Let me introduce you to Ahvaytum bahndooiveche, a new #dinosaur described yesterday that represents the oldest Laurasian dinosaur known so far!
I was lucky enough to be commissioned to create the reconstruction of this taxon. Congratulations to Dr. David Lovelace and colleagues!
#paleoart #sciart
I was lucky enough to be commissioned to create the reconstruction of this taxon. Congratulations to Dr. David Lovelace and colleagues!
#paleoart #sciart
January 8, 2025 at 4:58 PM
Checkout this article I found at PLOS: dx.plos.org/10.1371/jour...
A new metoposaurid (Temnospondyli) bonebed from the lower Popo Agie Formation (Carnian, Triassic) and an assessment of skeletal sorting
Metoposaurid-dominated bonebeds are relatively commonplace in Upper Triassic continental deposits with at least ten monodominant, densely-packed bonebeds globally. The biostratinomy of several classic...
dx.plos.org
April 2, 2025 at 6:26 PM
Checkout this article I found at PLOS: dx.plos.org/10.1371/jour...
#temnovember2024 day 23: Dutuitosaurus
And now for a big #metoposaurid, #Dutuitosaurus, a large acuatic predator from the upper Triassic of north africa, very similar to de european #Metoposaurus
#paleoart #sciart #amphibian #temnospondyl #temnovember #triassic
And now for a big #metoposaurid, #Dutuitosaurus, a large acuatic predator from the upper Triassic of north africa, very similar to de european #Metoposaurus
#paleoart #sciart #amphibian #temnospondyl #temnovember #triassic
November 24, 2024 at 12:44 PM
#temnovember2024 day 23: Dutuitosaurus
And now for a big #metoposaurid, #Dutuitosaurus, a large acuatic predator from the upper Triassic of north africa, very similar to de european #Metoposaurus
#paleoart #sciart #amphibian #temnospondyl #temnovember #triassic
And now for a big #metoposaurid, #Dutuitosaurus, a large acuatic predator from the upper Triassic of north africa, very similar to de european #Metoposaurus
#paleoart #sciart #amphibian #temnospondyl #temnovember #triassic
A new Triassic metoposaur from the Popo Age Fm, Wyoming
dx.plos.org/10.1371/jour...
dx.plos.org/10.1371/jour...
A new metoposaurid (Temnospondyli) bonebed from the lower Popo Agie Formation (Carnian, Triassic) and an assessment of skeletal sorting
Metoposaurid-dominated bonebeds are relatively commonplace in Upper Triassic continental deposits with at least ten monodominant, densely-packed bonebeds globally. The biostratinomy of several classic...
dx.plos.org
July 16, 2025 at 11:40 AM
A new Triassic metoposaur from the Popo Age Fm, Wyoming
dx.plos.org/10.1371/jour...
dx.plos.org/10.1371/jour...
Recent redescriptions of several metoposaurid taxa including Anaschisma browni (left) and Buettnererpeton bakeri (right) and character matrices attempting to discern metoposaurids relationships made this work reasonably straightforward.
September 23, 2026 at 9:07 PM
Recent redescriptions of several metoposaurid taxa including Anaschisma browni (left) and Buettnererpeton bakeri (right) and character matrices attempting to discern metoposaurids relationships made this work reasonably straightforward.
This one has been a long time coming! I'm happy to share that another chapter of my PhD has been published!
In this one, I'm shaking up the taxonomy of North American metoposaurids. This work was largely done in museum collections, and more on that below.
peerj.com/articles/217...
In this one, I'm shaking up the taxonomy of North American metoposaurids. This work was largely done in museum collections, and more on that below.
peerj.com/articles/217...
September 23, 2026 at 9:07 PM
This one has been a long time coming! I'm happy to share that another chapter of my PhD has been published!
In this one, I'm shaking up the taxonomy of North American metoposaurids. This work was largely done in museum collections, and more on that below.
peerj.com/articles/217...
In this one, I'm shaking up the taxonomy of North American metoposaurids. This work was largely done in museum collections, and more on that below.
peerj.com/articles/217...
For #MetoposauridMonday, the holotype of "Buettneria perfecta" at @ummnh.bsky.social
#makemetoposauridsgreatforonce #temnospondyl
#makemetoposauridsgreatforonce #temnospondyl
December 9, 2024 at 3:28 PM
For #MetoposauridMonday, the holotype of "Buettneria perfecta" at @ummnh.bsky.social
#makemetoposauridsgreatforonce #temnospondyl
#makemetoposauridsgreatforonce #temnospondyl
(Here is a #metoposaurid from the LACM)
January 21, 2025 at 3:53 PM
(Here is a #metoposaurid from the LACM)
With my guilt now acknowledged, let's get on to what I consider the most interesting part of this work: Apachesaurus gregorii.
September 23, 2026 at 9:07 PM
With my guilt now acknowledged, let's get on to what I consider the most interesting part of this work: Apachesaurus gregorii.
as mentioned previously, endothiodon's beak bears a resemblance to those of herbivorous archosauromorphs called rhynchosaurs, the best-known of which is hyperodapedon
(art by andrey atuchin)
(art by andrey atuchin)
March 14, 2025 at 3:58 PM
as mentioned previously, endothiodon's beak bears a resemblance to those of herbivorous archosauromorphs called rhynchosaurs, the best-known of which is hyperodapedon
(art by andrey atuchin)
(art by andrey atuchin)
Yesterday @koskinonodon.bsky.social publicly besmirched me in a talk saying that I don’t collect isolated metoposaurid intercentra.
How dare you, Bryan, this was from last week.
How dare you, Bryan, this was from last week.
March 7, 2025 at 7:37 PM
Yesterday @koskinonodon.bsky.social publicly besmirched me in a talk saying that I don’t collect isolated metoposaurid intercentra.
How dare you, Bryan, this was from last week.
How dare you, Bryan, this was from last week.
A new metoposaurid (Temnospondyli) bonebed from the lower Popo Agie Formation (Carnian, Triassic) and an assessment of skeletal sorting in temnospondyls https://www.biorxiv.org/content/10.1101/2024.12.28.630624v1
December 29, 2024 at 7:00 AM
A new metoposaurid (Temnospondyli) bonebed from the lower Popo Agie Formation (Carnian, Triassic) and an assessment of skeletal sorting in temnospondyls https://www.biorxiv.org/content/10.1101/2024.12.28.630624v1
The results were a little surprising to me since I was able to find evidence that Anaschisma browni may have been a bit of a wastebasket and ended up restricting that species to just specimens from the Popo Agie Fm of WY. (And a rare lateral view of a metoposaurid for your viewing pleasure)
September 23, 2026 at 9:07 PM
The results were a little surprising to me since I was able to find evidence that Anaschisma browni may have been a bit of a wastebasket and ended up restricting that species to just specimens from the Popo Agie Fm of WY. (And a rare lateral view of a metoposaurid for your viewing pleasure)
So where are the adults? Well, they may have been sitting in front of us all along. I tentatively referred UCMP 27051 to Apachesaurus gregorii based on the abrupt curvature of the temporal LLS toward the squamosal (though not clearly passing onto it) and a narrow cultiform process.
September 23, 2026 at 9:07 PM
So where are the adults? Well, they may have been sitting in front of us all along. I tentatively referred UCMP 27051 to Apachesaurus gregorii based on the abrupt curvature of the temporal LLS toward the squamosal (though not clearly passing onto it) and a narrow cultiform process.
But importantly, the discontinuous cranial LLS present in the type locality specimens (and another small referred specimen 📸 here) of Apachesaurus gregorii may be an indicator of juvenile ontogenetic status.
September 23, 2026 at 9:07 PM
But importantly, the discontinuous cranial LLS present in the type locality specimens (and another small referred specimen 📸 here) of Apachesaurus gregorii may be an indicator of juvenile ontogenetic status.
Alright, I'm going to try and keep the rest of this short. If this interests you, I'd recommend reading the article, but then again, I'm a little biased. So what about the results of the phylogenetic analysis? Well, it's consistent with previous analyses of metoposaurids which is good(?)
September 23, 2026 at 9:07 PM
Alright, I'm going to try and keep the rest of this short. If this interests you, I'd recommend reading the article, but then again, I'm a little biased. So what about the results of the phylogenetic analysis? Well, it's consistent with previous analyses of metoposaurids which is good(?)
Link that works: journals.plos.org/plosone/arti...
A new metoposaurid (Temnospondyli) bonebed from the lower Popo Agie Formation (Carnian, Triassic) and an assessment of skeletal sorting
Metoposaurid-dominated bonebeds are relatively commonplace in Upper Triassic continental deposits with at least ten monodominant, densely-packed bonebeds globally. The biostratinomy of several classic...
journals.plos.org
April 2, 2025 at 6:46 PM
Link that works: journals.plos.org/plosone/arti...
I was fully on board with the idea that Apachesaurus may actually represent a juvenile of what was at the time called Anaschisma, and to my surprise, I found solid evidence for its validity including a unique configuration of the cranial lateral line sulci, see UCMP 63846 from the type locality.
September 23, 2026 at 9:07 PM
I was fully on board with the idea that Apachesaurus may actually represent a juvenile of what was at the time called Anaschisma, and to my surprise, I found solid evidence for its validity including a unique configuration of the cranial lateral line sulci, see UCMP 63846 from the type locality.
Hey @stevebrusatte.bsky.social, how come the reconstruction in your Metoposaurus paper doesn't look like this one? Inquiring minds want to know
www.amazon.com/Ancient-Amph...
www.amazon.com/Ancient-Amph...
January 2, 2025 at 6:57 PM
Hey @stevebrusatte.bsky.social, how come the reconstruction in your Metoposaurus paper doesn't look like this one? Inquiring minds want to know
www.amazon.com/Ancient-Amph...
www.amazon.com/Ancient-Amph...
A nice figure of another junior synonym of Anaschisma browni, "Koskinonodon princeps" from the Popo Agie Fm of Wyoming for #FossilFriday. For some reason, a chunk that could be reattached on the margin of the left orbit was left out and substituted with some filler
@akufner.bsky.social & Gee, 2021
@akufner.bsky.social & Gee, 2021
December 13, 2024 at 3:17 PM
A nice figure of another junior synonym of Anaschisma browni, "Koskinonodon princeps" from the Popo Agie Fm of Wyoming for #FossilFriday. For some reason, a chunk that could be reattached on the margin of the left orbit was left out and substituted with some filler
@akufner.bsky.social & Gee, 2021
@akufner.bsky.social & Gee, 2021
These results are more in line with some older schools of thought by authors like Colbert and Imbrie (1956) who suggested Anaschisma browni from WY is distinct from other metoposaurids in North America based on their "biometric" analyses (what we'd now call linear or traditional morphometrics).
September 23, 2026 at 9:07 PM
These results are more in line with some older schools of thought by authors like Colbert and Imbrie (1956) who suggested Anaschisma browni from WY is distinct from other metoposaurids in North America based on their "biometric" analyses (what we'd now call linear or traditional morphometrics).
Some preprints: @akufner.bsky.social et al. (CC: @calamanderso.bsky.social @paleobadger.bsky.social) provided a taphonomic analysis of a monotaxic metoposaurid bonebed from Wyoming, the 1st documentation of Buettnererpeton bakeri in the Popo Agie Fm. [preprint, not accepted] doi.org/10.1101/2024...
January 3, 2025 at 3:24 PM
Some preprints: @akufner.bsky.social et al. (CC: @calamanderso.bsky.social @paleobadger.bsky.social) provided a taphonomic analysis of a monotaxic metoposaurid bonebed from Wyoming, the 1st documentation of Buettnererpeton bakeri in the Popo Agie Fm. [preprint, not accepted] doi.org/10.1101/2024...
gotta keep him away from the nefarious metoposaurid
March 14, 2025 at 9:27 PM
gotta keep him away from the nefarious metoposaurid
@stereospondyl.bsky.social et al. described fraggy material from the Middle-Late Triassic Grabfeld Fm of Germany, identifying the oldest known #metoposaurid remains, proposing biogeographic scenarios for the clade, & reviving the hypothesis of osmotic tolerance. doi.org/10.3897/fr.2...
January 3, 2025 at 3:24 PM
@stereospondyl.bsky.social et al. described fraggy material from the Middle-Late Triassic Grabfeld Fm of Germany, identifying the oldest known #metoposaurid remains, proposing biogeographic scenarios for the clade, & reviving the hypothesis of osmotic tolerance. doi.org/10.3897/fr.2...