Tosha Hollmann
@toshahollmann.bsky.social
Paleoartist and fossil prep technician specializing in marine reptiles. Focused on studying ichthyosaur phylogeny + taxonomy. He/Him, views my own.
Reposted by Tosha Hollmann
It’s finally out!
Our work addressing the origins of reptiles is published in PCJ! peercommunityjournal.org/articles/10....
We use novel info gleaned from the scan data of dozens of stem reptiles to substantially revise our understanding of early reptile evolution #paleontology #herpetology
Our work addressing the origins of reptiles is published in PCJ! peercommunityjournal.org/articles/10....
We use novel info gleaned from the scan data of dozens of stem reptiles to substantially revise our understanding of early reptile evolution #paleontology #herpetology
August 28, 2025 at 12:22 PM
It’s finally out!
Our work addressing the origins of reptiles is published in PCJ! peercommunityjournal.org/articles/10....
We use novel info gleaned from the scan data of dozens of stem reptiles to substantially revise our understanding of early reptile evolution #paleontology #herpetology
Our work addressing the origins of reptiles is published in PCJ! peercommunityjournal.org/articles/10....
We use novel info gleaned from the scan data of dozens of stem reptiles to substantially revise our understanding of early reptile evolution #paleontology #herpetology
Reposted by Tosha Hollmann
A great float of Attenborosaurus swiftly navigate their pelagic environment in their hunt for fish.
Attenborosaurus (named after Sir David Attenborough) is an extinct marine reptile that existed during the early Jurassic, it was a primitive pliosaurid, closer related to short-necked plesiosaurs.
Attenborosaurus (named after Sir David Attenborough) is an extinct marine reptile that existed during the early Jurassic, it was a primitive pliosaurid, closer related to short-necked plesiosaurs.
May 26, 2025 at 3:41 PM
A great float of Attenborosaurus swiftly navigate their pelagic environment in their hunt for fish.
Attenborosaurus (named after Sir David Attenborough) is an extinct marine reptile that existed during the early Jurassic, it was a primitive pliosaurid, closer related to short-necked plesiosaurs.
Attenborosaurus (named after Sir David Attenborough) is an extinct marine reptile that existed during the early Jurassic, it was a primitive pliosaurid, closer related to short-necked plesiosaurs.
Sketch - Hatzegopteryx thambema
March 20, 2025 at 4:25 PM
Sketch - Hatzegopteryx thambema
Reposted by Tosha Hollmann
Sclerocormus, an extremely strange ichthyosauriform, hunting ammonites
February 6, 2024 at 4:10 PM
Sclerocormus, an extremely strange ichthyosauriform, hunting ammonites
Sketch of Suchodus, a large and nasty metriorhynchid from the Oxford Clay
March 9, 2025 at 6:25 PM
Sketch of Suchodus, a large and nasty metriorhynchid from the Oxford Clay
These look fantastic!! Just a small note, but Qianichthyosaurus and the rest of toretocnemidae are not members of Parvipelvia, rather placing just outside it :)
March 9, 2025 at 6:41 AM
These look fantastic!! Just a small note, but Qianichthyosaurus and the rest of toretocnemidae are not members of Parvipelvia, rather placing just outside it :)
Reposted by Tosha Hollmann
It's #Tylosaurus Tuesday my dudes!
Every now and then we find some baby mosasaurs in Kansas that don't quite make it very long in life. A lucky few of them don't end up as shark puke either. Here are 2 premaxilla snoots, the left one from Clidastes and the right from Tylosaurus with a little prow 🧪
Every now and then we find some baby mosasaurs in Kansas that don't quite make it very long in life. A lucky few of them don't end up as shark puke either. Here are 2 premaxilla snoots, the left one from Clidastes and the right from Tylosaurus with a little prow 🧪
March 4, 2025 at 6:58 PM
It's #Tylosaurus Tuesday my dudes!
Every now and then we find some baby mosasaurs in Kansas that don't quite make it very long in life. A lucky few of them don't end up as shark puke either. Here are 2 premaxilla snoots, the left one from Clidastes and the right from Tylosaurus with a little prow 🧪
Every now and then we find some baby mosasaurs in Kansas that don't quite make it very long in life. A lucky few of them don't end up as shark puke either. Here are 2 premaxilla snoots, the left one from Clidastes and the right from Tylosaurus with a little prow 🧪
Reposted by Tosha Hollmann
First new painting in a while — Leptonectes tenuirostris (foreground) and Leptonectes solei (background) hunt cephalopods as dusk
February 22, 2025 at 5:51 PM
First new painting in a while — Leptonectes tenuirostris (foreground) and Leptonectes solei (background) hunt cephalopods as dusk
First new painting in a while — Leptonectes tenuirostris (foreground) and Leptonectes solei (background) hunt cephalopods as dusk
February 22, 2025 at 5:51 PM
First new painting in a while — Leptonectes tenuirostris (foreground) and Leptonectes solei (background) hunt cephalopods as dusk
Scale-like (or fibrous) structures are also documented on the leading edge of some ichthyosaur fins — not commented on much in literature but potentially an interesting avenue for future research
February 6, 2025 at 5:53 PM
Scale-like (or fibrous) structures are also documented on the leading edge of some ichthyosaur fins — not commented on much in literature but potentially an interesting avenue for future research
Scales being found only on the flippers here immediately brings to mind cetaceans that roughen and thicken the leading edge of their fins & flippers for hydrodynamic purposes.
February 6, 2025 at 5:53 PM
Scales being found only on the flippers here immediately brings to mind cetaceans that roughen and thicken the leading edge of their fins & flippers for hydrodynamic purposes.
Reposted by Tosha Hollmann
Blue whales make among the loudest calls of anything in the ocean... but killer whales cannot hear them at all because their calls are so deep. In my new paper I suggest this is an adaptation to reduce killer whale attacks.
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
February 1, 2025 at 6:11 PM
Blue whales make among the loudest calls of anything in the ocean... but killer whales cannot hear them at all because their calls are so deep. In my new paper I suggest this is an adaptation to reduce killer whale attacks.
onlinelibrary.wiley.com/doi/10.1111/...
onlinelibrary.wiley.com/doi/10.1111/...
Dearc sgiathanach, sketch referencing the newly-published osteology
January 24, 2025 at 4:22 PM
Dearc sgiathanach, sketch referencing the newly-published osteology
Reposted by Tosha Hollmann
Forest Interior with Jinzhousaurus. Miguel, 1924.
My last piece of the year, inspired by Ludvig Munthe's 1870 painting "Forest Interior".
#paleoart #hadrosaur #sciart
My last piece of the year, inspired by Ludvig Munthe's 1870 painting "Forest Interior".
#paleoart #hadrosaur #sciart
December 26, 2024 at 9:25 PM
Forest Interior with Jinzhousaurus. Miguel, 1924.
My last piece of the year, inspired by Ludvig Munthe's 1870 painting "Forest Interior".
#paleoart #hadrosaur #sciart
My last piece of the year, inspired by Ludvig Munthe's 1870 painting "Forest Interior".
#paleoart #hadrosaur #sciart
The neural arches, which are on the dorsal surface of the vert, do the most to restrict motion of the vertebral column. So there’s just more in the way when the back flexes up rather than down
November 18, 2024 at 7:15 PM
The neural arches, which are on the dorsal surface of the vert, do the most to restrict motion of the vertebral column. So there’s just more in the way when the back flexes up rather than down
Sketch of porpoise upstroke and downstroke for… something (hopefully)
November 18, 2024 at 6:39 PM
Sketch of porpoise upstroke and downstroke for… something (hopefully)
Reposted by Tosha Hollmann
Who owns the 'facts' on the #LochNessMonster and are believers right to be super-aggressive towards the sceptics? New #TetZoo article now has a good number of comments .... tetzoo.com/blog/2024/11... #LochNess #Nessie
Nessie Point and Counterpoint; Who Owns the ‘Facts’ on the Loch Ness Monster? — Tetrapod Zoology
Regular readers of this blog might be aware of my book Hunting Monsters: Cryptozoology and the Reality Behind the Myths , initially published as an ebook in 2016 ( Naish 2016 ) and appearing in har...
tetzoo.com
November 7, 2024 at 7:02 PM
Who owns the 'facts' on the #LochNessMonster and are believers right to be super-aggressive towards the sceptics? New #TetZoo article now has a good number of comments .... tetzoo.com/blog/2024/11... #LochNess #Nessie
No— Platypterygius is a Cretaceous taxon, and this is Jurassic. You can also tell the fossil doesn’t belong to a derived platypterygiid because of the rounded phalanges, and that it isn’t an ophthalmosaur because of the notching on the anterior digit (something ophthalmosaurs lose)
November 4, 2024 at 4:21 PM
No— Platypterygius is a Cretaceous taxon, and this is Jurassic. You can also tell the fossil doesn’t belong to a derived platypterygiid because of the rounded phalanges, and that it isn’t an ophthalmosaur because of the notching on the anterior digit (something ophthalmosaurs lose)
Reposted by Tosha Hollmann
Come by B66 in the poster session this afternoon for Best Practices for Fossil Vertebrate Skeletal Diagrams by @skeletaldrawing.bsky.social and myself! #2024SVP
October 30, 2024 at 6:28 PM
Come by B66 in the poster session this afternoon for Best Practices for Fossil Vertebrate Skeletal Diagrams by @skeletaldrawing.bsky.social and myself! #2024SVP
Reposted by Tosha Hollmann
Happy #FossilFriday everyone! Excited to share that very soon, I will be able to share a piece of research that I've been hard at work for years. Not sure if it will release today, but figured I would share a little teaser here...
October 25, 2024 at 4:00 PM
Happy #FossilFriday everyone! Excited to share that very soon, I will be able to share a piece of research that I've been hard at work for years. Not sure if it will release today, but figured I would share a little teaser here...
Hello new Bluesky followers- enjoy some Mosasaurus reconstructions.
I tried to incorporate the clavicles and interclavicles into these reconstructions, as well as a shallower chest due to lizardy swept-back ribs.
I tried to incorporate the clavicles and interclavicles into these reconstructions, as well as a shallower chest due to lizardy swept-back ribs.
October 17, 2024 at 9:45 PM
Hello new Bluesky followers- enjoy some Mosasaurus reconstructions.
I tried to incorporate the clavicles and interclavicles into these reconstructions, as well as a shallower chest due to lizardy swept-back ribs.
I tried to incorporate the clavicles and interclavicles into these reconstructions, as well as a shallower chest due to lizardy swept-back ribs.
Reposted by Tosha Hollmann
Trying to think of a skeletal to share that I haven't really discussed elsewhere, so here's my take on the skeleton of everyone's favorite giant flying reptile, Quetzalcoatlus. The 2021 monograph by Padian, et al. made this worth tackling.
October 17, 2024 at 6:23 PM
Trying to think of a skeletal to share that I haven't really discussed elsewhere, so here's my take on the skeleton of everyone's favorite giant flying reptile, Quetzalcoatlus. The 2021 monograph by Padian, et al. made this worth tackling.
Reposted by Tosha Hollmann
Hello lovely folks,
I will try to be more active here now considering how many bad decisions are made in the other place.
Have some recent images from the streams.
I will try to be more active here now considering how many bad decisions are made in the other place.
Have some recent images from the streams.
October 17, 2024 at 1:51 PM
Hello lovely folks,
I will try to be more active here now considering how many bad decisions are made in the other place.
Have some recent images from the streams.
I will try to be more active here now considering how many bad decisions are made in the other place.
Have some recent images from the streams.