Uri Wolkowski
@deinocurious.bsky.social
M.Sc. student in Evolutionary and Environmental Biology | Studying hartebeest 🐐 ancient DNA 🧬 🦴 and Ecological Niche Modelling 🌍 🌧️| likes hiking, birding, and all wildlife living and extinct 🏔️ 🦅 🦤 🐆 🦣
Pinned
I'm glad to share my M.Sc thesis about the extinct Levantine #hartebeest , now published and #openaccess ! Link following 🧵
The hartebeest is a staple antelope of eastern and southern African savannahs. However, the species had a far wider past distribution 1/13
The hartebeest is a staple antelope of eastern and southern African savannahs. However, the species had a far wider past distribution 1/13
For this #FossilFriday the giant Cenozoic boa like snake Madtsoia bai, from the Eocene Sarmiento formation of Argentina. At an estimated 9 meters or more, this was a very big snake. Species in the genus have been named before and after the K/Pg boundary.
#snakes #fossil #museum #paleo
#snakes #fossil #museum #paleo
December 19, 2025 at 2:06 PM
For this #FossilFriday the giant Cenozoic boa like snake Madtsoia bai, from the Eocene Sarmiento formation of Argentina. At an estimated 9 meters or more, this was a very big snake. Species in the genus have been named before and after the K/Pg boundary.
#snakes #fossil #museum #paleo
#snakes #fossil #museum #paleo
Today is my final day in Argentina (and South America), so for #FossilFriday - one of the most iconic dinosaurs of Argentina, Carnotaurus sastrei.
Casts of this theropod are displayed in any major museum in the country, but the real fossils are housed here at the MACN.
#dinosaur
Casts of this theropod are displayed in any major museum in the country, but the real fossils are housed here at the MACN.
#dinosaur
December 12, 2025 at 10:55 PM
Today is my final day in Argentina (and South America), so for #FossilFriday - one of the most iconic dinosaurs of Argentina, Carnotaurus sastrei.
Casts of this theropod are displayed in any major museum in the country, but the real fossils are housed here at the MACN.
#dinosaur
Casts of this theropod are displayed in any major museum in the country, but the real fossils are housed here at the MACN.
#dinosaur
Reposted by Uri Wolkowski
#FossilFriday and #SciArt
The maxilla of various Tyrannosaurus specimens (perhaps or not "rex") have several peculiar, and possibly diagnostic, surface features relating to their integument (skin, horn, whatnot).
We begin with, and perhaps best with, AMNH 5027, the "archetypal" T. rex skull.
The maxilla of various Tyrannosaurus specimens (perhaps or not "rex") have several peculiar, and possibly diagnostic, surface features relating to their integument (skin, horn, whatnot).
We begin with, and perhaps best with, AMNH 5027, the "archetypal" T. rex skull.
December 6, 2025 at 1:20 AM
#FossilFriday and #SciArt
The maxilla of various Tyrannosaurus specimens (perhaps or not "rex") have several peculiar, and possibly diagnostic, surface features relating to their integument (skin, horn, whatnot).
We begin with, and perhaps best with, AMNH 5027, the "archetypal" T. rex skull.
The maxilla of various Tyrannosaurus specimens (perhaps or not "rex") have several peculiar, and possibly diagnostic, surface features relating to their integument (skin, horn, whatnot).
We begin with, and perhaps best with, AMNH 5027, the "archetypal" T. rex skull.
Non-stop rain since the morning, but yesterday there were much nicer views and weather!
Iguazu falls, Argentina
Iguazu falls, Argentina
December 8, 2025 at 4:21 PM
Non-stop rain since the morning, but yesterday there were much nicer views and weather!
Iguazu falls, Argentina
Iguazu falls, Argentina
Traveling through South America, I've seen many fossils big and small - so many that I should start my own #FossilFriday posts!
Macrauchenia, one of the last and largest of the litopterns, a South American lineage that is totally extinct. Apparently, Macrauchenia had a remarkable nose ->
Macrauchenia, one of the last and largest of the litopterns, a South American lineage that is totally extinct. Apparently, Macrauchenia had a remarkable nose ->
December 5, 2025 at 11:48 PM
Traveling through South America, I've seen many fossils big and small - so many that I should start my own #FossilFriday posts!
Macrauchenia, one of the last and largest of the litopterns, a South American lineage that is totally extinct. Apparently, Macrauchenia had a remarkable nose ->
Macrauchenia, one of the last and largest of the litopterns, a South American lineage that is totally extinct. Apparently, Macrauchenia had a remarkable nose ->
And of course, many colleagues and friends have helped me in completing this project, but most of all my supervisors, Meirav Meiri and Nimrod Marom @nxmarom.bsky.social - who introduced me to this fantastic antelope, to their fields of research and supported me along the way 🙏🏼
I'm glad to share my M.Sc thesis about the extinct Levantine #hartebeest , now published and #openaccess ! Link following 🧵
The hartebeest is a staple antelope of eastern and southern African savannahs. However, the species had a far wider past distribution 1/13
The hartebeest is a staple antelope of eastern and southern African savannahs. However, the species had a far wider past distribution 1/13
December 3, 2025 at 3:09 AM
And of course, many colleagues and friends have helped me in completing this project, but most of all my supervisors, Meirav Meiri and Nimrod Marom @nxmarom.bsky.social - who introduced me to this fantastic antelope, to their fields of research and supported me along the way 🙏🏼
I'm glad to share my M.Sc thesis about the extinct Levantine #hartebeest , now published and #openaccess ! Link following 🧵
The hartebeest is a staple antelope of eastern and southern African savannahs. However, the species had a far wider past distribution 1/13
The hartebeest is a staple antelope of eastern and southern African savannahs. However, the species had a far wider past distribution 1/13
December 3, 2025 at 1:18 AM
I'm glad to share my M.Sc thesis about the extinct Levantine #hartebeest , now published and #openaccess ! Link following 🧵
The hartebeest is a staple antelope of eastern and southern African savannahs. However, the species had a far wider past distribution 1/13
The hartebeest is a staple antelope of eastern and southern African savannahs. However, the species had a far wider past distribution 1/13
Trying to get back to some activity on bluesky!
I finished my M.Sc. earlier this year and for the past 6 months I've been travelling through South America, north to south.
I've been to amazing places: the Galápagos, the Amazon river and rainforest, trekking the Peruvian Andes, and many others...
I finished my M.Sc. earlier this year and for the past 6 months I've been travelling through South America, north to south.
I've been to amazing places: the Galápagos, the Amazon river and rainforest, trekking the Peruvian Andes, and many others...
November 26, 2025 at 6:13 PM
Trying to get back to some activity on bluesky!
I finished my M.Sc. earlier this year and for the past 6 months I've been travelling through South America, north to south.
I've been to amazing places: the Galápagos, the Amazon river and rainforest, trekking the Peruvian Andes, and many others...
I finished my M.Sc. earlier this year and for the past 6 months I've been travelling through South America, north to south.
I've been to amazing places: the Galápagos, the Amazon river and rainforest, trekking the Peruvian Andes, and many others...
Reposted by Uri Wolkowski
Today's bombshell in @nature.com by Lindsay Zanno & James Napoli @jgn-paleo.bsky.social (bit.ly/4qBE6ng) shows that putative juvvy T. rex fossils actually are Nanotyrannus. I reviewed the manuscript, so Nature invited me to write the News & Views commentary. Free link: rdcu.be/eNv94 🦖
October 30, 2025 at 9:43 PM
Today's bombshell in @nature.com by Lindsay Zanno & James Napoli @jgn-paleo.bsky.social (bit.ly/4qBE6ng) shows that putative juvvy T. rex fossils actually are Nanotyrannus. I reviewed the manuscript, so Nature invited me to write the News & Views commentary. Free link: rdcu.be/eNv94 🦖
Reposted by Uri Wolkowski
Noooo Jane Goodall died!
She was one of the best exemplars of something I believe to my very core: that empathy is often an essential ingredient in good science.
She was one of the best exemplars of something I believe to my very core: that empathy is often an essential ingredient in good science.
October 1, 2025 at 7:01 PM
Noooo Jane Goodall died!
She was one of the best exemplars of something I believe to my very core: that empathy is often an essential ingredient in good science.
She was one of the best exemplars of something I believe to my very core: that empathy is often an essential ingredient in good science.
Reposted by Uri Wolkowski
Just came out of two hours of teaching early humans and primates to hear that Jane Goodall has sadly died. The legacy and impact of this human is beyond measure. She brought us closer to each other, closer to primates and face to face with our evolutionary inheritance.
October 1, 2025 at 6:31 PM
Just came out of two hours of teaching early humans and primates to hear that Jane Goodall has sadly died. The legacy and impact of this human is beyond measure. She brought us closer to each other, closer to primates and face to face with our evolutionary inheritance.
Reposted by Uri Wolkowski
I hope people spend days and days talking about her (she is 10,000,000 times more important than Charlie Kirk) and the amazing work she did.
This photo will always be so powerful and as defining of who we all can be.
Be like Jane Goodall.
Photographer: Hugo van Lawick
This photo will always be so powerful and as defining of who we all can be.
Be like Jane Goodall.
Photographer: Hugo van Lawick
October 1, 2025 at 7:49 PM
I hope people spend days and days talking about her (she is 10,000,000 times more important than Charlie Kirk) and the amazing work she did.
This photo will always be so powerful and as defining of who we all can be.
Be like Jane Goodall.
Photographer: Hugo van Lawick
This photo will always be so powerful and as defining of who we all can be.
Be like Jane Goodall.
Photographer: Hugo van Lawick
Reposted by Uri Wolkowski
I am filled with so much love and gratitude that I cannot grieve. Dr. Goodall worked tirelessly in her gentle, hopeful way for a better world for all life on Earth. She has laid down her field notebook for the last time; now it is for us to fill with wonder, joy, and connection, into infinity.
Jane Goodall's work insisting, with evidence from her brilliant and tenacious fieldwork, that we were not so separate from animals, and they were much more like us than the Eurocentric theorists asserted, was so important.
October 1, 2025 at 7:59 PM
I am filled with so much love and gratitude that I cannot grieve. Dr. Goodall worked tirelessly in her gentle, hopeful way for a better world for all life on Earth. She has laid down her field notebook for the last time; now it is for us to fill with wonder, joy, and connection, into infinity.
Reposted by Uri Wolkowski
I think a lot about what Carl Sagan said in one of his final interviews.
May 4, 2025 at 6:21 AM
I think a lot about what Carl Sagan said in one of his final interviews.
Reposted by Uri Wolkowski
Target ended its DEI programs, Black ppl got pissed, organized a boycott that ended up plunging Target’s earnings and now the CEO’s pay is cut. Brilliant
May 3, 2025 at 4:06 PM
Target ended its DEI programs, Black ppl got pissed, organized a boycott that ended up plunging Target’s earnings and now the CEO’s pay is cut. Brilliant
Reposted by Uri Wolkowski
This is just a short love letter to PubMed:
absolutely one of the best things US agencies have ever done for science.
'When I were a lad': we had databases of articles (Science Citation Index Expanded or Medline) but the only way to access text was to find the physical journal then photocopy it.
absolutely one of the best things US agencies have ever done for science.
'When I were a lad': we had databases of articles (Science Citation Index Expanded or Medline) but the only way to access text was to find the physical journal then photocopy it.
January 27, 2025 at 5:14 PM
This is just a short love letter to PubMed:
absolutely one of the best things US agencies have ever done for science.
'When I were a lad': we had databases of articles (Science Citation Index Expanded or Medline) but the only way to access text was to find the physical journal then photocopy it.
absolutely one of the best things US agencies have ever done for science.
'When I were a lad': we had databases of articles (Science Citation Index Expanded or Medline) but the only way to access text was to find the physical journal then photocopy it.
Cyprus warblers - tiny, beautiful birbs. Caught them in a migration stopover, between the Nubian desert to Cyprus
February 26, 2025 at 6:26 AM
Cyprus warblers - tiny, beautiful birbs. Caught them in a migration stopover, between the Nubian desert to Cyprus
A poignant #WomenInScience day for the macroevolutionary community, as we are informed that Elizabeth Vrba passed away this week. All who knew her tell of a brilliant, innovative thinker and skilled, pioneering paleontologist. My current research is directly and proudly influenced by hers.
R.I.P.
R.I.P.
February 11, 2025 at 8:15 PM
A poignant #WomenInScience day for the macroevolutionary community, as we are informed that Elizabeth Vrba passed away this week. All who knew her tell of a brilliant, innovative thinker and skilled, pioneering paleontologist. My current research is directly and proudly influenced by hers.
R.I.P.
R.I.P.
Today is Iguanodon's 200th anniversary. A good chance to focus on little positivity among it all.
My passion for extinct life and the natural world at large, began with Disney's Dinosaur (2000) and the protagonist, Aladar the Iguanodon. My identity today was set in course by his story.
My passion for extinct life and the natural world at large, began with Disney's Dinosaur (2000) and the protagonist, Aladar the Iguanodon. My identity today was set in course by his story.
February 10, 2025 at 8:59 PM
Today is Iguanodon's 200th anniversary. A good chance to focus on little positivity among it all.
My passion for extinct life and the natural world at large, began with Disney's Dinosaur (2000) and the protagonist, Aladar the Iguanodon. My identity today was set in course by his story.
My passion for extinct life and the natural world at large, began with Disney's Dinosaur (2000) and the protagonist, Aladar the Iguanodon. My identity today was set in course by his story.
Reposted by Uri Wolkowski
Read it slowly and understand it. 😳🥺
Repost 👇🏾 👇🏾
Repost 👇🏾 👇🏾
February 10, 2025 at 1:39 AM
Read it slowly and understand it. 😳🥺
Repost 👇🏾 👇🏾
Repost 👇🏾 👇🏾
Reposted by Uri Wolkowski
What scientific discovery absolutely blew you away? Of course there are many for me, but this one comes to mind
(one I discuss in ENDS OF THE EARTH): freshwater lakes, some the size of the Great Lakes, buried under 2 or more miles of ice in Antarctica. With living creatures inside, no less.
(one I discuss in ENDS OF THE EARTH): freshwater lakes, some the size of the Great Lakes, buried under 2 or more miles of ice in Antarctica. With living creatures inside, no less.
February 9, 2025 at 7:04 PM
What scientific discovery absolutely blew you away? Of course there are many for me, but this one comes to mind
(one I discuss in ENDS OF THE EARTH): freshwater lakes, some the size of the Great Lakes, buried under 2 or more miles of ice in Antarctica. With living creatures inside, no less.
(one I discuss in ENDS OF THE EARTH): freshwater lakes, some the size of the Great Lakes, buried under 2 or more miles of ice in Antarctica. With living creatures inside, no less.
Reposted by Uri Wolkowski
Gene editing technology began by people studying salt marshes. Ozempic began by folks studying the venom of Gila Monsters. Support for basic science has empowered us to understand our world. Tethering it to applications health has transformed and saved countless lives.
February 8, 2025 at 1:45 PM
Gene editing technology began by people studying salt marshes. Ozempic began by folks studying the venom of Gila Monsters. Support for basic science has empowered us to understand our world. Tethering it to applications health has transformed and saved countless lives.
'Australopithecus africanus: The Man-Ape of South Africa'
100 years since, it still holds the record for coolest scientific article title
100 years since, it still holds the record for coolest scientific article title
Celebrating 100 years of Australopithecus africanus and palaeoanthropology in Africa www.nature.com/articles/d41...
Out of Africa: celebrating 100 years of human-origins research
A landmark study reporting the discovery of Australopithecus africanus one century ago put the African continent at the centre of the story of humanity.
www.nature.com
February 5, 2025 at 6:26 PM
'Australopithecus africanus: The Man-Ape of South Africa'
100 years since, it still holds the record for coolest scientific article title
100 years since, it still holds the record for coolest scientific article title
Metazooa
Become an evolutionary detective to find the Mystery Animal!
metazooa.com
January 25, 2025 at 7:53 PM