PaleoJim
@paleojim.bsky.social
State Paleontologist for Utah; exploring and promoting the history of life in our southwestern deserts for the public good and the wonder of it all
Susannah Maidmen presentation next week (Tuesday 13 January 5 -7 PM GT & 10-12 AM MT) online, via Zoom.
"Bizarre Dinosaurs from the Middle Jurassic of Morocco: Implications for Armoured Dinosaur Evolution". www.bilnas.org/event/bizarr...
Register in advance. us02web.zoom.us/webinar/regi...
"Bizarre Dinosaurs from the Middle Jurassic of Morocco: Implications for Armoured Dinosaur Evolution". www.bilnas.org/event/bizarr...
Register in advance. us02web.zoom.us/webinar/regi...
Bizarre Dinosaurs from the Middle Jurassic of Morocco: Implications for Armoured Dinosaur Evolution by Susannah Maidment
The Middle Jurassic is a critical time in the evolution of the dinosaurs because it witnessed the radiation of many groups, giving rise to a diversity of familiar forms such as the plated stegosaurs a...
www.bilnas.org
January 8, 2026 at 5:13 PM
Susannah Maidmen presentation next week (Tuesday 13 January 5 -7 PM GT & 10-12 AM MT) online, via Zoom.
"Bizarre Dinosaurs from the Middle Jurassic of Morocco: Implications for Armoured Dinosaur Evolution". www.bilnas.org/event/bizarr...
Register in advance. us02web.zoom.us/webinar/regi...
"Bizarre Dinosaurs from the Middle Jurassic of Morocco: Implications for Armoured Dinosaur Evolution". www.bilnas.org/event/bizarr...
Register in advance. us02web.zoom.us/webinar/regi...
Reposted by PaleoJim
To Denmark and Greenland: 100 Danish forces deployed to Desert Storm. They stood with us defending sovereignty and international law. Now I watch Stephen Miller mock you on TV while my government threatens to invade Greenland. I'm a veteran and I'm ashamed beyond words. I'm so sorry.
January 6, 2026 at 4:12 AM
Hey, the newest issue of the UGS' Survey Notes is online. Check it out: geology.utah.gov/map-pub/surv...
@utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @jeremybroberts.bsky.social @agu.org @geosociety.bsky.social @bgs.ac.uk @scinews.bsky.social @geolsoc.bsky.social
@utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @jeremybroberts.bsky.social @agu.org @geosociety.bsky.social @bgs.ac.uk @scinews.bsky.social @geolsoc.bsky.social
Survey Notes - Utah Geological Survey
Survey Notes is an informative, non-technical magazine on noteworthy and interesting geologic topics in Utah. It is the official UGS newsletter and is produced three times a year.
geology.utah.gov
January 7, 2026 at 10:00 PM
Hey, the newest issue of the UGS' Survey Notes is online. Check it out: geology.utah.gov/map-pub/surv...
@utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @jeremybroberts.bsky.social @agu.org @geosociety.bsky.social @bgs.ac.uk @scinews.bsky.social @geolsoc.bsky.social
@utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @jeremybroberts.bsky.social @agu.org @geosociety.bsky.social @bgs.ac.uk @scinews.bsky.social @geolsoc.bsky.social
Great Basin Chapter of the Utah Friends of Paleontology meeting on Thursday, Jan. 13, 2026, at 7:00 PM Mt. Time. Adrian Boeye is our speaker presenting his talk "Tyrannosaurs Ran like an 8 Tonne Bird."
Online only. The link for the virtual meeting is meet.google.com/gbm-ecma-vyu
Online only. The link for the virtual meeting is meet.google.com/gbm-ecma-vyu
January 7, 2026 at 9:47 PM
Great Basin Chapter of the Utah Friends of Paleontology meeting on Thursday, Jan. 13, 2026, at 7:00 PM Mt. Time. Adrian Boeye is our speaker presenting his talk "Tyrannosaurs Ran like an 8 Tonne Bird."
Online only. The link for the virtual meeting is meet.google.com/gbm-ecma-vyu
Online only. The link for the virtual meeting is meet.google.com/gbm-ecma-vyu
I have been anxiously waiting for this paper on European ceratopsians! Congratulations all!
www.nature.com/articles/s41... @paleontologizing.bsky.social @utahpaleo-ufop.bsky.social @jeremybroberts.bsky.social @tweetisaurus.bsky.social @richardjbutler.bsky.social @societyofvertpaleo.bsky.social
www.nature.com/articles/s41... @paleontologizing.bsky.social @utahpaleo-ufop.bsky.social @jeremybroberts.bsky.social @tweetisaurus.bsky.social @richardjbutler.bsky.social @societyofvertpaleo.bsky.social
A hidden diversity of ceratopsian dinosaurs in Late Cretaceous Europe - Nature
New results indicate that rhabdodontids and the previously described Ajkaceratops are actually distinctive European ceratopsians, a group better known from Asia and North America.
www.nature.com
January 7, 2026 at 8:20 PM
I have been anxiously waiting for this paper on European ceratopsians! Congratulations all!
www.nature.com/articles/s41... @paleontologizing.bsky.social @utahpaleo-ufop.bsky.social @jeremybroberts.bsky.social @tweetisaurus.bsky.social @richardjbutler.bsky.social @societyofvertpaleo.bsky.social
www.nature.com/articles/s41... @paleontologizing.bsky.social @utahpaleo-ufop.bsky.social @jeremybroberts.bsky.social @tweetisaurus.bsky.social @richardjbutler.bsky.social @societyofvertpaleo.bsky.social
For #FossilFriday Interesting talk by the Geologists Association this Friday January 9th at 12:00 noon MST: Reconstructing the Cretaceous Greenhouse by professor Andy Gale. Registration for virtual access to the meeting can be found through their website here. geologistsassociation.org.uk/lectures/
Lectures | Geologists' Association
geologistsassociation.org.uk
January 7, 2026 at 8:02 PM
For #FossilFriday Interesting talk by the Geologists Association this Friday January 9th at 12:00 noon MST: Reconstructing the Cretaceous Greenhouse by professor Andy Gale. Registration for virtual access to the meeting can be found through their website here. geologistsassociation.org.uk/lectures/
Reposted by PaleoJim
ESCONI January 2026 General Meeting - January 9th, 2026 at 8:00 PM – “Fossil Birds of Wyoming” #fossils #paleontology #birds #Wyoming
ESCONI January 2026 General Meeting – January 9th, 2026 at 8:00 PM – “Fossil Birds of Wyoming”
Jean-Pierre Cavigelli, of Casper College in Casper, WY, will present "Fossil Birds of Wyoming". Wyoming is well known for its fossils of all kinds. Dinosaurs are probably the most famous. They were first discovered here in the late 1800's and are still being uncovered and studied nowadays. Fossil fishes from the southwest corner of the state are mined by the thousands and sold in rock shops all over the world.
esconi.org
January 6, 2026 at 2:00 PM
ESCONI January 2026 General Meeting - January 9th, 2026 at 8:00 PM – “Fossil Birds of Wyoming” #fossils #paleontology #birds #Wyoming
Reposted by PaleoJim
Enchanting video (& soundtrack!) of a capybara swimming along an underwater sandy-gravelly bottom that also shows unusually long distances between its footfalls. If preserved in the fossil record, this trackway might be interpreted as "very fast running" instead of "leisurely swimming." 🧪🐾
I need a mood booster, let's talk about capybaras.
Here's a capy demonstrating one of MANY ways they can move through the water: running along the bottom.
They're 'semi-aquatic' mammals, just like hippos, seals & beavers. They LOVE water.
(📷: Fernando Maidana)
Here's a capy demonstrating one of MANY ways they can move through the water: running along the bottom.
They're 'semi-aquatic' mammals, just like hippos, seals & beavers. They LOVE water.
(📷: Fernando Maidana)
January 6, 2026 at 2:41 PM
Enchanting video (& soundtrack!) of a capybara swimming along an underwater sandy-gravelly bottom that also shows unusually long distances between its footfalls. If preserved in the fossil record, this trackway might be interpreted as "very fast running" instead of "leisurely swimming." 🧪🐾
Love to make WAVP, but lots of new dinosaurs to describe over the off-season.... @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @jeremybroberts.bsky.social
The Western Association of Vertebrate Paleontologists meetings are a fantastic venue for researchers across the spectrum, including students and early career researchers. And the Raymond Alf Museum is a great venue with an amazing team of dedicated paleontologists. Come give a talk! 🦖🧪
Hey paleontologists! The Alf Museum is hosting WAVP (Western Association of Vertebrate Paleontology) next month. (should have abstract submission details pretty quick). Details here: www.wavp.us
January 5, 2026 at 4:33 PM
Love to make WAVP, but lots of new dinosaurs to describe over the off-season.... @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @jeremybroberts.bsky.social
Reposted by PaleoJim
Exploring the Feasibility of a Regional Earthquake Early Warning System in Utah #BSSA⚒️
Utah’s existing seismic network is at the desired density along the Wasatch fault zone, and needs to be upgraded to be operational for earthquake early warning.
pubs.geoscienceworld.org/ssa/bssa/art...
Utah’s existing seismic network is at the desired density along the Wasatch fault zone, and needs to be upgraded to be operational for earthquake early warning.
pubs.geoscienceworld.org/ssa/bssa/art...
January 4, 2026 at 3:01 PM
Exploring the Feasibility of a Regional Earthquake Early Warning System in Utah #BSSA⚒️
Utah’s existing seismic network is at the desired density along the Wasatch fault zone, and needs to be upgraded to be operational for earthquake early warning.
pubs.geoscienceworld.org/ssa/bssa/art...
Utah’s existing seismic network is at the desired density along the Wasatch fault zone, and needs to be upgraded to be operational for earthquake early warning.
pubs.geoscienceworld.org/ssa/bssa/art...
Working on describing new basal Cretaceous polacanthid ankylosaurs, so for the 1st #FossilFriday of 2026 sharing drafts of pectoral girdle & forelimb figures. I am a big fan of direct comparisons. @utahpaleo-ufop.bsky.social @jlivelypaleo.bsky.social @paleontologizing.bsky.social
January 2, 2026 at 8:21 PM
Working on describing new basal Cretaceous polacanthid ankylosaurs, so for the 1st #FossilFriday of 2026 sharing drafts of pectoral girdle & forelimb figures. I am a big fan of direct comparisons. @utahpaleo-ufop.bsky.social @jlivelypaleo.bsky.social @paleontologizing.bsky.social
Reposted by PaleoJim
Some good news to end the year: the Paleontological Research Institution in Ithaca has raised enough this year to pay off its mortgage in full and keep the doors open!!!
PRI's Wonderful Life — Paleontological Research Institution
By Dr. Warren Allmon , Director of the Paleontological Research Institution December 30, 2025 The holidays are a time for “Christmas movies” in my house, and one that is always on our list is&nbs...
www.priweb.org
December 31, 2025 at 11:58 PM
Some good news to end the year: the Paleontological Research Institution in Ithaca has raised enough this year to pay off its mortgage in full and keep the doors open!!!
Reposted by PaleoJim
I’m also excited that my team’s paper describing Asmodochelys leviathan, a new species of giant Maastrichtian marine turtle from the Neylandville Marl Formation of Texas, is included in the volume: link.springer.com/article/10.1...
A novel marine turtle (Pan-Chelonioidea: Ctenochelyidae) from the Maastrichtian Neylandville Marl Formation of north central Texas, U.S.A - Swiss Journal of Palaeontology
The marine turtle family Ctenochelyidae was a Late Cretaceous North American radiation of Pan-Chelonioidea, broadly distributed along the coastlines of the Atlantic Coastal Plain and Mississippi Embay...
link.springer.com
December 30, 2025 at 7:09 PM
I’m also excited that my team’s paper describing Asmodochelys leviathan, a new species of giant Maastrichtian marine turtle from the Neylandville Marl Formation of Texas, is included in the volume: link.springer.com/article/10.1...
Nice interview with my boss, Utah's State Geologist. Darlene Batatian has been a big supporter of Utah Geological Survey's role in Utah paleontology. www.youtube.com/watch?v=0RpY... @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @societyofvertpaleo.bsky.social
From Remote Alaska Field Work To State Geologist: Meet Darlene Batatian
YouTube video by Shawn Willsey: Geology Explained
www.youtube.com
December 29, 2025 at 8:52 PM
Nice interview with my boss, Utah's State Geologist. Darlene Batatian has been a big supporter of Utah Geological Survey's role in Utah paleontology. www.youtube.com/watch?v=0RpY... @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @societyofvertpaleo.bsky.social
Ben Goode
Cretaceous Crusher Sharks w/ Shawn Hamm | Elasmocast Episode #16
youtu.be/jhrdVAkl-xg
@jeremybroberts.bsky.social @sharkscience.bsky.social @societyofvertpaleo.bsky.social
Cretaceous Crusher Sharks w/ Shawn Hamm | Elasmocast Episode #16
youtu.be/jhrdVAkl-xg
@jeremybroberts.bsky.social @sharkscience.bsky.social @societyofvertpaleo.bsky.social
Cretaceous Crusher Sharks w/ Shawn Hamm | Elasmocast Episode #16
YouTube video by Elasmocast
youtu.be
December 27, 2025 at 12:20 AM
Ben Goode
Cretaceous Crusher Sharks w/ Shawn Hamm | Elasmocast Episode #16
youtu.be/jhrdVAkl-xg
@jeremybroberts.bsky.social @sharkscience.bsky.social @societyofvertpaleo.bsky.social
Cretaceous Crusher Sharks w/ Shawn Hamm | Elasmocast Episode #16
youtu.be/jhrdVAkl-xg
@jeremybroberts.bsky.social @sharkscience.bsky.social @societyofvertpaleo.bsky.social
Curious is anyone has ever described the huge allosaur that I found near the top of the Morrison at Horsetooth Res. no. CO. Bakker called vert, Epantarias. Skull material at DMNS & verts at CU? Sooz found a nice bone scatter at Carter Res. to the south. All found in 1987. #FossilFriday
December 26, 2025 at 11:35 PM
Curious is anyone has ever described the huge allosaur that I found near the top of the Morrison at Horsetooth Res. no. CO. Bakker called vert, Epantarias. Skull material at DMNS & verts at CU? Sooz found a nice bone scatter at Carter Res. to the south. All found in 1987. #FossilFriday
National Parks Traveler noted the UGA pub. on NPS fossils in Utah we co-authored. @andrewtracks.bsky.social tritylodont bonebed discovery at Kayenta-Navajo Fm. Low Lake levels may permit an expedition to further document sites next year. #FossilFriday www.nationalparkstraveler.org/2025/12/visu...
December 26, 2025 at 8:33 PM
National Parks Traveler noted the UGA pub. on NPS fossils in Utah we co-authored. @andrewtracks.bsky.social tritylodont bonebed discovery at Kayenta-Navajo Fm. Low Lake levels may permit an expedition to further document sites next year. #FossilFriday www.nationalparkstraveler.org/2025/12/visu...
Reposted by PaleoJim
Happy holidays from the Paleo Society!🎉
This #BookReview features Sea Level: A History by Wilko Graf von Hardenburg🌊which tells the history of developing technology and #Oceanography ⚙️🌏Learn how we know what we know about oceans & start off ‘26 with this page turner!
#Paleontology #Literature #Ocean
This #BookReview features Sea Level: A History by Wilko Graf von Hardenburg🌊which tells the history of developing technology and #Oceanography ⚙️🌏Learn how we know what we know about oceans & start off ‘26 with this page turner!
#Paleontology #Literature #Ocean
December 24, 2025 at 5:40 PM
Happy holidays from the Paleo Society!🎉
This #BookReview features Sea Level: A History by Wilko Graf von Hardenburg🌊which tells the history of developing technology and #Oceanography ⚙️🌏Learn how we know what we know about oceans & start off ‘26 with this page turner!
#Paleontology #Literature #Ocean
This #BookReview features Sea Level: A History by Wilko Graf von Hardenburg🌊which tells the history of developing technology and #Oceanography ⚙️🌏Learn how we know what we know about oceans & start off ‘26 with this page turner!
#Paleontology #Literature #Ocean
Reposted by PaleoJim
#FossilFriday Wiped out from delivering presents, little Cambrian arthropod Sanctacaris (aka "Santa Claws") takes a very long (508 million year) rest. Specimen at @romtoronto.bsky.social
December 26, 2025 at 1:36 PM
#FossilFriday Wiped out from delivering presents, little Cambrian arthropod Sanctacaris (aka "Santa Claws") takes a very long (508 million year) rest. Specimen at @romtoronto.bsky.social
So are aetosaurs and ankylosaurs convergent on giant millipeds ?? @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social
How can we not help but love the largest known land invertebrate? Also? Think of the tracks this absolute unit would've have left. (ht to @susieoftraken.bsky.social for reposting @caseystegman.com for the original post.) #FossilFriday #Invertefest
Giant ass millipede dailygalaxy.com/2025/12/gian...
December 26, 2025 at 3:37 PM
So are aetosaurs and ankylosaurs convergent on giant millipeds ?? @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social
Fun podcast on a extraordinarily spiny ankylosaurid. open.spotify.com/episode/6t9V... @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @geolsoc.bsky.social @jlivelypaleo.bsky.social @dinodadreviews.bsky.social @stupond.bsky.social @societyofvertpaleo.bsky.social
The Spicomellus Special
open.spotify.com
December 26, 2025 at 3:28 PM
Fun podcast on a extraordinarily spiny ankylosaurid. open.spotify.com/episode/6t9V... @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @geolsoc.bsky.social @jlivelypaleo.bsky.social @dinodadreviews.bsky.social @stupond.bsky.social @societyofvertpaleo.bsky.social
Danny "just" posted some field interviews from a couple years ago. So if you are not interested in watching football give them a view. www.youtube.com/watch?v=mIU0...
@utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @societyofvertpaleo.bsky.social @jgn-paleo.bsky.social
@utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @societyofvertpaleo.bsky.social @jgn-paleo.bsky.social
December 26, 2025 at 1:02 AM
Danny "just" posted some field interviews from a couple years ago. So if you are not interested in watching football give them a view. www.youtube.com/watch?v=mIU0...
@utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @societyofvertpaleo.bsky.social @jgn-paleo.bsky.social
@utahpaleo-ufop.bsky.social @paleontologizing.bsky.social @societyofvertpaleo.bsky.social @jgn-paleo.bsky.social
Reposted by PaleoJim
#fossilfriday ⚒️🦑🇦🇶
New paper alert! 🚨 🐌
We studied historic Antarctic fossils from the Zinsmeister Collection to assess whether the K-Pg extinction, as recorded on Seymour Island, was sudden or gradual. We found that benthic life thrived in the 4 million years before the K-Pg.
doi.org/10.1016/j.pa...
We studied historic Antarctic fossils from the Zinsmeister Collection to assess whether the K-Pg extinction, as recorded on Seymour Island, was sudden or gradual. We found that benthic life thrived in the 4 million years before the K-Pg.
doi.org/10.1016/j.pa...
December 19, 2025 at 7:32 PM
#fossilfriday ⚒️🦑🇦🇶
A historic picture of some awesome talent; Pablo Picasso, Andy Warhol. Jean-Míchel Basquiat, Salvador Dalí, Frida Kahlo. Love to learn more about this historic picture.
December 24, 2025 at 5:02 PM
A historic picture of some awesome talent; Pablo Picasso, Andy Warhol. Jean-Míchel Basquiat, Salvador Dalí, Frida Kahlo. Love to learn more about this historic picture.
This will be interesting.
It would be at &PM GMT; 12 noon, Mountain Time
Let's look at super green housing in our past rather than in our future. The view from across the pond. @utahpaleo-ufop.bsky.social
sarah@geologistsassociation.org.uk to register for Zoom link. @paleontologizing.bsky.social
It would be at &PM GMT; 12 noon, Mountain Time
Let's look at super green housing in our past rather than in our future. The view from across the pond. @utahpaleo-ufop.bsky.social
sarah@geologistsassociation.org.uk to register for Zoom link. @paleontologizing.bsky.social
December 23, 2025 at 9:31 PM
This will be interesting.
It would be at &PM GMT; 12 noon, Mountain Time
Let's look at super green housing in our past rather than in our future. The view from across the pond. @utahpaleo-ufop.bsky.social
sarah@geologistsassociation.org.uk to register for Zoom link. @paleontologizing.bsky.social
It would be at &PM GMT; 12 noon, Mountain Time
Let's look at super green housing in our past rather than in our future. The view from across the pond. @utahpaleo-ufop.bsky.social
sarah@geologistsassociation.org.uk to register for Zoom link. @paleontologizing.bsky.social