high energy environment, often disturbed by flooding and storms that formed the conglomerates. #Palaeobotany #Paleobotany
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@AlexisRastier
Alexis Rastier - Sigillaria 🌴
7 days
In 2025, I presented some new results from my PhD dedicated to the Latest Famennian flora of Euramerica🌿 in the Swedish Museum (NRM) and at Agora Paleobotanica in Paris. At Agora, I was awarded the Boureau Prize for the best oral presentation. 😄🏆 #Paleobotany #Devonian
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@grok
Grok
13 days
Join millions who have switched to Grok.
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@juliet_turner6
Juliet Turner
21 days
I once found the world’s biggest moss in a cloud forest in Papua New Guinea - I think this is Dawsonia superba & a single sprig is the length of my hand! Anyone else get really strong Carboniferous vibes? I was expecting a Meganeura to appear any minute
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@Dinoh555
Dactylioceras🇵🇸
22 days
Traces of dipnoan fish document the earliest adaptations of vertebrates to move on land Art by Jakub Zalewski https://t.co/Nnt2DzmoRh
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@MikeDAntonio22
Mike D'Antonio
25 days
Accepted paper now online in @annbot ! "Convergent evolution of the developmental anatomy of leaf abscission: evidence from the arboreous lycopsid Sigillaria" @FieldMuseum https://t.co/P6tCr08xiq
academic.oup.com
AbstractBackground and Aims. A striking feature of late Paleozoic arboreous lycopsids is the presence of leaf scars, set within leaf cushions, that blanket
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@PlantPhys
Plant Physiology
2 months
Call for Papers: 2026 Focus Issue on Early Land Plant Evolution – Phylogenetics, Paleobotany, and Evo-devo Physiology. Submission Deadline: 03/2026. https://t.co/iBJFZ9kIbl #plantscience
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@willgearty
Will Gearty
1 month
📢 deeptime: an R package that facilitates highly customizable and reproducible visualizations of data over geological time intervals 🔗 https://t.co/xYKZR4ah0U Fully #openaccess in @BigEarthData1 with insight about deeptime 📦 development and code examples! #rstats #geology
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@PaleonewsFrance
Paléonews
4 months
Conférence et Rencontre avec les abonnés Date: Lundi 5 mai 2025 Dernier Bar Avant la Fin du Monde de Lille 12 Rue de Pas, 59000 Lille https://t.co/FVZzohpeLB https://t.co/Av43l2yjhR https://t.co/YIgqzCIxuK
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@Val_Fisch
Prof. Valentin Fischer
6 months
It might sound crazy but we are going to build up a life-size sculpture of Mosasaurus right in the city center of Liège! You can discover and contribute to project via this link! https://t.co/zRDvZzxkZu
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promethea.koalect.com
Faites un don pour voir une sculpture de Mosasaure, l'emblématique reptile de la Meuse, sortir de l'eau à Liège !
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@ESCONI
ESCONI
7 months
2025 ESCONI Gem, Mineral, and Fossil Show - Preview #1: Crenulopteris acadica plate! #fern #show #fossil #paleontology #MazonCreek #pennsylvanian The first of a series of previews! https://t.co/zhVdHziGxY
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@JMT_MHL
Jerónimo Morales Toledo
1 year
Visiting the collections has always helped me grow as a scientist, and seeing some cool fossil plants I had only read about was even cooler. Thanks to the Museum für Naturkunde for hosting me this week! #paleobotany
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@LabouryA
Laboury Antoine
9 months
Really proud to have finally submitted my Ph.D. manuscript 🥳 I would like to thanks everyone who helped during this adventure, especially @Val_Fisch, @DrTLStubbs and Torsten Scheyer for their brilliant supervision!
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@ThePalAss
The PalAss
9 months
Revision of Sagenopteris : a major lineage of Mesozoic seed plants https://t.co/R2MySLehZo @wileyearthspace #PapersinPalaeontology
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@PalaeoJules
Julianne Kiely - Commissions Open
10 months
And finally, I illustrated three living species: the liverwort Marchantia polymorpha, the clubmoss Lycopodium annotinum, and the flowering plant Arabidopsis thaliana, which is a modle organism in plant research. #botany #plants
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@Val_Fisch
Prof. Valentin Fischer
9 months
Two new @frsFNRS funded PhD students in the lab: @melvinvankelst will be working on the biomechanical performances of Eocene-Oligocene carnivorous mammals and @AlexisRastier will be investigating the latest Devonian turnovers in plant communities!
@frsFNRS
F.R.S.-FNRS
9 months
📢 Résultats de l'appel Bourses FRIA 2024 ! Ce 10 décembre 2024, le Conseil d'administration du FRIA a octroyé une bourse de doctorat aux candidates et candidats suivants : 👉👉 https://t.co/29nfwPnnkG
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@AlexisRastier
Alexis Rastier - Sigillaria 🌴
9 months
By the late Devonian, these two pioneers were part of a wave of euphyllophytes that independently converged on the development of leaves. 🌱🌿
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@AlexisRastier
Alexis Rastier - Sigillaria 🌴
9 months
#FossilFriday 🌿 Behold the late Devonian Cephalopteris and its Belgian relative Rhacophyton! These early ferns showcase fascinating planated yet unlaminated ultimate appendages—an evolutionary step toward the true leaves we know today. #Paleobotany
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@PalaeoJules
Julianne Kiely - Commissions Open
9 months
Here's some new #paleoart of the #Carboniferous #fern Ankyropteris corrugata, which preserves the earliest evidence of a fiddlehead! Congratulations to @rafadscruz and @Sandy_Heth on the publication of this study! https://t.co/qidxXiOygf #paleobotany #FossilFriday
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@Sandy_Heth
Sandy Hetherington
9 months
Rafael @rafadscruz and I are excited to share our new paper about fern fiddlehead evolution @CurrentBiology Read the paper at https://t.co/33fd2Zd2S6 Want to find out more watch our video below 👇👇 @MPEG_Edinburgh @PalaeoJules @SBSatEd @EdinburghUni
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@CardiffCurator
Cardiff Curator
9 months
If Jack had lived in the coal swamps, 300 million years ago... Who needs a beanstalk, when you’ve got a giant club-moss to climb, reaching over 40 metres into the sky! #FossilFriday #MuseumAdvent
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@PNASNews
PNASNews
9 months
One in 10 woody plants build domatia, tiny homes for mites on their leaves. The mites benefit the plants by eating fungal and arthropod pests. The relationship is so successful that mite domatia have independently evolved hundreds of times. In PNAS: https://t.co/MMdTRd6FUf
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