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Rachel Warnock

@rachelwarnock.bsky.social

Palaeobiologist, Professor at FAU.

866 Followers  |  400 Following  |  34 Posts  |  Joined: 30.11.2023
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Posts by Rachel Warnock (@rachelwarnock.bsky.social)

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A covarion model for phylogenetic estimation using discrete morphological datasets Abstract. The rate of evolution of a single morphological character is not homogeneous across the phylogeny and this rate heterogeneity varies between morp

Our new paper 'A covarion model for phylogenetic estimation using discrete morphological datasets,' is out in SysBio!
We introduce the "covariomorph" model in RevBayes to capture character and lineage specific rates of morphological traits.
πŸ”— doi.org/10.1093/sysb...

25.02.2026 19:24 β€” πŸ‘ 37    πŸ” 20    πŸ’¬ 2    πŸ“Œ 0
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I invite you to check our paper entitled β€œRebuilding Ukraine’s capacity for fundamental research in evolutionary biology” doi.org/10.1038/s415... in @natecoevo.nature.com about the Ukrainian School in Evolutionary Biology #USEB we organized in 2025.
#biology #evolution #school #science #Ukraine

09.02.2026 15:22 β€” πŸ‘ 14    πŸ” 16    πŸ’¬ 1    πŸ“Œ 0
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✨ Calling all PalAss members & future members! ✨

πŸ‘‰ Explore all opportunities here: palass.org/awards-grant...

Not a PalAss member yet? You’re very welcome to join us!
πŸ”— palass.org/membership

Please share with colleagues and students who might benefit πŸ’¬βœ¨

#PalAss #grant #palaeontology #join

04.02.2026 14:43 β€” πŸ‘ 13    πŸ” 10    πŸ’¬ 1    πŸ“Œ 0
Are interphylum spiralian relationships resolvable? The phyla making up the major animal clade of Spiralia have been clear since the advent of molecular phylogenetics; the relationships between these spiralian phyla have not. The lack of consensus over the relationships between these important animal phyla might be a clue implying their emergence in an explosive radiation. Focusing on the five largest spiralian phyla (Annelida, Brachiopoda, Mollusca, Nemertea and Platyhelminthes) and using two phylogenomic datasets, we have applied site-bootstrapping and taxon-jackknifing to explore this example of taxonomic instability. Analyses on the 105 possible rooted trees relating them showed that interphylum branches are very short. Preference for rooting Spiralia on Platyhelminthes is a long-branch artefact. Most analyses on the 15 unrooted trees showed a preference for the same topology but the support over other solutions was non significant. We conclude that the spiralian phyla emerged in rapid succession resulting in a difficult to resolve radiation. The deep history we infer for Spiralia has wide ranging implications for our interpretation of Cambrian fossils and for the evolution of traits such as biomineralization, segmentation and larvae. Impact Statement Analyses of two independent phylogenomic datasets suggest an explosive radiation at the origin of Spiralia, with implications for understanding the group’s evolutionary history. ### Competing Interest Statement The authors have declared no competing interest.

New paper on @biorxiv-evobio.bsky.social: Are interphylum spiralian relationships resolvable? doi.org/10.64898/202...

@maxjtelford.bsky.social and I tried answering this question with two independent phylogenomic datasets.

(1/7) πŸ§ͺ

02.02.2026 17:03 β€” πŸ‘ 11    πŸ” 9    πŸ’¬ 2    πŸ“Œ 0
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The timing and nature of marine ecosystem recovery following the Permian-Triassic mass extinction - npj Biodiversity npj Biodiversity - The timing and nature of marine ecosystem recovery following the Permian-Triassic mass extinction

Exciting news! Our invited perspectives in npj Biodiversity looks at how marine life bounced back after the worst mass extinction ever, the Permian‑Triassic Mass Extinction (PTME) ~252M years ago. Big questions: fast or slow? recovery or restructure?

www.nature.com/articles/s44...

03.02.2026 14:34 β€” πŸ‘ 16    πŸ” 9    πŸ’¬ 1    πŸ“Œ 0
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Society for the Study of Evolution Site description

Applications due Monday for the T. H. Huxley Award, which recognizes high-quality evolution education resources! The recipient will have the opportunity to attend and present their work at the NABT meeting in October or #Evol2026 in June. Apply today! bit.ly/2kP2pPM

30.01.2026 21:07 β€” πŸ‘ 8    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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Vacancies for professorships Find out more about the vacant professorships at FAU here: dates, contact persons, and addresses can be found in the job advertisements.

A professorship in Exogene Geodynamics opend up at our institute! Hoping to find a nice new colleague 😊 www.fau.eu/research/res...

14.01.2026 15:22 β€” πŸ‘ 1    πŸ” 3    πŸ’¬ 0    πŸ“Œ 1
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Revealing the hidden patterns of shark and ray diversity over the past 145 million years Gardiner et al. reconstruct the diversity of sharks and rays across the past 145 million years using deep learning and an extensive dataset. Their results unveil previously hidden patterns, including ...

Our new paper is online! We found that 1) today's shark & ray diversity was already reached ~100Ma; 2) that the K/Pg extinction was not catastrophic; 3) that the max diversity was reached ~50Ma; and 4) that today's diversity is depleted compared to the past.
www.cell.com/current-biol...

22.01.2026 16:41 β€” πŸ‘ 59    πŸ” 28    πŸ’¬ 2    πŸ“Œ 2

Would love to see your syllabus! And/or share material!

22.01.2026 18:35 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Workshop on Molecular Evolution | Marine Biological Laboratory The workshop serves graduate students, postdocs, and established faculty from around the world seeking to apply the principles of molecular evolution to questions of anthropology, conservation genetic...

Applications are now open for the 2026 Workshop on Molecular Evolution (MOLE)!

www.mbl.edu/education/ad...

Claudia Solis-Lemus and I will be holding an informational session on Zoom next Wed (1/21) from 10:30-11:30 AM Central for those interested:

lsu.zoom.us/j/4968115684

Deadline to apply: 1/26

16.01.2026 21:00 β€” πŸ‘ 22    πŸ” 20    πŸ’¬ 0    πŸ“Œ 1

Hiring a new professor in my department who specializes in Earth surface topics (e.g. climate, sediments, soils, oceans, etc). Non-germans welcome to apply-- the postdoctoral qualifications (e.g. habilitation) are just for German applicants.

14.01.2026 16:36 β€” πŸ‘ 1    πŸ” 3    πŸ’¬ 0    πŸ“Œ 0
Book cover for Reproducible Code guide. The cover has a red background with a large yellow-bodied black-headed stag beetle.

Book cover for Reproducible Code guide. The cover has a red background with a large yellow-bodied black-headed stag beetle.

Excited to launch the new improved Reproducible Code guide from @britishecologicalsociety.org @methodsinecoevol.bsky.social FREE online here! www.britishecologicalsociety.org//wp-content/... Amazing work by some very talented ECRs. We hope it’s useful!

16.12.2025 15:03 β€” πŸ‘ 313    πŸ” 197    πŸ’¬ 6    πŸ“Œ 9

There are a couple of weeks left to apply! I just heard that we can also accept PhD students with a suitable background, so extending the call to those as well. #biomech_sky

16.12.2025 08:42 β€” πŸ‘ 4    πŸ” 9    πŸ’¬ 0    πŸ“Œ 0
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New paper alert! 🚨 🐌

We studied historic Antarctic fossils from the Zinsmeister Collection to assess whether the K-Pg extinction, as recorded on Seymour Island, was sudden or gradual. We found that benthic life thrived in the 4 million years before the K-Pg.

doi.org/10.1016/j.pa...

13.12.2025 10:51 β€” πŸ‘ 42    πŸ” 18    πŸ’¬ 2    πŸ“Œ 2

Does anyone know any current or former recipients of an SNF mobility grant based in Germany? I'd be grateful for any leads!

12.12.2025 13:07 β€” πŸ‘ 2    πŸ” 6    πŸ’¬ 0    πŸ“Œ 0

The deadline to apply to the Access, Inclusion, and Community (AIC) Committee has been extended to December 15!

08.12.2025 19:56 β€” πŸ‘ 7    πŸ” 5    πŸ’¬ 0    πŸ“Œ 0

☹️

06.12.2025 19:33 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Global sampling decline erodes science potential of natural history collections - Nature Communications Natural history collections hold over two billion specimens representing Earth’s biodiversity, but their scientific value depends on continued specimen collection and digitisation. This study demonstr...

In an era marked by rapid climate change and biodiversity loss, it is imperative that we continue to invest in the unique value of natural history collections data

"Global sampling decline erodes science potential of natural history collections" πŸ§ͺ

26.11.2025 02:10 β€” πŸ‘ 56    πŸ” 24    πŸ’¬ 1    πŸ“Œ 1
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Postdoctoral researcher for DFG-funded project β€œFossilGaitSim” The Biomechanical Motion Analysis and Creation (BioMAC) group at the Friedrich-Alexander-UniversitΓ€t Erlangen-NΓΌrnberg (FAU) invites applications for a postdoctoral position with the goal to…

My research group has an open position for a postdoc! Interested in investigating the postural transition towards mammalian gait using movement simulations? We might have the right position for you! More details and application info here: www.asm.tf.fau.de/en/2025/11/1...

19.11.2025 13:41 β€” πŸ‘ 9    πŸ” 7    πŸ’¬ 0    πŸ“Œ 1
My manifesto for outreach officer at the PalAss

My manifesto for outreach officer at the PalAss

I am running for the outreach officer position for the @thepalass.bsky.social this year (manifesto in image).

If you are a member, please check your mail and consider voting in the AGM. Several important roles are up for election with great candidates looking to work for our community.

19.11.2025 15:47 β€” πŸ‘ 13    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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PhyloWeaver – Interactive phylogenetic tree editor Edit and visualize phylogenetic trees directly in your browser. PhyloWeaver lets you interactively rearrange tree topologies and export high-quality figures for publications and presentations.

I’ve released a tool to sketch and edit phylogenetic trees!
yawak.jp/PhyloWeaver/

Load a Newick file and intuitively add/remove/resize branches.
Useful for quick conceptual trees, extracting subtrees, or turning ideas into Newick.

18.11.2025 01:59 β€” πŸ‘ 145    πŸ” 74    πŸ’¬ 4    πŸ“Œ 1
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New paper by Amy Shipley and Lydia Woods DeepBio@Leeds PGRs Amy Shipley and Lydia have published a review on the sixth mass extinction, as part of a working group on Cenozoic extinctions led out of the Anthropocene Biodiversity Centre at …

PGRs Amy Shipley (@sauropodlets.bsky.social) & Lydia Woods recently published a review in @globalchangebio.bsky.social showing that while today’s extinction rates aren't yet at "Big Five" mass extinction levels, they’re likely the highest seen in the last 66myrs.

amdunhill.co.uk/2025/11/17/n...

17.11.2025 13:46 β€” πŸ‘ 10    πŸ” 4    πŸ’¬ 0    πŸ“Œ 0
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ACCE+ DLA Programme: Morphological Trait Evolution in Isolated Populations of Large Mammals and its Implications for Rewilding in the UK at University of Liverpool on FindAPhD.com PhD Project - ACCE+ DLA Programme: Morphological Trait Evolution in Isolated Populations of Large Mammals and its Implications for Rewilding in the UK at University of Liverpool, listed on FindAPhD.co...

Anyone interested in applying for PhDs at #2025SVP, email or find me or @tguillerme.bsky.social for a chat if you’re interested in morphological trait evolution with a conservation theme:
πŸ”— www.findaphd.com/phds/project...

13.11.2025 13:59 β€” πŸ‘ 12    πŸ” 11    πŸ’¬ 0    πŸ“Œ 0
Flow diagram illustrating the workflow for the ppgm R package. It starts with an extant envelope, fossil data is added, the evolution of climate niche is modelled, and finally climate niche & palaeoclimate are matched to show potential range.

Flow diagram illustrating the workflow for the ppgm R package. It starts with an extant envelope, fossil data is added, the evolution of climate niche is modelled, and finally climate niche & palaeoclimate are matched to show potential range.

ppgm: an R package for integrating neontological, palaeontological & climate data in a phylogenetic comparative framework onlinelibrary.wiley.com/doi/10.1111/... #SVP2025 @alexh-palaeo.bsky.social @datadryad.bsky.social @tamueccb.bsky.social

15.11.2025 08:09 β€” πŸ‘ 31    πŸ” 18    πŸ’¬ 0    πŸ“Œ 1

Want to do a PhD linking palaeontology, ecological modelling and polar ecosystems? Look no further than this NERC GW4+ DLTP funded project with @rowanwhittlebas.bsky.social at @bas.ac.uk & @bristolpalaeo.bsky.social and others (inc me).

www.bristol.ac.uk/media-librar...

12.11.2025 15:47 β€” πŸ‘ 6    πŸ” 17    πŸ’¬ 0    πŸ“Œ 0
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Reminder that my lab is seeking graduate students for fall 2026. As part of @oupaleobiology.bsky.social, my lab uses a combination of fossils, statistical phylogenetics, fieldwork, & computational approaches to investigate macroevolutionary dynamics in the marine biosphere. Link w/ more info below:

12.11.2025 20:50 β€” πŸ‘ 24    πŸ” 19    πŸ’¬ 2    πŸ“Œ 1

PhD position available in evolutionary genomics/bioinformatics (hoehnalab.github.io/job_adverts/...). Topic: analyzing gene expression evolution across several firefly species and linking expression changes to genomic architecture. The position is jointly supervised with @anaevolcatalan.bsky.social

11.11.2025 09:00 β€” πŸ‘ 45    πŸ” 54    πŸ’¬ 4    πŸ“Œ 2
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PhD Topics - Entry September 2026 β€” The Foster Lab This year we are involved in 3 fully funded PhD projects via IGNITE our NERC DLA. The deadline is Thursday Jan 8th 2026 .  1.      Is the world already 1.5 C warmer?...

Fully funded PhD projects available in my group (Please share with interested parties, details here: www.thefosterlab.org/blog/2025/11...):

11.11.2025 13:46 β€” πŸ‘ 10    πŸ” 15    πŸ’¬ 1    πŸ“Œ 1

Interested in the @evojlinnsoc.bsky.social
special issue on phylogenomic discordance? tinyurl.com/v2eces3s πŸ§ͺ

Three more summaries added below!

We'll return when more articles come live.

Again, all and any oversimplications are entirely my fault!

11.11.2025 13:55 β€” πŸ‘ 9    πŸ” 8    πŸ’¬ 0    πŸ“Œ 0
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πŸ”Ž How can we measure and compare morphological diversity through time and across groups?
New Edition of the course: Introduction to the Analysis of Morphological Disparity

πŸ“… January 6th–15th, 2026 (ONLINE)

04.11.2025 12:31 β€” πŸ‘ 1    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0