Armin Reindl
@arminreindl.bsky.social
Artist, crocodile enthusiast, wikipedia editor
tags: #SciArt
tags: #SciArt
Reposted by Armin Reindl
A group of Dorygnathus use a Seirocrinus raft as a hunting ground for fish, when a big Eurhinosaurus suddenly breaches the surface.
This scene takes place in Germany during the Early Jurassic, around 180 million years ago.
Digital painting by Peter Nickolaus, 2025.
This scene takes place in Germany during the Early Jurassic, around 180 million years ago.
Digital painting by Peter Nickolaus, 2025.
November 21, 2025 at 8:08 PM
A group of Dorygnathus use a Seirocrinus raft as a hunting ground for fish, when a big Eurhinosaurus suddenly breaches the surface.
This scene takes place in Germany during the Early Jurassic, around 180 million years ago.
Digital painting by Peter Nickolaus, 2025.
This scene takes place in Germany during the Early Jurassic, around 180 million years ago.
Digital painting by Peter Nickolaus, 2025.
Rest in Peace Philippe Taquet.
Many people will known him from his work with dinosaurs, for me tho his most iconic taxon is Sarcosuchus.
Image via the MNHM
Many people will known him from his work with dinosaurs, for me tho his most iconic taxon is Sarcosuchus.
Image via the MNHM
November 17, 2025 at 9:25 PM
Rest in Peace Philippe Taquet.
Many people will known him from his work with dinosaurs, for me tho his most iconic taxon is Sarcosuchus.
Image via the MNHM
Many people will known him from his work with dinosaurs, for me tho his most iconic taxon is Sarcosuchus.
Image via the MNHM
It may not be Dezember yet but the Christmas season celebrations in Austria have started
November 15, 2025 at 8:10 PM
It may not be Dezember yet but the Christmas season celebrations in Austria have started
So a week ago someone on discord put the Prehistoric Planet Ice Age trailer to the main theme of WWB
Which inspired me to do a little experiment
Which inspired me to do a little experiment
November 14, 2025 at 9:10 PM
So a week ago someone on discord put the Prehistoric Planet Ice Age trailer to the main theme of WWB
Which inspired me to do a little experiment
Which inspired me to do a little experiment
New paper describing the eggshells likely belonging to the early mekosuchine Kambara, possibly indicating a different incubation method relative to modern crocodiles
doi.org/10.1080/0272...
doi.org/10.1080/0272...
Australia’s oldest crocodylian eggshell: insights into the reproductive paleoecology of mekosuchines
Alongside large madtsoiid snakes, the largest known lizards, thylacoleonid marsupials and a range of other terrestrial carnivores, the now extinct mekosuchine crocodylians were significant predator...
doi.org
November 11, 2025 at 8:49 PM
New paper describing the eggshells likely belonging to the early mekosuchine Kambara, possibly indicating a different incubation method relative to modern crocodiles
doi.org/10.1080/0272...
doi.org/10.1080/0272...
Lots of stuff going on so I'll keep #Croctober Day 30 a simple one
Here's a photo I took myself of the 4 meter Tomistoma male that was kept at the Vienna Aquarium until not too long ago
Here's a photo I took myself of the 4 meter Tomistoma male that was kept at the Vienna Aquarium until not too long ago
October 30, 2025 at 10:22 PM
Lots of stuff going on so I'll keep #Croctober Day 30 a simple one
Here's a photo I took myself of the 4 meter Tomistoma male that was kept at the Vienna Aquarium until not too long ago
Here's a photo I took myself of the 4 meter Tomistoma male that was kept at the Vienna Aquarium until not too long ago
Day 29 of #Croctober has given us another newcommer: Olkasuchus walasto, a new aetosaur from the Argentinian Los Colorados Formation
doi.org/10.1080/0891...
doi.org/10.1080/0891...
October 29, 2025 at 9:37 PM
Day 29 of #Croctober has given us another newcommer: Olkasuchus walasto, a new aetosaur from the Argentinian Los Colorados Formation
doi.org/10.1080/0891...
doi.org/10.1080/0891...
Day 28 of #Croctober, we're racing towards the finish line
This is one of my favourite images of Dakosaurus for two reasons
Reason 1: it nicely shows just how enormous this animal got
Reason 2: it also shows how stupidly tiny its arms were
Photo by Sven Sachs ft. Joschua Knüppe
This is one of my favourite images of Dakosaurus for two reasons
Reason 1: it nicely shows just how enormous this animal got
Reason 2: it also shows how stupidly tiny its arms were
Photo by Sven Sachs ft. Joschua Knüppe
October 28, 2025 at 9:42 PM
Day 28 of #Croctober, we're racing towards the finish line
This is one of my favourite images of Dakosaurus for two reasons
Reason 1: it nicely shows just how enormous this animal got
Reason 2: it also shows how stupidly tiny its arms were
Photo by Sven Sachs ft. Joschua Knüppe
This is one of my favourite images of Dakosaurus for two reasons
Reason 1: it nicely shows just how enormous this animal got
Reason 2: it also shows how stupidly tiny its arms were
Photo by Sven Sachs ft. Joschua Knüppe
DAY 27 OF #Croctober IS FRESH OFF THE PRESS
Meet Wadisuchus, published literally just this morning by Sara Saber and colleagues, a new decently sized (3-4 meter roughtly) dyrosaurid from Campanian Egypt, the oldest of its family.
Art by Nathan Dehaut
Meet Wadisuchus, published literally just this morning by Sara Saber and colleagues, a new decently sized (3-4 meter roughtly) dyrosaurid from Campanian Egypt, the oldest of its family.
Art by Nathan Dehaut
October 27, 2025 at 10:18 PM
DAY 27 OF #Croctober IS FRESH OFF THE PRESS
Meet Wadisuchus, published literally just this morning by Sara Saber and colleagues, a new decently sized (3-4 meter roughtly) dyrosaurid from Campanian Egypt, the oldest of its family.
Art by Nathan Dehaut
Meet Wadisuchus, published literally just this morning by Sara Saber and colleagues, a new decently sized (3-4 meter roughtly) dyrosaurid from Campanian Egypt, the oldest of its family.
Art by Nathan Dehaut
Lets keep this going on Day 26 of #Croctober
Simosuchus was not the only notosuchian with complex teeth. Look no further than Pakasuchus, which straight up just mirrors mammalian dentition down to the grinding molars.
Illustrations by Smokeybjb and Zina Deretsky
Simosuchus was not the only notosuchian with complex teeth. Look no further than Pakasuchus, which straight up just mirrors mammalian dentition down to the grinding molars.
Illustrations by Smokeybjb and Zina Deretsky
October 26, 2025 at 8:19 PM
Lets keep this going on Day 26 of #Croctober
Simosuchus was not the only notosuchian with complex teeth. Look no further than Pakasuchus, which straight up just mirrors mammalian dentition down to the grinding molars.
Illustrations by Smokeybjb and Zina Deretsky
Simosuchus was not the only notosuchian with complex teeth. Look no further than Pakasuchus, which straight up just mirrors mammalian dentition down to the grinding molars.
Illustrations by Smokeybjb and Zina Deretsky
#Croctober Day 25
Everyone loves Simosuchus. But did you ever take a closer look at its teeth? Well if you did then you'd see that they are quite complex, fitting its herbivorous diet.
They also look a bit like those of some modern iguanas (pic on the right)
Everyone loves Simosuchus. But did you ever take a closer look at its teeth? Well if you did then you'd see that they are quite complex, fitting its herbivorous diet.
They also look a bit like those of some modern iguanas (pic on the right)
October 25, 2025 at 7:01 PM
#Croctober Day 25
Everyone loves Simosuchus. But did you ever take a closer look at its teeth? Well if you did then you'd see that they are quite complex, fitting its herbivorous diet.
They also look a bit like those of some modern iguanas (pic on the right)
Everyone loves Simosuchus. But did you ever take a closer look at its teeth? Well if you did then you'd see that they are quite complex, fitting its herbivorous diet.
They also look a bit like those of some modern iguanas (pic on the right)
Love how for me its the opposite reaction.
Paleoartist John Sibbick did art for Warhammer 40K?
Paleoartist John Sibbick did art for Warhammer 40K?
Watching some videos on old paleoart and a familiar name showed up: John Sibbick.
I didn't realise that the guy I knew best from illustrating the cover of Rogue Trader was also a massively influential artist of prehistoric animals. That is a fact that makes me smile.
I didn't realise that the guy I knew best from illustrating the cover of Rogue Trader was also a massively influential artist of prehistoric animals. That is a fact that makes me smile.
October 25, 2025 at 6:42 PM
Love how for me its the opposite reaction.
Paleoartist John Sibbick did art for Warhammer 40K?
Paleoartist John Sibbick did art for Warhammer 40K?
Reposted by Armin Reindl
Sarcosuchus imperator, aka “Supercroc” as seen at the University of Chicago Fossil Lab. both a full reconstruction and one still in a plaster field jacket. #Croctober #fossilfriday 🐊
October 24, 2025 at 3:52 PM
Sarcosuchus imperator, aka “Supercroc” as seen at the University of Chicago Fossil Lab. both a full reconstruction and one still in a plaster field jacket. #Croctober #fossilfriday 🐊
Day 24 of #Croctober
Among the most impressive crocs I've seen first hand is the pair of Indian gharials on exhibit in the NHM Vienna. The male measures almost 5.5 meters and has been part of the collection since the early 1900s.
Among the most impressive crocs I've seen first hand is the pair of Indian gharials on exhibit in the NHM Vienna. The male measures almost 5.5 meters and has been part of the collection since the early 1900s.
October 24, 2025 at 9:10 PM
Day 24 of #Croctober
Among the most impressive crocs I've seen first hand is the pair of Indian gharials on exhibit in the NHM Vienna. The male measures almost 5.5 meters and has been part of the collection since the early 1900s.
Among the most impressive crocs I've seen first hand is the pair of Indian gharials on exhibit in the NHM Vienna. The male measures almost 5.5 meters and has been part of the collection since the early 1900s.
Today is day 23 of #Croctober
And for this purpose I want to make you mad.
This is Caririsuchus.
This specimen was taken from Brazil and sold to a private collector. It is as of right now lost to science.
And for this purpose I want to make you mad.
This is Caririsuchus.
This specimen was taken from Brazil and sold to a private collector. It is as of right now lost to science.
October 23, 2025 at 9:36 PM
Today is day 23 of #Croctober
And for this purpose I want to make you mad.
This is Caririsuchus.
This specimen was taken from Brazil and sold to a private collector. It is as of right now lost to science.
And for this purpose I want to make you mad.
This is Caririsuchus.
This specimen was taken from Brazil and sold to a private collector. It is as of right now lost to science.
#Croctober Day 22
Alligators are among the less diverse crocs today, only boasting two species from China and the USA respectively.
However during the Mid Pleistocene there was also Alligator munensis, a small species form from Thailand
Art by Michael Tripoli
Alligators are among the less diverse crocs today, only boasting two species from China and the USA respectively.
However during the Mid Pleistocene there was also Alligator munensis, a small species form from Thailand
Art by Michael Tripoli
October 22, 2025 at 8:41 PM
#Croctober Day 22
Alligators are among the less diverse crocs today, only boasting two species from China and the USA respectively.
However during the Mid Pleistocene there was also Alligator munensis, a small species form from Thailand
Art by Michael Tripoli
Alligators are among the less diverse crocs today, only boasting two species from China and the USA respectively.
However during the Mid Pleistocene there was also Alligator munensis, a small species form from Thailand
Art by Michael Tripoli
Reposted by Armin Reindl
Paludirex is such a cool name! Credit goes to Adam Yates for coming up with the name Paludirex, he was one of my co-authors on that paper.
October 20, 2025 at 9:11 PM
Paludirex is such a cool name! Credit goes to Adam Yates for coming up with the name Paludirex, he was one of my co-authors on that paper.
Day 21 of #Croctober
While modern caimans are almost seen as a joke by some people, one doesn't have to go to the Miocene to still find impressive species.
Black caimans can surpass even American alligators in length and are capable of preying on dolphins
Video by tuenio_costa
While modern caimans are almost seen as a joke by some people, one doesn't have to go to the Miocene to still find impressive species.
Black caimans can surpass even American alligators in length and are capable of preying on dolphins
Video by tuenio_costa
October 21, 2025 at 4:40 PM
Day 21 of #Croctober
While modern caimans are almost seen as a joke by some people, one doesn't have to go to the Miocene to still find impressive species.
Black caimans can surpass even American alligators in length and are capable of preying on dolphins
Video by tuenio_costa
While modern caimans are almost seen as a joke by some people, one doesn't have to go to the Miocene to still find impressive species.
Black caimans can surpass even American alligators in length and are capable of preying on dolphins
Video by tuenio_costa
For #Croctober Day 20 I want to shout out some fun etymology. To the left you see Paludirex, a large mekosuchine who's name means "swamp king". On the right is Gunggamarandu, which translates to "river boss".
Both have been named by Jorgo Ristevski
Art by Eleanor Pease
Both have been named by Jorgo Ristevski
Art by Eleanor Pease
October 20, 2025 at 5:43 PM
For #Croctober Day 20 I want to shout out some fun etymology. To the left you see Paludirex, a large mekosuchine who's name means "swamp king". On the right is Gunggamarandu, which translates to "river boss".
Both have been named by Jorgo Ristevski
Art by Eleanor Pease
Both have been named by Jorgo Ristevski
Art by Eleanor Pease
For #Croctober Day 19 we got an extant animal, the modern African Dwarf Crocodile.
The vocal range of crocs is not widely appreciated and we still learn more about them. For example, last year a paper revealed that dwarf crocs make mooing sounds
soundcloud.com/user-4989432...
The vocal range of crocs is not widely appreciated and we still learn more about them. For example, last year a paper revealed that dwarf crocs make mooing sounds
soundcloud.com/user-4989432...
October 19, 2025 at 5:49 PM
For #Croctober Day 19 we got an extant animal, the modern African Dwarf Crocodile.
The vocal range of crocs is not widely appreciated and we still learn more about them. For example, last year a paper revealed that dwarf crocs make mooing sounds
soundcloud.com/user-4989432...
The vocal range of crocs is not widely appreciated and we still learn more about them. For example, last year a paper revealed that dwarf crocs make mooing sounds
soundcloud.com/user-4989432...
t's #Croctober Day 18 with Denazinosuchus, the last goniopholidid.
While members of this group are an iconic part of Jurassic North America and Early Cretaceous Europe, this genus is a bit of an outlier, living during the Maastrichtina in the USA
Art by Andrey Atuchin
While members of this group are an iconic part of Jurassic North America and Early Cretaceous Europe, this genus is a bit of an outlier, living during the Maastrichtina in the USA
Art by Andrey Atuchin
October 18, 2025 at 8:24 PM
t's #Croctober Day 18 with Denazinosuchus, the last goniopholidid.
While members of this group are an iconic part of Jurassic North America and Early Cretaceous Europe, this genus is a bit of an outlier, living during the Maastrichtina in the USA
Art by Andrey Atuchin
While members of this group are an iconic part of Jurassic North America and Early Cretaceous Europe, this genus is a bit of an outlier, living during the Maastrichtina in the USA
Art by Andrey Atuchin
Reposted by Armin Reindl
As a paleontologist one of the best experiences ever is seeing one of my fossil discoveries restored and brought to life.
October 18, 2025 at 5:08 AM
As a paleontologist one of the best experiences ever is seeing one of my fossil discoveries restored and brought to life.
#Croctober Day 17
Remember Euthecodon from day 15?
Well the most recent fossils come from the Lake Turkana basin of Kenya, an environment it shared with the massive Crocodylus thorbjarnarsoni, an animal that may have preyed on our ancestors.
Photos by Yang Deming & Nick Perry
Remember Euthecodon from day 15?
Well the most recent fossils come from the Lake Turkana basin of Kenya, an environment it shared with the massive Crocodylus thorbjarnarsoni, an animal that may have preyed on our ancestors.
Photos by Yang Deming & Nick Perry
October 17, 2025 at 6:16 PM
#Croctober Day 17
Remember Euthecodon from day 15?
Well the most recent fossils come from the Lake Turkana basin of Kenya, an environment it shared with the massive Crocodylus thorbjarnarsoni, an animal that may have preyed on our ancestors.
Photos by Yang Deming & Nick Perry
Remember Euthecodon from day 15?
Well the most recent fossils come from the Lake Turkana basin of Kenya, an environment it shared with the massive Crocodylus thorbjarnarsoni, an animal that may have preyed on our ancestors.
Photos by Yang Deming & Nick Perry
Reposted by Armin Reindl
Everyone posts pics of the toothy end of a Deinosuchus but nobody ever appreciates all the hard work we put into it's booty, including all those fiddly osteiderms
October 16, 2025 at 9:22 PM
Everyone posts pics of the toothy end of a Deinosuchus but nobody ever appreciates all the hard work we put into it's booty, including all those fiddly osteiderms
Day 16 of #Croctober
For today lets all just take a moment to appreciate the treasure trove that is Miocene South America, a true hotspot of croc evolution thanks to its warm climate and expansive wetlands. Of particular note is the Urumaco Fm. of Venezuela
Art by Gabriel Ugueto
For today lets all just take a moment to appreciate the treasure trove that is Miocene South America, a true hotspot of croc evolution thanks to its warm climate and expansive wetlands. Of particular note is the Urumaco Fm. of Venezuela
Art by Gabriel Ugueto
October 16, 2025 at 6:17 PM
Day 16 of #Croctober
For today lets all just take a moment to appreciate the treasure trove that is Miocene South America, a true hotspot of croc evolution thanks to its warm climate and expansive wetlands. Of particular note is the Urumaco Fm. of Venezuela
Art by Gabriel Ugueto
For today lets all just take a moment to appreciate the treasure trove that is Miocene South America, a true hotspot of croc evolution thanks to its warm climate and expansive wetlands. Of particular note is the Urumaco Fm. of Venezuela
Art by Gabriel Ugueto