The size of Sillosuchus' holotype has been drastically underestimated
(and well... lets not talk about the isolated specimens)
(and well... lets not talk about the isolated specimens)
February 22, 2026 at 1:54 AM
The size of Sillosuchus' holotype has been drastically underestimated
(and well... lets not talk about the isolated specimens)
(and well... lets not talk about the isolated specimens)
"fasolasuchus ain't got shit on me", says sillosuchus, a herbivorous, bipedal poposauroid from the carnian of argentina. while the holotype is already larger than related shuvosaurids, a referred specimen suggests a maximum size of at least 11 metres
(skeletal by @literallymiguel.bsky.social)
(skeletal by @literallymiguel.bsky.social)
February 22, 2026 at 10:45 AM
"fasolasuchus ain't got shit on me", says sillosuchus, a herbivorous, bipedal poposauroid from the carnian of argentina. while the holotype is already larger than related shuvosaurids, a referred specimen suggests a maximum size of at least 11 metres
(skeletal by @literallymiguel.bsky.social)
(skeletal by @literallymiguel.bsky.social)
I didn't realize until recently that this one mounted Saurosuchus skeleton I've known from the Internet for a long time is actually chasing a large Sillosuchus.
(Both photos by Kentaro Ohno)
(Both photos by Kentaro Ohno)
February 25, 2026 at 1:18 AM
I didn't realize until recently that this one mounted Saurosuchus skeleton I've known from the Internet for a long time is actually chasing a large Sillosuchus.
(Both photos by Kentaro Ohno)
(Both photos by Kentaro Ohno)
This is NOT a dinosaur. Sillosuchus was a bipedal, beaked, herbivorous distant relative of crocodilians which lived during the Late Triassic in South America
#SciArt #Paleoart 🐍🎨
This illustration is for my book (in preparation)
#SciArt #Paleoart 🐍🎨
This illustration is for my book (in preparation)
August 15, 2023 at 2:55 PM
This is NOT a dinosaur. Sillosuchus was a bipedal, beaked, herbivorous distant relative of crocodilians which lived during the Late Triassic in South America
#SciArt #Paleoart 🐍🎨
This illustration is for my book (in preparation)
#SciArt #Paleoart 🐍🎨
This illustration is for my book (in preparation)
happy #fossilfriday! this is sillosuchus, a shuvosaurid from late triassic argentina. the shuvosaurids were beaked, bipedal herbivores belonging to the superfamily poposauroidea, which also included the carnivorous dromaeosaur lookalike poposaurus
(art by @mariolanzas.bsky.social)
(art by @mariolanzas.bsky.social)
November 29, 2024 at 4:01 PM
happy #fossilfriday! this is sillosuchus, a shuvosaurid from late triassic argentina. the shuvosaurids were beaked, bipedal herbivores belonging to the superfamily poposauroidea, which also included the carnivorous dromaeosaur lookalike poposaurus
(art by @mariolanzas.bsky.social)
(art by @mariolanzas.bsky.social)
having read the paper where nesbitt refers the giant hip and hindlimb material to sillosuchus, it's become clear that the material shares autapomorphic features with the holotype, which likely represents a juvenile :3 whereas the ~9-10m long specimen represents an adult sillosuchus
the identity of the large shuvosaurid remains found in the ischigualasto formation is somewhat contentious, due to the drastic difference in size between them and the holotype of sillosuchus, meaning that they may belong to a different species or genus
(size chart by PaleoNeolitic)
(size chart by PaleoNeolitic)
March 21, 2025 at 9:37 AM
having read the paper where nesbitt refers the giant hip and hindlimb material to sillosuchus, it's become clear that the material shares autapomorphic features with the holotype, which likely represents a juvenile :3 whereas the ~9-10m long specimen represents an adult sillosuchus
update: a new paper analysing the osteohistology of non-crocodylomorph pseudosuchians from triassic south america indicates that the holotype specimen of sillosuchus longicervix was mature or near-mature when it died, opening the possibility that the giant material belongs to a separate taxon
"fasolasuchus ain't got shit on me", says sillosuchus, a herbivorous, bipedal poposauroid from the carnian of argentina. while the holotype is already larger than related shuvosaurids, a referred specimen suggests a maximum size of at least 11 metres
(skeletal by @literallymiguel.bsky.social)
(skeletal by @literallymiguel.bsky.social)
April 17, 2026 at 3:37 PM
update: a new paper analysing the osteohistology of non-crocodylomorph pseudosuchians from triassic south america indicates that the holotype specimen of sillosuchus longicervix was mature or near-mature when it died, opening the possibility that the giant material belongs to a separate taxon
Sarita's Archovember 2024
Day 24 - Sillosuchus longicervix
#sillosuchus #sillosuchuslongicervix #poposauroid #poposauroidea #shuvosauridae #lizard #reptile #dinosaur #Archovember #Archovember2024 #dinovember #dinovember2024 #paleoart
Day 24 - Sillosuchus longicervix
#sillosuchus #sillosuchuslongicervix #poposauroid #poposauroidea #shuvosauridae #lizard #reptile #dinosaur #Archovember #Archovember2024 #dinovember #dinovember2024 #paleoart
November 25, 2024 at 4:22 AM
Sarita's Archovember 2024
Day 24 - Sillosuchus longicervix
#sillosuchus #sillosuchuslongicervix #poposauroid #poposauroidea #shuvosauridae #lizard #reptile #dinosaur #Archovember #Archovember2024 #dinovember #dinovember2024 #paleoart
Day 24 - Sillosuchus longicervix
#sillosuchus #sillosuchuslongicervix #poposauroid #poposauroidea #shuvosauridae #lizard #reptile #dinosaur #Archovember #Archovember2024 #dinovember #dinovember2024 #paleoart
Sillosuchus is possibly the only other prey item, aside from Ischigualastia, that lived with Saurosuchus that was larger than the predator.
February 25, 2026 at 1:18 AM
Sillosuchus is possibly the only other prey item, aside from Ischigualastia, that lived with Saurosuchus that was larger than the predator.
Sillosuchus and Megacerops are my current faves. Would love a documentary on convergence evolution
August 5, 2026 at 5:36 AM
Sillosuchus and Megacerops are my current faves. Would love a documentary on convergence evolution
Been working on some more Netherling depictions of prehistoric animals
List : Lystrosaurus, Livayatan, Lisowicia, and Sillosuchus
#oc | #paleoart | #fantasyart | #ocsky
List : Lystrosaurus, Livayatan, Lisowicia, and Sillosuchus
#oc | #paleoart | #fantasyart | #ocsky
October 10, 2025 at 4:33 PM
Been working on some more Netherling depictions of prehistoric animals
List : Lystrosaurus, Livayatan, Lisowicia, and Sillosuchus
#oc | #paleoart | #fantasyart | #ocsky
List : Lystrosaurus, Livayatan, Lisowicia, and Sillosuchus
#oc | #paleoart | #fantasyart | #ocsky
the identity of the large shuvosaurid remains found in the ischigualasto formation is somewhat contentious, due to the drastic difference in size between them and the holotype of sillosuchus, meaning that they may belong to a different species or genus
(size chart by PaleoNeolitic)
(size chart by PaleoNeolitic)
November 29, 2024 at 4:02 PM
the identity of the large shuvosaurid remains found in the ischigualasto formation is somewhat contentious, due to the drastic difference in size between them and the holotype of sillosuchus, meaning that they may belong to a different species or genus
(size chart by PaleoNeolitic)
(size chart by PaleoNeolitic)
yeah sillosuchus is afaik still the largest shuvosaurid currently described; the giant referred material needs to be re-evaluated
April 17, 2026 at 5:53 PM
yeah sillosuchus is afaik still the largest shuvosaurid currently described; the giant referred material needs to be re-evaluated
Neither is the Sillosuchus
February 25, 2026 at 3:49 AM
Neither is the Sillosuchus
as far as i know, this means that sillosuchus is currently the only shuvosaurid to have more than one growth stage represented in the fossil record; it would be really interesting to see a study on shuvosaurid ontogeny based on this material 👀
March 21, 2025 at 9:40 AM
as far as i know, this means that sillosuchus is currently the only shuvosaurid to have more than one growth stage represented in the fossil record; it would be really interesting to see a study on shuvosaurid ontogeny based on this material 👀
with giants like sillosuchus around, it makes sense why contemporary early sauropodomorphs in south america - like chromogisaurus - were restricted to such small sizes in the carnian
March 21, 2025 at 9:47 AM
with giants like sillosuchus around, it makes sense why contemporary early sauropodomorphs in south america - like chromogisaurus - were restricted to such small sizes in the carnian
caption: Pabwehshi, Quinkana fortirostrum, Aphaurosuchus kaiju, Razanandrongobe, Hypselorhachis, Giant Elliot formation Rauisuchian, Astorgosuchus.
Abstract about a giant loricatan vertebra (biggest known pseudosuchian?)
Text of a saurosuchus vertebra reassigned to a giant Sillosuchus
Abstract about a giant loricatan vertebra (biggest known pseudosuchian?)
Text of a saurosuchus vertebra reassigned to a giant Sillosuchus
February 18, 2026 at 8:42 PM
caption: Pabwehshi, Quinkana fortirostrum, Aphaurosuchus kaiju, Razanandrongobe, Hypselorhachis, Giant Elliot formation Rauisuchian, Astorgosuchus.
Abstract about a giant loricatan vertebra (biggest known pseudosuchian?)
Text of a saurosuchus vertebra reassigned to a giant Sillosuchus
Abstract about a giant loricatan vertebra (biggest known pseudosuchian?)
Text of a saurosuchus vertebra reassigned to a giant Sillosuchus
Do questions about Triassic Archosaurs count? Like any thoughts on the pre-dino giants. Fasolasuchus, Sillosuchus, or the giant Phytosaur Smilosuchus? I feel like stuff like this gets overshadowed by true dinosaurs so would be fun to talk about.
March 1, 2026 at 6:18 PM
Do questions about Triassic Archosaurs count? Like any thoughts on the pre-dino giants. Fasolasuchus, Sillosuchus, or the giant Phytosaur Smilosuchus? I feel like stuff like this gets overshadowed by true dinosaurs so would be fun to talk about.
From last Friday's paleosteam
Sillosuchus foraging on horsetails.
Suchomimus stares at you in curiosity.
Shuvosaurus running across fallen logs.
Fukuivenator yawing.
Sillosuchus foraging on horsetails.
Suchomimus stares at you in curiosity.
Shuvosaurus running across fallen logs.
Fukuivenator yawing.
August 10, 2023 at 6:53 AM
From last Friday's paleosteam
Sillosuchus foraging on horsetails.
Suchomimus stares at you in curiosity.
Shuvosaurus running across fallen logs.
Fukuivenator yawing.
Sillosuchus foraging on horsetails.
Suchomimus stares at you in curiosity.
Shuvosaurus running across fallen logs.
Fukuivenator yawing.
sillosuchus' size - namely its height and long neck - would also have allowed it to take advantage of higher-growing vegetation than the dicynodonts with which it lived, including the absolute unit (technical term) ischigualastia
(art by gabriel ugueto)
(art by gabriel ugueto)
March 21, 2025 at 9:53 AM
sillosuchus' size - namely its height and long neck - would also have allowed it to take advantage of higher-growing vegetation than the dicynodonts with which it lived, including the absolute unit (technical term) ischigualastia
(art by gabriel ugueto)
(art by gabriel ugueto)
El Sillosuchus, un cocodrilo bípedo de gran tamaño del triásico argentino que llegó hasta los 10 metros de largo, vegetariano colosal para su época.
November 16, 2024 at 2:15 PM
El Sillosuchus, un cocodrilo bípedo de gran tamaño del triásico argentino que llegó hasta los 10 metros de largo, vegetariano colosal para su época.
Sillosuchus: Effigia but BIG
February 22, 2026 at 4:46 AM
Sillosuchus: Effigia but BIG
I always forget how much larger that referred sillosuchus specimen is, really hope we get more material of a big shuvosaurid some day
March 23, 2025 at 9:18 PM
I always forget how much larger that referred sillosuchus specimen is, really hope we get more material of a big shuvosaurid some day