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Ray Chatterji

@raychatterji.bsky.social
446 followers 505 following 23 posts

Evolutionary biologist specialising in trait evolution Big nerd

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Ray Chatterji @raychatterji.bsky.social · 03/10/2026
This chicken running around with his head flip flopping everywhere
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Ray Chatterji @raychatterji.bsky.social · 03/10/2026
Do you think long neck vertebrae or more vertebrae?
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Steve Brusatte @stevebrusatte.bsky.social · 30/09/2026
🚨Postdoc job alert: Come work with my paleontology & evolution group in Edinburgh! Researcher in Cognitive Evolution Over Deep Time. You'll study how brains & neurons have evolved over time, and predict neuron count in extinct species! www.jobs.ac.uk/job/DTC355/p...
jobs.ac.uk
Postdoctoral Research Associate in Cognitive Evolution over Deep Time at The University of Edinburgh
Apply for the Postdoctoral Research Associate in Cognitive Evolution over Deep Time role on jobs.ac.uk, the top job board for academic positions in higher education. View details and apply now.
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nick @unionnick.bsky.social · 27/09/2026
On the *same day* the Cornell Seven drugged and raped Jane Doe, Cornell banned four students (including the President of Cornell JVP) from campus for three years for nonviolent, pro-Palestine protests. The same Cornell officials let the rapists off with apology essays.
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Guardian US @us.theguardian.com · 28/09/2026
Gone are the mass raids and militarized metro operations. Gone are the pomp and pageantry. But ICE arrests have hit record levels. ICE operations are no longer concentrated in large American cities. Immigration enforcement officials are also working in suburban and rural areas, all across the US.
A map of the United States that shows immigration arrests per 100,000 people since ICE's new enforcement strategy began under DHS secretary Markwayne Mullin.
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Dr Alice Clement @draliceclement.bsky.social · 22/09/2026
Flinders 3D Digital Data Workshop happening THIS THURSDAY! Please ensure you register your (free) attendance if you wish to join us for an informal dat of 3D data discussions (catch that laster beam!)
static.klipy.com
Crystal The Cavern Spirit Plays with Laser
ALT: Crystal The Cavern Spirit Plays with Laser
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Dr Alice Clement @draliceclement.bsky.social · 11/09/2026
For those in Adelaide who work with digital 3D data, I'm organising an informal workshop for us to share insights on our methods, challenges and ideas at the "Flinders University 3D Data Software, Analysis and Visualisation Workshop" on Sep 24th Register here: events.humanitix.com/flinders-uni...
events.humanitix.com
Flinders University 3D Data Software, Analysis and Visualisation Workshop
Bringing together biomedical and mechanical engineering, archaeology and palaeontology to discuss approaches to capturing, handling and publishing 3D data.
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Alaina Wood @thegarbagequeen.bsky.social · 10/09/2026
Scientists like myself knew that crossing the 1.5 °C threshold was inevitable for years. Stop trying to use that report as an excuse to give up on taking action.
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Dr. Sven N. Nielsen @snnielsen.bsky.social · 07/09/2026
Paleontology job in Mexico!
earthworks-jobs.com
Full-time Researcher Position
Full-time Researcher Position at Universidad Nacional Autónoma de México - UNAM. Located in Queretaro, Mexico. Deadline: 15/09/2026.
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Nic Rawlence @nicrawlencenz.bsky.social · 04/09/2026
Based on our widespread engagement around ancient DNA, there's little to no support across Ngāi Tahu rūnanga (incl. Ngāi Tūāhuriri members) for @itiscolossal.bsky.social colonialist moa de-extinction project & no support from any of the iwi in Te Tau Ihu @ top of Sth Is bsky.app/profile/nicr... 1/3
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Diana Fisher @dianafisher1080.bsky.social · 01/09/2026
Collections manager position in the excellent Western Australian Museum in Perth. Deadline 15th September search.jobs.wa.gov.au/jobs/collect...
search.jobs.wa.gov.au
Collections Manager (Mammalogy and Ornithology) - Perth Metropolitan, Western Australia, Australia
We currently have one (1) x Permanent, Part-time vacancy (0.6FTE or 45 hrs/fortnight) available for immediate filling. A Pool will also run for a period of 18 months. About us The Western Australian M...
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Weisbecker B&B Lab @weisbeckerbblab.bsky.social · 31/08/2026
Our new study shows how unlike other living predatory mammals the thylacine was, skull-wise: huge heads, altirostral, long & flared snouts, massive infraorbital foramina. Key point: Don't treat marsupials like copies of European placentals. @dsrovinsky.bsky.social
nature.com
Skull morphology of the extinct Tasmanian tiger suggests unique biting style
Nature Communications - The recently extinct thylacine was Australia’s largest marsupial predator and famously likened to dog-family carnivorans such as wolves. However, here the authors show...
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Ray Chatterji @raychatterji.bsky.social · 11/08/2026
Depends on the species of duck Eiders often get above 2kg and another group of (unrelated) diving ducks, the steamer ducks, regularly get above 5kgs
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Ray Chatterji @raychatterji.bsky.social · 11/08/2026
its wild! I mean there are lots of leg ones. In foot propelled divers hindlimbs are positioned far back on the pelvis for more efficient thrust, and the pelvis is generally quite narrow, probably helps center the feet. The femur is quite curved, not entirely sure why, maybe to position the feet?
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Ray Chatterji @raychatterji.bsky.social · 11/08/2026
Sea ducks can dive down to similar depths, the long tailed duck has been recorded diving down 60m. They also have denser bones! (Not as dense as the loon though) The musk duck also sits almost as low in the water
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hannahcole04.bsky.social @hannahcole04.bsky.social · 22/07/2026
Do humans and birds share an eye for design? 🐦🎨 For my Master's diss, I’m testing if we share aesthetic tastes with bowerbirds. I need 100 responses to finish! Visual, anonymous & under 5 mins. Link: exe.qualtrics.com/jfe/form/SV_... 🧪 cc: @scienseed.com #AcademicSky #SciComm
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Ray Chatterji @raychatterji.bsky.social · 05/07/2026
Thanks Yeah, I've been fully converted
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Ray Chatterji @raychatterji.bsky.social · 05/07/2026
Sorry about that! Link posted in the thread
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Ray Chatterji @raychatterji.bsky.social · 05/07/2026
Okay here's the not broken link hopefully link.springer.com/article/10.1...
link.springer.com
Geometric morphometrics enables accurate predictions of palaeoecology and reveals unique adaptations to an expanded niche space in extinct waterfowl - Evolutionary Ecology
Establishing the relationships between organismal phenotypes, their ecology, and the environment through time is a central goal in evolutionary biology. A robust understanding of how functional traits...
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Ray Chatterji @raychatterji.bsky.social · 05/07/2026
2nd duck paper published! We wanted to see if we could predict extinct duck ecologies using all our morphometric data We kinda could! But some species seem to have occupied niches that modern ducks don't. The moa nalo and cnemiornis were real weird 🧪 link.springer.com/article/10.1...
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Cy Marchant @slvrhwk.bsky.social · 20/06/2026
Reconstructed skull of Eunotosaurus africanus, an early reptile from the Permian of southern Africa. 🐢 Long hypothesized to be an ancient ancestor of turtles, recent work led by @semifossorial.bsky.social shows this curious creature is instead a 'turtleized' millerettid. (1/🧵) #FossilFriday
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Alberta Claw @albertonykus.bsky.social · 27/04/2026
Developmental basis of morphological disparity in the avian palate: www.nature.com/articles/s41... 🪶🧪 (📷Plateau et al.)
Comparison of juvenile and adult skulls from several species of birds. The skulls are viewed from below, highlighting the bones of the palate.
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Biosecurity for LIFE @biosecuritylife.bsky.social · 27/04/2026
Please do follow us as well as liking & sharing our posts. Since moving away from X we have been fighting against the algorithms to re-establish our 1000 followers. Help us raise awareness of #biosecurity on seabird islands & we promise to reward you with beautiful UK #island & #seabird photos!
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Corinne Mensforth @corinnemensforth.bsky.social · 23/04/2026
It's out! doi.org/10.3389/fevo... Koharalepis was a large Devonian predatory fish collected in Antarctica. We found its braincase was similar to the fishes straddling the vertebrate water-to-land transition, and evidence of adaptations to life near the water's surface. Painting by Thomas Turner.
Tetrapodomorph fish fossil Koharalepis jarviki in dorsal view, L-R: fossil photo by John Long; 3D model; basic life reconstruction.Painting of life reconstruction of Koharalepis jarviki by palaeoartist Thomas Turner.
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Asher Wolf @asherwolf.bsky.social · 10/04/2026
This is a terrible idea. It essentially means people with disability or their carers have to run down their assets before accessing the NDIS. Which means living in poverty permanently
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Dr Thomas Clements @taphonomist.bsky.social · 08/04/2026
I am so unbelievably proud to present 8 years of hard work: the worlds oldest octopus is not an octopus... Pohlsepia is actually a really rotten Nautiloid (but oldest soft tissue nautiloid ever found!). 🐙❌ royalsocietypublishing.org/rspb/article...
A picture of a small concretion (rock) with a white blob in the middle. this blob was described as the worlds oldest octopus and called Pohlsepia. Our research shows that hidden under the rock are teeth that confirm it is a nautiloid (a relative of modern nautiluses).An artistic rendering of the rotting Pohlsepia on the seafloor 310 million years ago. Sharks, fish and arthropods lurk in the background
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c0nc0rdance @c0nc0rdance.bsky.social · 09/04/2026
I'm deep down the rabbit hole on FROGFISH, 60 species of anglerfish in family Antennariidae. They are deeply, utterly WEIRD & MARVELOUS. Most walk on modified fins. Others use jet propulsion. Some are capable of air-breathing. Some are "hairy", others blend perfectly in sargassum.
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Thomas R. Holtz, Jr. @arctomet.bsky.social · 01/04/2026
axial skeleton of the tuatara (Rhynchocephalia: Sphenodon): insights on intraspecific variability, ontogeny, sexual dimorphism, and remarks on fossil taxa url: academic.oup.com/zoolinnean/a...
academic.oup.com
The axial skeleton of the tuatara (Rhynchocephalia: Sphenodon): insights on intraspecific variability, ontogeny, sexual dimorphism, and remarks on fossil taxa
Abstract. As the sole living rhynchocephalian, the tuatara (Sphenodon punctatus) provides important comparative information for fossil rhynchocephalians an
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Toothy Grin @toothygrinart.bsky.social · 05/03/2026
It's a big day for Australasian mammal fans, with three new marsupials from West Papua! For me, the best bit is that two of them closely resemble fossils from Pleistocene sites in Queensland. Papers are open access, so go read 'em!
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Ray Chatterji @raychatterji.bsky.social · 27/02/2026
Anyway its a cool study! You should read it. Its long but i promise its good waterfowl are real cool. ducks are strange as hell
Egyptian geese bullying a pigeon. Being an asshole is also a convergent goose trait
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Ray Chatterji @raychatterji.bsky.social · 27/02/2026
We also did a whole bunch of other stuff. We time calibrated the phylogeny. Waterfowl really started to diversify in the late oligocene to mid miocene. We found that all the elements were integrated with one another. We think this limitation on shape might encourage convergence within the group.
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Ray Chatterji @raychatterji.bsky.social · 27/02/2026
Using a bunch of modeling stuff we found that foraging behaviour (whether they swam on the surface or dived or walked to get food) was the strongest factor selecting for shape. Geese (Terrestrial herbivores) and Coastal macroinvertivore divers showed the strongest signs of convergence
Time dated phylogeny of waterfowl, with branches colour coded by foraging behaviour. On the right are the average hindlimb shapes for each foraging group, and the mean skull shapes for each dietary group
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Ray Chatterji @raychatterji.bsky.social · 27/02/2026
We were interested in convergent evolution, particular as it related to foraging ecology. So we looked at the shape for the skull (eats the food) and hind limb (gets to the food) we found a surprisingly strong ecological signal for all four elements, particularly for divers and terrestrial species
4 PCA plots for waterfowl skull shape, femur shape, tibiotarsus shape, and tarsometatarsus shape. The skull is grouped together by diet and foraging. While the rest are grouped together by foraging behaviour
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Ray Chatterji @raychatterji.bsky.social · 27/02/2026
There weren't any major surprises, except maybe that pygmy geese are sister to stiff tail ducks like the ruddy duck. We also once again confirmed that the musk duck Biziura lobata is really weird and has been doing it's own thing for a very long time
Mal musk duck on a lake
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Ray Chatterji @raychatterji.bsky.social · 27/02/2026
Anyone who works on waterfowl (Ducks, Geese, Swans, and Screamers) knows that their phylogeny has been a mess There are a lot of convergent characters and no two molecular trees are the same. So we created the most robust and well sampled tree to date, built on both nuclear and mitochondrial DNA
Molecular phylogeny of waterfowl, with the major groups within anatidae highlighted
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Ray Chatterji @raychatterji.bsky.social · 27/02/2026
I can finally share my main postdoc project! It took a while but we finally got it out So if you want to read about an updated phylogeny for waterfowl and all the convergent evolution they get up to boy do I have a paper/thread for you academic.oup.com/sysbio/advan... 🪶🧪
academic.oup.com
Dietary specialization drives adaptation, convergence, and integration across the cranial and appendicular skeleton in Waterfowl (Anseriformes)
Abstract. Convergence provides strong evidence for adaptation, reflecting similar responses to recurring selection pressures. Waterfowl (order Anseriformes
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Alberta Claw @albertonykus.bsky.social · 26/02/2026
Drivers of skull and hindlimb skeleton evolution in waterfowl: academic.oup.com/sysbio/advan... 🪶🧪 (📷 @raychatterji.bsky.social et al.)
Digital models of the skull and hindlimb bones of a duck.
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Senator David Shoebridge @davidshoebridge.bsky.social · 19/02/2026
Pauline Hanson has spent decades demonising Muslims in the Senate with zero consequences, but put an anti-fascist poster on your bar wall and the AFP comes knocking. Labor's first scalp under their hate speech laws isn't a hate group and that says everything.
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Greg Jericho @grogsgamut.bsky.social · 11/02/2026
The Point is absolutely chock-full of great things to read today, including this by Kirsty Howe, the Executive Director of the Environment Centre NT: thepoint.com.au/opinions/260...
thepoint.com.au
The special fossil fuel industry carve out hidden deep in Australia's nature laws, revealed
To the casual observer, the long overdue reform to our federal environment laws – the Environment Protection and Biodiversity Conservation Act 1999 (Cth) (EPBC Act) – looked like a win for nature and ...
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Natacha @natacha.bsky.social · 21/12/2025
Worked hard to get this into Guardian Oz & big props to @fiercemum.bsky.social for setting it up & Melissa Davey for publishing it. She will doubtless get loads of hassle from transphobes for it, but it needs to be out there. Puberty Blocker bans harm trans kids, no-one should pretend they don’t.
theguardian.com
Puberty blocker bans in Queensland and NZ risk extreme harm to trans youth, UK expert warns
Sociologist who surveyed effect of 2024 UK ban says denial of gender-affirming care has left trans and non-binary children in ‘abject misery and severe distress’
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Ketan Joshi @ketanjoshi.co · 04/12/2025
HEY FRIENDS!! Did you know that Australia - #2 in the world for data centre investment - is now formally missing its climate targets thanks in large part to the resulting surge in power demand? It's massive news - @crikey.com.au let me NERD OUT to explain why: www.crikey.com.au/2025/12/04/d...
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Professor Euan Ritchie FAMS @euanritchie.bsky.social · 31/10/2025
But don't worry, Graeme Samuel is waving his finger at us and telling us it's all good... "Labor’s reforms to environmental law establish a new power to wave through any project a government wants, for any reason. And it can do so in secret." www.crikey.com.au/2025/10/31/l...
crikey.com.au
Buried detail in Labor's bill reveals how the government wants to override laws — and never tell you why
Labor's reforms to environmental law establish a new power to wave through any project a government wants, for any reason. And it can do so in secret.
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Ray Chatterji @raychatterji.bsky.social · 07/10/2025
I really wanted to like it, but that end like third did not land for me at alll
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Barbara Pocock @barbarapocock.bsky.social · 29/09/2025
I am deeply concerned about the treatment of people living in tents in the Southern Parklands in Adelaide. People are having their homes rolled up and removed while away, returning to find their important personal possessions gone. This is wrong, and unjust. 🧵
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Zoë “Baddie Proctor” Quinn @unburntwitch.com · 16/09/2025
btw Costco seems to have the cheapest updated COVID vax. You can get it without a card at the pharmacy and they do take walk-ins. If you’re also uninsured due to the massive amounts of layoffs this year, they also take this goodrx coupon to lower the cost of www.goodrx.com/comirnaty?sr...
goodrx.com
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Armita R. Manafzadeh @armanafzadeh.bsky.social · 02/09/2025
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 🦴🩻
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Ray Chatterji @raychatterji.bsky.social · 30/08/2025
They're definitely worth the watch, just a very different story to the original series
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Ray Chatterji @raychatterji.bsky.social · 30/08/2025
The rebuilds next?
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