J Pardo
@jdpardo.bsky.social
NSF EAR Postdoctoral Fellow at the Field Museum of Natural History. Tetrapods in deep time: evolution, development, and paleontology. Also: mountains.
Reposted by J Pardo
I am seriously considering setting aside a large percentage of lab class time for report writing, because the choices are making data analysis and writing an in-class activity or just cutting them because they're meaningless assignments.
this is hilarious and miserable. just so tech bros can have their dystopia moment, students have to lose all accessibility provided by remote technology and we the professors lose the flexibility and convenience. but progress, amirite?!
For the moment, there is no alternative.
November 24, 2025 at 11:13 PM
I am seriously considering setting aside a large percentage of lab class time for report writing, because the choices are making data analysis and writing an in-class activity or just cutting them because they're meaningless assignments.
Heterostracan-inspired design
November 24, 2025 at 6:48 PM
Heterostracan-inspired design
Burgess-type preservation of Ediacarans. This is perhaps the most important paleo paper you will read in a while.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
The terminal Ediacaran Tongshan Lagerstätte from South China - Nature Communications
Here, the authors present Ediacaran fossils from the Tongshan Lagerstätte (South China), including Burgess Shale-type rangeomorphs preserved both with fronds and holdfasts. They use sedimentary and ch...
www.nature.com
November 24, 2025 at 1:54 PM
Burgess-type preservation of Ediacarans. This is perhaps the most important paleo paper you will read in a while.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by J Pardo
The holotype of #Stenokranio boldi at the Geoskop Urweltmuseum #fossilfriday
November 21, 2025 at 3:02 PM
The holotype of #Stenokranio boldi at the Geoskop Urweltmuseum #fossilfriday
Reposted by J Pardo
With this working, as a first test we took two plasmids, identical save for 8 point mutations changing the color, and competed them against one another. Here’s a video of what it looked like when we activated the recombinase. You can see the two compete in real time: 4/
November 20, 2025 at 9:42 PM
With this working, as a first test we took two plasmids, identical save for 8 point mutations changing the color, and competed them against one another. Here’s a video of what it looked like when we activated the recombinase. You can see the two compete in real time: 4/
Reposted by J Pardo
Very excited to share my exploration of the phylogenetics of early ray-finned fishes, out today in the Anatomical Record! Really busy day but I’ll have more info shortly.
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
An ontological morphological phylogenetic framework for living and extinct ray‐finned fishes (Actinopterygii)
The ray-finned fishes include one out of every two species of living vertebrates on Earth and have an abundant fossil record stretching 380 million years into the past. The division of systematic kno...
anatomypubs.onlinelibrary.wiley.com
November 17, 2025 at 12:52 PM
Very excited to share my exploration of the phylogenetics of early ray-finned fishes, out today in the Anatomical Record! Really busy day but I’ll have more info shortly.
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
Reposted by J Pardo
🐠 Medaka (Oryzias latipes) ✨ A tiny fish with big developmental insights! 🧬 Medaka is perfect for studying sex determination, germ cell development, pigmentation, and environmental effects on embryos 📸 Image by Philipp Keller #ModelMonday #DevBio #EvoDevo
November 17, 2025 at 7:08 PM
🐠 Medaka (Oryzias latipes) ✨ A tiny fish with big developmental insights! 🧬 Medaka is perfect for studying sex determination, germ cell development, pigmentation, and environmental effects on embryos 📸 Image by Philipp Keller #ModelMonday #DevBio #EvoDevo
Reposted by J Pardo
An early Triassic bone bed excavated at 78°N changes the story about how marine life recovered after the most cataclysmic extinction in Earth history ~252 million years ago.
Learn more in this week's issue of Science: https://scim.ag/48bLsGI
Learn more in this week's issue of Science: https://scim.ag/48bLsGI
November 13, 2025 at 7:05 PM
An early Triassic bone bed excavated at 78°N changes the story about how marine life recovered after the most cataclysmic extinction in Earth history ~252 million years ago.
Learn more in this week's issue of Science: https://scim.ag/48bLsGI
Learn more in this week's issue of Science: https://scim.ag/48bLsGI
Reposted by J Pardo
#temnovember2025 day 10: Conjunctio
We return to #temnovember with a little guy, #Conjunctio, a small #dissorophid from lower permian on New Mexico. Also its name soounds really close to spell in spanish, so Magic Frog;)
#paleoart #sciart #temnospondyl #amphibian #permic
We return to #temnovember with a little guy, #Conjunctio, a small #dissorophid from lower permian on New Mexico. Also its name soounds really close to spell in spanish, so Magic Frog;)
#paleoart #sciart #temnospondyl #amphibian #permic
November 10, 2025 at 11:52 PM
#temnovember2025 day 10: Conjunctio
We return to #temnovember with a little guy, #Conjunctio, a small #dissorophid from lower permian on New Mexico. Also its name soounds really close to spell in spanish, so Magic Frog;)
#paleoart #sciart #temnospondyl #amphibian #permic
We return to #temnovember with a little guy, #Conjunctio, a small #dissorophid from lower permian on New Mexico. Also its name soounds really close to spell in spanish, so Magic Frog;)
#paleoart #sciart #temnospondyl #amphibian #permic
Reposted by J Pardo
Scientific breakthroughs are rarely unique; someone else would’ve made them soon enough. But when prominent scientists cause harm, that harm isn’t inevitable; the world might simply have been better had the harm not been inflicted.
liorpachter.wordpress.com/2018/05/18/j...
liorpachter.wordpress.com/2018/05/18/j...
James Watson in his own words
“Some anti-Semitism is justified” “Whenever you interview fat people, you feel bad, because you know you’re not going to hire them” “Japan should be bombed for d…
liorpachter.wordpress.com
November 8, 2025 at 4:29 AM
Scientific breakthroughs are rarely unique; someone else would’ve made them soon enough. But when prominent scientists cause harm, that harm isn’t inevitable; the world might simply have been better had the harm not been inflicted.
liorpachter.wordpress.com/2018/05/18/j...
liorpachter.wordpress.com/2018/05/18/j...
Reposted by J Pardo
It is a German conceit, that the vertebræ are absolutely undeveloped skulls.
November 6, 2025 at 1:47 AM
It is a German conceit, that the vertebræ are absolutely undeveloped skulls.
Reposted by J Pardo
(Recent art) Ceratodus nargan Illustration!
Ceratodus is a wide spread prehistoric lungfish species that is related to the extant queensland lungfish. Here lies a species in the Early Cretaceous of Southern Victoria, Australia, in the Euremella formation.
#paleoart #sciart #illustraation #fishart
Ceratodus is a wide spread prehistoric lungfish species that is related to the extant queensland lungfish. Here lies a species in the Early Cretaceous of Southern Victoria, Australia, in the Euremella formation.
#paleoart #sciart #illustraation #fishart
November 5, 2025 at 7:32 AM
(Recent art) Ceratodus nargan Illustration!
Ceratodus is a wide spread prehistoric lungfish species that is related to the extant queensland lungfish. Here lies a species in the Early Cretaceous of Southern Victoria, Australia, in the Euremella formation.
#paleoart #sciart #illustraation #fishart
Ceratodus is a wide spread prehistoric lungfish species that is related to the extant queensland lungfish. Here lies a species in the Early Cretaceous of Southern Victoria, Australia, in the Euremella formation.
#paleoart #sciart #illustraation #fishart
Reposted by J Pardo
New paper in JSP: Gonçalves & Luccisano reassess the taxonomy and phylogeny of Aeduellidae, Carboniferous ray-finned fish from Decazeville Basin, France 🐟
Results hint at a North American origin… or convergent traits that muddy the family waters.
Read the study: buff.ly/huDEsiU #paleosky #fossilfish
Results hint at a North American origin… or convergent traits that muddy the family waters.
Read the study: buff.ly/huDEsiU #paleosky #fossilfish
November 3, 2025 at 10:53 AM
New paper in JSP: Gonçalves & Luccisano reassess the taxonomy and phylogeny of Aeduellidae, Carboniferous ray-finned fish from Decazeville Basin, France 🐟
Results hint at a North American origin… or convergent traits that muddy the family waters.
Read the study: buff.ly/huDEsiU #paleosky #fossilfish
Results hint at a North American origin… or convergent traits that muddy the family waters.
Read the study: buff.ly/huDEsiU #paleosky #fossilfish
Reposted by J Pardo
One of the largest temmnospondyls ever to exist: the gigantic Koolasuchus was also the last non-lissamphibian temnospondyl to exist. It survived into the Early Cretaceous of Australia when all other stereospondyls were long gone
#temnospondyls #paleoart
#temnospondyls #paleoart
November 3, 2025 at 4:49 PM
One of the largest temmnospondyls ever to exist: the gigantic Koolasuchus was also the last non-lissamphibian temnospondyl to exist. It survived into the Early Cretaceous of Australia when all other stereospondyls were long gone
#temnospondyls #paleoart
#temnospondyls #paleoart
RRR is so mad he's making up sutures and bones. No idea how this made it through peer review. To quote a totally unacceptable comment in a referee report by the second author on this paper, "perhaps it was pal reviewed"
Re-evaluation of the Carboniferous tetrapod Asaphestera platyris with comments on the amniote fauna of the Joggins Formation, Canada onlinelibrary.wiley.com/doi/10.1002/... #PapersinPalaeontology @morphobank.bsky.social
October 31, 2025 at 6:25 PM
RRR is so mad he's making up sutures and bones. No idea how this made it through peer review. To quote a totally unacceptable comment in a referee report by the second author on this paper, "perhaps it was pal reviewed"
Loving this Nanotyrannus news. From a philsci perspective, the discourse around small Maastrichtian tyrannosaurs has deviated profoundly from the more widely applied standards of the field, so seeing this debate finally settled is very satisfying.
October 30, 2025 at 3:41 PM
Loving this Nanotyrannus news. From a philsci perspective, the discourse around small Maastrichtian tyrannosaurs has deviated profoundly from the more widely applied standards of the field, so seeing this debate finally settled is very satisfying.
Reposted by J Pardo
We need to be more honest about the nature of the job market with students, and one way of doing that is by showing them the data. Turns out, we also need better data collection on (at least US) paleo careers www.cambridge.org/core/journal...
October 30, 2025 at 5:15 AM
We need to be more honest about the nature of the job market with students, and one way of doing that is by showing them the data. Turns out, we also need better data collection on (at least US) paleo careers www.cambridge.org/core/journal...
Reposted by J Pardo
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Join MBL’s world-renowned Advanced Research Training Courses, where scientists from around the globe come together to explore new ideas, master cutting-edge techniques, and become part of a dynamic network.
➡️Apply today: go.mbl.edu/courses
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go.mbl.edu
October 28, 2025 at 6:08 PM
🔬 Applications are now open!
Join MBL’s world-renowned Advanced Research Training Courses, where scientists from around the globe come together to explore new ideas, master cutting-edge techniques, and become part of a dynamic network.
➡️Apply today: go.mbl.edu/courses
Join MBL’s world-renowned Advanced Research Training Courses, where scientists from around the globe come together to explore new ideas, master cutting-edge techniques, and become part of a dynamic network.
➡️Apply today: go.mbl.edu/courses
This is a super cool paper from the Hejnol group that should be a top reference for a lot of animal biodiversity/zoology courses.....origins of the bilaterian anus from the gonopore. Just drop this figure right into your slide deck.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
October 27, 2025 at 5:49 PM
This is a super cool paper from the Hejnol group that should be a top reference for a lot of animal biodiversity/zoology courses.....origins of the bilaterian anus from the gonopore. Just drop this figure right into your slide deck.
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by J Pardo
But shall this crazed old man be tamely suffered to drag a whole ship’s company down to doom with him?
October 27, 2025 at 8:47 AM
But shall this crazed old man be tamely suffered to drag a whole ship’s company down to doom with him?
Reposted by J Pardo
This #fossilfriday , I wanted to post a very classic Pittsburgh fossil. This is Fedexia striegeli. It’s known from only one specimen (shown here) that was collected during a geology field trip to a roadcut near Pittsburgh in 2004. I credit it as the specimen that made me interested in local verts!
October 24, 2025 at 11:18 PM
This #fossilfriday , I wanted to post a very classic Pittsburgh fossil. This is Fedexia striegeli. It’s known from only one specimen (shown here) that was collected during a geology field trip to a roadcut near Pittsburgh in 2004. I credit it as the specimen that made me interested in local verts!
Reposted by J Pardo
Trump slammed for demolishing White House before Canadians could burn it down again
Trump slammed for demolishing White House before Canadians could burn it down again
WASHINGTON D.C. - US President Donald Trump's planned White House ballroom, requiring the complete demolition of the historic East Wing, is being criticized by Canadians who will now never get to light the building on fire for a second time since the War of 1812.
www.thebeaverton.com
October 23, 2025 at 9:57 PM
Trump slammed for demolishing White House before Canadians could burn it down again
Reposted by J Pardo
New species of #coelacanth from the Early Triassic of China just dropped. Say hello to Whiteia anniae.🐟🧪 #FossilFriday
www.nature.com/articles/s41...
www.nature.com/articles/s41...
October 24, 2025 at 5:42 PM
New species of #coelacanth from the Early Triassic of China just dropped. Say hello to Whiteia anniae.🐟🧪 #FossilFriday
www.nature.com/articles/s41...
www.nature.com/articles/s41...
Reposted by J Pardo
People on twitter are losing their minds over this, including several scientists who I have to assume have either brain poisoned themselves or were always like this. People don't always cite what's best; they cite what they know & researchers from historically excluded communities get the short end.
October 24, 2025 at 1:58 PM
People on twitter are losing their minds over this, including several scientists who I have to assume have either brain poisoned themselves or were always like this. People don't always cite what's best; they cite what they know & researchers from historically excluded communities get the short end.