📢 Paper alert!
Excited to share the first publication of my PhD!😁
We analysed fossil occurrences of the last 23 Ma to understand how geographic range change relates to extinction risk.🌍🐚🪸🦈
Keen to learn more? Here is the paper:
👉 dx.doi.org/10.1111/geb....
If you're interested in applying for a Marie Skłodowska-Curie Postdoctoral (or any other) fellowship to come work with me
@es-ucl.bsky.social on sauropod dinosaurs, crocodiles, fossil birds, past biodiversity patterns, and/or vertebrate conservation palaeobiology, please get in touch
Susie it’s not lunch when it includes three Aperol Spritz 😛
This was actually my 50th peer-reviewed paper 😊 feels like a bit of a milestone, even though I know it’s just a number.
3D printed skull sculpture of Nothosaurus marchicus, with open jaw held in hand.
3D printed skull sculpture of Nothosaurus marchicus, held in hand.
3D printed skull sculpture of Nothosaurus marchicus. Skull and jaw separated.
Finished Nothosaurus marchicus skull sculpture. Life size print, sculpted in #Blender.
#paleoart #sciart
Ooo super cool! Look @fossilrob.bsky.social
Walter Joyce to the right, Juliette Menon in the center and me to the left standing in front of a large screen showing a fossil sea turtle skull that was part of Juliette‘s PhD
Also congratulations to Dr Juliette Menon, who defended her PhD today just after Guilherme. I supervised one of her chapters, but otherwise she was Walter Joyce‘s student 🐢
Me in the foreground with Guilherme next to me, in front of his title slide on turtle ecomorphology
Very special day: congratulations to Dr. Guilherme Hermanson for defending his PhD today - my 1st PhD student 🥹This brings our Swiss SNSF Ambizione project to an official end - many papers still coming. Guilherme will start an own postdoc project joining @singerstone.bsky.social‘s lab 🐢
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
‼️🚨 Job Alert ‼️ 🚨
Two Post Doc Opportunities:
PDRA in Macroecology / Paleobiology
my.corehr.com/pls/uoxrecru...
PDRA in Extinction & Conservation / Paleobiology
my.corehr.com/pls/uoxrecru...
Any questions, please get in touch! Closing date May 1st.
Eunotosaurus reconstruction by Andrey Atuchin
Eunotosaurus has a plesiomorphic inner ear shape & few distinct traits that could link it to turtles specifically. Our dataset shows inner ear shapes contain phylogenetic signal, but also many shapes that likely evolved convergently. @olorotitan.bsky.social created this beautiful reconstruction
PCA of semicircular canal shape of amniotes
Using landmarks on semicircular canal skeletons & a large amniote dataset, we show that turtles, birds & mammals have distinct trajectories of inner ear shape, w most other amniotes falling s/w in b/w. We did not take this further than PCA - more sampling required for ecomorphological analyses imo
Phylogeny of amniotes with inner ear models at tips
Because the phylogenetic position of Eunotosaurus is debated (stem turtle? Early reptile?), we compared the inner ear with many other amniotes, including new segmentations of Youngina.
3D models of the inner ear of Eunotosaurus
Eunotosaurus specimen from the BPI collections at Wits in Johannesburg
New paper: we describe the inner ear anatomy of Eunotosaurus africanus, based on a specimen that has not been published previously. Open access @journalsystpal.bsky.social:
www.tandfonline.com/doi/full/10....
Hi all. I am very excited that after 6 years I finally got my phylogenetic comparative methods book and online exercises online. Feel free to use and share. The book is here: nhcooper123.github.io/pcm-primer/. Note that it is not finished, we had to abandon it before the sunk costs fallacy broke us
Thanks - inspired by some of your own work: I long wanted to use the logistic regressions you used in your 2009 paper on this turtle question, and Guilherme brought this to fruition.
🚨 New paper I had the honor to illustrate! 🚨
Guilherme Hermanson and Serjoscha W. Evers take a look at the survivors of the K-Pg event among the turtles and besides size note that especially diet is something that sets them apart: many of them very shell crusher!
paper below:
Durophagous Palatobaena, found to both sides of the extinction horizon, sitting on an extinct Basilemys with the mandatory T. rex skull in the background. Art by Joschua Knüppe
New paper: royalsocietypublishing.org/rsbl/article...
Guilherme & I investigate dietary selectivity on turtle K/Pg extinction - durophagous turtles have higher survivorship probability. Beautiful art by @joschuaknuppe.bsky.social
schematic diagram showing hypothetical vertebrate assemblages and corresponding time samples in a 15 m sequence of fluvial deposits over 30 kyr with various time-averaging and about 50% time sampling completeness.
The new annual review from Kay Behrensmeyer has a killer Figure 3 depicting how different samples of the geologic record equates to different samples of stratigraphic time.
www.annualreviews.org/content/jour...
I’m looking for a post doc (up to five years) interested in phylogenetics and earth systems - please spread the word!
Having a hard time keeping up with the fast-moving field of origin of eukaryotes/Asgards archaea? Our new perspective article can help, we review the status of research over the last decade and where it's going.
The archaeal roots of eukaryotic life
www.pnas.org/doi/10.1073/...
We are looking for a postdoc (up to five years) interested in climate-driven plant extinctions! Working with @manuelsteinbauer.bsky.social and me and a large team on various aspects of Earth system sciences.
More information here: fau-earth-system-science.github.io
I just love this place. Bird hall in the Naturkundemuseum Bamberg - original exhibits from 1791 (and younger). Newest cabinet from 1830s.
Usually, I don’t read threads with 35 posts on fishes - but I make exceptions for Matt’s posts ;)
So I pleased to announce the conceptual spawn of FigTree: PearTree (acronym still to be finalised). If you want to dive right in it is hosted as a web app here: artic-network.github.io/peartree (click the “Example...” button for immediate candy and then click every button you can find).
Limitations of molecular dating using constant birth-death rate priors in deep time reflected in Brachiopoda evolution www.sciencedirect.com/science/arti...
Since you’re British, I image it’s a deeply felt love for queueing.
Submitted an exciting (invited) review today (🐢 systematics). Two papers in press (🐢 extinction, Permian 🦎), one back from review (🐢🦎 stapes), one waiting to find a journal that will send it out for review (🐢-🌳) & another ready for submission in a week or two. This will be a good research year!
Well I do hope you get a permanent job! Good luck 🤞