Jorgo Ristevski
@jorgoristevski.bsky.social
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📥 218
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PhD in paleontology, specializing in crocodylomorph anatomy, taxonomy and evolution. He/Him/His
pinned post!
Hello Bluesky! My name is Jorgo Ristevski, and I am a paleontologist that studies crocodylomorphs.
about 1 year ago
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🐦 Ferris
13 days ago
Amber fossils ARE SOOO COOL. It's insane to me you can see a 100 million year old extinct creature in its full form. All of the DNA is long gone but its body is perfectly preserved as if it died only yesterday. Chimerarachne seen below, who had a cool tail whip!
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Literally Miguel 🇻🇪
16 days ago
Lolong, reliably the largest modern crocodilian ever measured by humans, and a tragic tale that shows what happens when rural populations mingle with the natural habitat of such mystical creatures they're not prepared for, RIP Lolong.
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WitmerLab at Ohio University
23 days ago
T. rex is more closely related to this little dinosaur (a hummingbird) than T. rex is to Allosaurus. Also, a hummingbird's humerus is way smaller than it's eyeball. Go home, evolution, you're drunk! 🦖
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Mark Young
26 days ago
@historicalbiology.bsky.social
- exciting new era has begun! Our first big step to becoming an Open Science & FAIR Journal. If anyone has any questions please do contact our Data Editor
@brooke-long-fox.bsky.social
add a skeleton here at some point
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Ausarchosaur
3 months ago
A couple more reptiles I want to appear in PhP Ice Age are Paludirex and Quinkana. Megalania and the saltwater crocodile weren’t the only large predatory reptiles of Pleistocene Australia. Here I’m going to focus on Paludirex.
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Armin Reindl
about 2 months ago
Of course we can't talk mekosuchines without mentioning Quinkana, a mysterious animal with a deep skull and serrated teeth often interpreted to have been terrestrial. Sadly, while I would have loved to see it, the lack of remains means its at a high risk to age badly.
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Armin Reindl
about 2 months ago
And the larger, more robust Paludirex vincenti, although much like Gunggamarandu its not entirely clear whether or not it actually reached into the Pleistocene or died during the Pliocene. For entertainment value tho I would have loved to see it featured.
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Armin Reindl
about 2 months ago
We've finally arrived at mekosuchines, a unique radiation exclusive to Australia and some islands. First lets talk about Paludirex, the swamp king. There are two species to be considered, the smaller Paludirex gracilis which was definitely Pleistocene
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Armin Reindl
about 2 months ago
What Gunggamarandu would offer is a unique branch of gavialoid on continental Australia. Phylogenies suggest it may have been a very early branch and gharials are an underappreciated part of Cenozoic Australian croc fauna, otherwise dominated by the next few taxa
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Armin Reindl
about 2 months ago
Instead, lets turn to our last gavialoid over on the Australian mainland: Gunggamarandu. Now two big caveats 1. it's not known from the most complete material 2. it's not entirely clear whether or not it was Pliocene or Pleistocene, like another croc later on
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Jay
2 months ago
The Kem Kem was home to a few terrestrial crocodylomorphs, and the 2m-long predator Hamadasuchus is one of the more intimidating ones! Size comparison below ⬇️
#sciart
#paleoart
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A great summary by Adam Yates on the "drop croc" topic. In short, there is no evidence to support tree climbing in any mekosuchine crocodylian. Also, using AI generated articles to further promote this unsubstantiated idea is a really bad look.
add a skeleton here at some point
3 months ago
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Historical Biology
3 months ago
Day 2 of
#2025SVP
announcements! We are delighted to be promoting 6 of our editorial board members: Arnau Bolet, Diego Castaneda, Masaya Iijima, Beniamino Mecozzi, Jorgo Ristevski, & Mohd Shafi Bhat, to associate editors!
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Check out this new paper about crocodylian, likely mekosuchine, eggshell fragments from the Eocene of Queensland. Great to see this material finally published.
doi.org/10.1080/0272...
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Australia’s oldest crocodylian eggshell: insights into the reproductive paleoecology of mekosuchines
Alongside large madtsoiid snakes, the largest known lizards, thylacoleonid marsupials and a range of other terrestrial carnivores, the now extinct mekosuchine crocodylians were significant predator...
https://doi.org/10.1080/02724634.2025.2560010
3 months ago
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Literally Miguel 🇻🇪
3 months ago
Barinasuchus arveloi: as an animal, you just cannot get any cooler than this
#paleoart
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Jay
3 months ago
This hatchling encounters a fully grown Tyrannosaurus rex on a winter morning - 12 metres long and 8 tonnes. The little one will never attain such colossal stature - he has a gloriously different destiny ahead of him.
#sciart
#paleoart
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Toothy Grin
3 months ago
Replica skeleton of Baru iylwenpeny on display at the Queensland Museum. This is part of the new Croc! exhibit.
#MuseumCore
#CrocQM
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Jorgo Ristevski
4 months ago
Happy
#FossilFriday
! Meet Paludirex, a BIG
#crocodile
from
#Australia
, one of many crocs coming from the Science Museum of Minnesota to
@badweatherbrew.bsky.social
for
#CroctoberFest
tomorrow (Sat, Sept 20)! We’ll be there 12-5pm with sooo much + I’m giving two talks, come raise a glass with us! 🐊🍺🐊
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Armin Reindl
3 months ago
For
#Croctober
Day 20 I want to shout out some fun etymology. To the left you see Paludirex, a large mekosuchine who's name means "swamp king". On the right is Gunggamarandu, which translates to "river boss". Both have been named by Jorgo Ristevski Art by Eleanor Pease
add a skeleton here at some point
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Literally Miguel 🇻🇪
4 months ago
Confractosuchus and the unsupervized infant child it swallowed before dying
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Nicole Boivin
4 months ago
Australia in the Anthropocene: Linking Past, Present and Future. Wonderful project workshop yesterday exploring the diverse methods our students and ECRs are using to examine how Australia's ecosystems have been shaped by people over the long-term and why it matters today.
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Armin Reindl
4 months ago
For
#Croctober
Day 11 we got Confractosuchus (art by Julius Csotonyi) Confracto once inhabited the Winton Formation of Australia, but unlike the tiny Isisfordia was sizable enough to even feed on dinosaurs. Which we know because we found the bones of an elasmarian in its stomach
add a skeleton here at some point
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Armin Reindl
4 months ago
#Croctober
Day 6 Heres a fun one from a research history POV. In 1997 researchers described a snout tip under the name Baru huberi and in 2016 skull elements were given the name Ultrastenos willisi Only last year did we recognize that both fossils belonged to a single individual
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Historical Biology
4 months ago
📣Editor spotlight Dr Jorgo Ristevski is an early career palaeontologist that studies crocodyliforms. He researches the extinct crocodylian clade Mekosuchinae. He has named and described several extinct crocodyliform genera and species, including Australia's giant gavialoid Gunggamarandu maunala 🐊
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Manusuchus
6 months ago
- A hungry adult female Iberosuchus sp. tries her luck ambushing a small Diplocynodon on a river bank - Created for the latest
@paleologica.bsky.social
video
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Literally Miguel 🇻🇪
7 months ago
Bretesuchus bonapartei, a real-life dragon
#paleoart
add a skeleton here at some point
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Literally Miguel 🇻🇪
8 months ago
CRACK! Razanandrongobe easily crushes a dinosaur's femur to feed from its nutritious marrow If Barinasuchus' skull rivaled the size of a Daspletosaurus, this crocodyliform's skull rivaled the size of a T. rex, and was arguably more specialized for bone-cracking
#paleoart
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New paper published today by
@weisbeckerbblab.bsky.social
and a big group of incredible collaborators! It has been a great honour to contribute to this study and be part of the Ozboneviz team.
add a skeleton here at some point
8 months ago
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_crocodiles
8 months ago
A last ditch attempt to save the Orinoco crocodile. 🐊
www.reuters.com/investigates...
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The last-ditch race to save the Orinoco crocodile
For decades, the men and women of the Venezuelan Crocodile Specialist Group have been raising younglings of the critically endangered species in captivity in a race against time to avoid its extinction
https://www.reuters.com/investigates/special-report/venezuela-orinoco-crocodiles/
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Jorgo Ristevski
Historical Biology
11 months ago
#FossilFriday
For our first social media posts, we highlight the iconic MB.Av.1010: a complete fossil of Archaeopteryx siemensii; a Late Jurassic species thought to be transitional between theropod dinosaurs & birds. On display at the Berlin Natural History Museum.
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Manusuchus
12 months ago
- Voay robustus - Commission I made for a very nice guy last week. If someone wants to commission me, Im open, as we say in Spain: Bueno, bonito y barato.
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Aubrey Keirnan
about 1 year ago
Check out our latest paper validating telencephalon and cerebellum endocast measurements in birds 🐦🦅🦆🦃🪿🐦⬛
royalsocietypublishing.org/doi/10.1098/...
@evolsara.bsky.social
@evoneuro.bsky.social
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Avian telencephalon and cerebellum volumes can be accurately estimated from digital brain endocasts | Biology Letters
For studies of the evolution of vertebrate brain anatomy and potentially associated behaviours, reconstructions of digital brain endocasts from computed tomography scans have revolutionized our capaci...
https://royalsocietypublishing.org/doi/10.1098/rsbl.2024.0596
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Manusuchus
about 1 year ago
- Sebecus icaeorhinus - For a prototype, I am quite happy with the result.
#Crocodylomorpha
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Riley Black 🏳️⚧️ 🦕
about 1 year ago
In the Late Triassic, croc relatives took on a broader array of forms and ecological roles than dinosaurs. The largest carnivores, for example, were big croc relatives like our chompy friend Fasolasuchus here. This life-size model is on display at Parque Nacional Talampaya, Argentina. 🧪
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Manusuchus
about 1 year ago
Lately I've been more focused on sculpting than 2D , but I felt like doing something fast to keep practice going. A Mekosuchinae indet. inspired by the latest study on its presence in Papua New Guinea. I really need to refocus on painting man.
#crocodilia
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Douglass S Rovinsky, PhD
about 1 year ago
A year or so ago,
@zieglertn.bsky.social
notified me that they've come across a fossil
#thylacine
from one of the caves in eastern Victoria - a BIG one. After hours of delicate prep work, I got to take a look at the beast (though apparently not take great photos... ).
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Tom Parker
about 2 years ago
Finished with one of the commissions I have been working on, the Australian Pleistocene crocodilian Quinkana fortirostrum.The commissioner requested the animal be reconstructed emphasising its terrestrial nature, though how terrestrial this animal actually was is debated.
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Pedro Godoy
about 1 year ago
New croc paper alert! 🐊🚨 In this new study led by my friend and colleague Thiago Fachini, we reassessed the cranial morphology and phylogenetic position of Barreirosuchus franciscoi, a peirosaurian from the Late Cretaceous of Brazil.
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
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New paper alert, just in time for
#FossilFriday
! A reevaluation of the
#crocodylian
fossils from the
#Pliocene
Otibanda Formation in Papua New Guinea. For a quick summary, check out the thread below 🧵👇 You can read the paper here (contact me if you need a PDF):
www.tandfonline.com/doi/full/10....
about 1 year ago
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Armin Reindl
about 1 year ago
EXCITING NEWS A new paper just dropped on the Otibanda ziphodont, a probable mekosuchine from the Pliocene of Papua New Guinea. I'll drop my thoughts once I manage to get my hands on a PDF, but I'm very much thrilled already.
www.tandfonline.com/doi/full/10....
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Reassessment of isolated reptilian teeth confirms the presence of ziphodont crocodylians during the Pliocene of New Guinea
The original publication on the Pliocene Otibanda Formation in Papua New Guinea briefly reported on crocodyliform fossils, including isolated teeth that were tentatively assigned to the notosuchian...
https://www.tandfonline.com/doi/full/10.1080/08912963.2024.2429585
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necro
about 1 year ago
I see lots of people who can't readily tell apart the skulls of Melanosuchus and Alligator, so I decided to make this comparison showcasing the differences between them. The two largest of the alligatorids side by side.
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Manusuchus
about 1 year ago
Ive been thinking about making a detailed/realistic illustration of Quinkana, since theres a lot of misinformation about it. Which species do you think best represents the genus, Q. timara or Q. fortirostrum?
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Yohan Pochat-Cottilloux
about 1 year ago
New
#crocpaper
alert ! 🐊🚨 Fossil crocodylomorphs lived in a wide diversity of environments compared to extant ones. This review (my first one !) focuses on those adaptations, from very early Triassic forms to crown group eusuchians !
doi.org/10.1002/ar.2...
in
@anatrecord.bsky.social
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A review of the non‐semiaquatic adaptations of extinct crocodylomorphs throughout their fossil record
Crocodylomorphs constitute a clade of archosaurs that have thrived since the Mesozoic until today and have survived numerous major biological crises. Contrary to historic belief, their semiaquatic ex...
https://doi.org/10.1002/ar.25586
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Manusuchus
about 1 year ago
- Sutekhsuchus dowsoni - An Egyptian Miocene gavialoid
#crocodilia
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Darren Naish
about 1 year ago
This is not a drill, a mummified sabretooth cat has been published from the
#Pleistocene
permafrost of Russia. It's a Homotherium cub! The team (Lopatin et al.) reckon it's Homotherium latidens. It's too young to have enlarged upper canines. Paper is OA ...
www.nature.com/articles/s41...
cont...
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Mummy of a juvenile sabre-toothed cat Homotherium latidens from the Upper Pleistocene of Siberia - Scientific Reports
Scientific Reports - Mummy of a juvenile sabre-toothed cat Homotherium latidens from the Upper Pleistocene of Siberia
https://www.nature.com/articles/s41598-024-79546-1
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Riley Black 🏳️⚧️ 🦕
about 1 year ago
I love this fossil of Alligator prenasalis, a ~35 million-year-old relative of today’s alligators that lived in what’s now South Dakota. You can track how climates changed in the Cenozoic by where crocodylians lived, from the high latitudes of the Arctic down to their current range. 🧪
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Hello Bluesky! My name is Jorgo Ristevski, and I am a paleontologist that studies crocodylomorphs.
about 1 year ago
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