Prof. Juan Cisneros ⚒️🐉
@cisneros.bsky.social
Paleontólogo na UFPI, Teresina. Leio os ossos e as rochas. Desvendo o passado. Imigrante. Anticolonialista. Repatriação. Restituição. 🇸🇻 🇧🇷 🇿🇦
https://pt.wikipedia.org/wiki/Juan_Carlos_Cisneros
https://pt.wikipedia.org/wiki/Juan_Carlos_Cisneros
Pinned
Pros recém chegados: Sou um paleontólogo salvadorenho adotado pelo Piauí, trabalhando desde 2010 na UFPI. Pesquiso vertebrados fósseis, com foco no Período Permiano. Pra desespero de alguns, dedico-me a denunciar casos de colonialismo científico e tráfico de fósseis. Tb faço ilustração científica.
Quero
Smilodon populator, the classic saber-toothed tiger. Done in cold porcelain, 1:10 scale.
More pics: vitor_silva.artstation.com/projects/WXn...
#SciArt #Paleoart
More pics: vitor_silva.artstation.com/projects/WXn...
#SciArt #Paleoart
November 2, 2025 at 1:44 AM
Quero
Realmente, uma das espécies mais assustadoras do planeta: o Homo sapiens. #FossilFriday #Halloween
#FossilFriday #HappyHalloween One of the most truly terrifying creatures in Earth's history: Homo sapiens. Specimen is Cro-Magnon 1.
October 31, 2025 at 12:54 PM
Realmente, uma das espécies mais assustadoras do planeta: o Homo sapiens. #FossilFriday #Halloween
Reposted by Prof. Juan Cisneros ⚒️🐉
Random animal figures near and on the desk today...
October 24, 2025 at 9:42 PM
Random animal figures near and on the desk today...
Reposted by Prof. Juan Cisneros ⚒️🐉
North American big cats of the late Pleistocene: Panthera and Smilodon. At least one and possibly two pantherine have been found in Alberta, as have some Smilodon fragments from near Medicine Hat, which seem to be at the northwestern extent of this cat’s range #FossilFriday
October 24, 2025 at 5:07 PM
North American big cats of the late Pleistocene: Panthera and Smilodon. At least one and possibly two pantherine have been found in Alberta, as have some Smilodon fragments from near Medicine Hat, which seem to be at the northwestern extent of this cat’s range #FossilFriday
Reposted by Prof. Juan Cisneros ⚒️🐉
This #fossilfriday, we move in time to the #Permian when the #amphibian Seymouria sanjuanensis lived in what is New Mexico today. Clusters of large animals like this one are rarely found in the #fossil record, especially this well preserved.
Photo: Amy Henrici
Photo: Amy Henrici
October 24, 2025 at 6:17 PM
This #fossilfriday, we move in time to the #Permian when the #amphibian Seymouria sanjuanensis lived in what is New Mexico today. Clusters of large animals like this one are rarely found in the #fossil record, especially this well preserved.
Photo: Amy Henrici
Photo: Amy Henrici
Reposted by Prof. Juan Cisneros ⚒️🐉
Happy #FossilFriday! Today is my last day at the AMNH before I return to Oxford so in honor of that here’s one of my favorite fossils on display here, a full skeleton of Cotylorhynchus romeri! Cotylorhynchus is a caseid, which were among the earliest large terrestrial herbivores on Earth! 🧪⚒️🦊
October 24, 2025 at 6:27 PM
Happy #FossilFriday! Today is my last day at the AMNH before I return to Oxford so in honor of that here’s one of my favorite fossils on display here, a full skeleton of Cotylorhynchus romeri! Cotylorhynchus is a caseid, which were among the earliest large terrestrial herbivores on Earth! 🧪⚒️🦊
Reposted by Prof. Juan Cisneros ⚒️🐉
#FossilFriday Huayracursor jaguensis, an early sauropodomorph from Argentina. 🧪⚒️🦖
paleonerdish.wordpress.com/2025/10/21/m...
paleonerdish.wordpress.com/2025/10/21/m...
October 24, 2025 at 1:08 PM
#FossilFriday Huayracursor jaguensis, an early sauropodomorph from Argentina. 🧪⚒️🦖
paleonerdish.wordpress.com/2025/10/21/m...
paleonerdish.wordpress.com/2025/10/21/m...
Reposted by Prof. Juan Cisneros ⚒️🐉
happy #fossilfriday! this is panderodus, a jawless fish that lived between the middle ordovician and the late devonian. the species p. unicostatus was one of the few vertebrates of the silurian period to hunt large prey
(art by mightyfossils)
(art by mightyfossils)
October 24, 2025 at 2:16 PM
happy #fossilfriday! this is panderodus, a jawless fish that lived between the middle ordovician and the late devonian. the species p. unicostatus was one of the few vertebrates of the silurian period to hunt large prey
(art by mightyfossils)
(art by mightyfossils)
Reposted by Prof. Juan Cisneros ⚒️🐉
A side-on snapshot of the skull of Megacerops, a #brontothere (‘thunder beast’) from North America for this #FossilFriday. Sporting large bulbous horns, these large, ancient mammals looked a bit like rhinos 🦏 but are actually more closely related to horses 🐎.
#Paleontology #Science #Cenozoic
🧵1/
#Paleontology #Science #Cenozoic
🧵1/
October 24, 2025 at 2:31 PM
A side-on snapshot of the skull of Megacerops, a #brontothere (‘thunder beast’) from North America for this #FossilFriday. Sporting large bulbous horns, these large, ancient mammals looked a bit like rhinos 🦏 but are actually more closely related to horses 🐎.
#Paleontology #Science #Cenozoic
🧵1/
#Paleontology #Science #Cenozoic
🧵1/
Reposted by Prof. Juan Cisneros ⚒️🐉
Who here loves big extinct cephalopods? in my opinion the Ordovician period got the best!
🎨Illustration from my book DINOSAURS: Understanding Prehistoric Life and Geological Time
📚Get your copy here: a.co/d/6Y8ekXW
#sciart #fossiladdict #evolution #paleoart #prehistoric
🎨Illustration from my book DINOSAURS: Understanding Prehistoric Life and Geological Time
📚Get your copy here: a.co/d/6Y8ekXW
#sciart #fossiladdict #evolution #paleoart #prehistoric
October 24, 2025 at 2:36 PM
Who here loves big extinct cephalopods? in my opinion the Ordovician period got the best!
🎨Illustration from my book DINOSAURS: Understanding Prehistoric Life and Geological Time
📚Get your copy here: a.co/d/6Y8ekXW
#sciart #fossiladdict #evolution #paleoart #prehistoric
🎨Illustration from my book DINOSAURS: Understanding Prehistoric Life and Geological Time
📚Get your copy here: a.co/d/6Y8ekXW
#sciart #fossiladdict #evolution #paleoart #prehistoric
Reposted by Prof. Juan Cisneros ⚒️🐉
Os Caçadores de Mamutes - Jean M. Auel
October 22, 2025 at 3:28 PM
Os Caçadores de Mamutes - Jean M. Auel
Mas é o Sul Global que não sabe cuidar do seu patrimônio...
PARA TUDO o Louvre já tinha sido roubado PELA MESMA JANELA em 1976.
MIL NOVECENTOS E SETENTA E SEIS, A MESMA FUCKING JANELA MANOLO
www.nbcnews.com/news/amp/rcn...
MIL NOVECENTOS E SETENTA E SEIS, A MESMA FUCKING JANELA MANOLO
www.nbcnews.com/news/amp/rcn...
October 22, 2025 at 11:47 AM
Mas é o Sul Global que não sabe cuidar do seu patrimônio...
Reposted by Prof. Juan Cisneros ⚒️🐉
Os crinoides são invertebrados marinhos, parentes dos uriços e das estrelas do mar que vivem ancorados no fundo. Hoje são raros mas em outras eras geológicas eles eram mais diversos... e grandes!
For Crinoid out loud!
Kandace, the newest member of the #HMNS Paleo Lab team, explains the story fossilized in this grand slab of sediment from Germany.
Now on display in the Morian Hall of Paleontology.
#SeaLily #NotAPlant #FossilsThatArentDinosaurs #hmns #houston #museum #science
Kandace, the newest member of the #HMNS Paleo Lab team, explains the story fossilized in this grand slab of sediment from Germany.
Now on display in the Morian Hall of Paleontology.
#SeaLily #NotAPlant #FossilsThatArentDinosaurs #hmns #houston #museum #science
October 21, 2025 at 12:50 PM
Os crinoides são invertebrados marinhos, parentes dos uriços e das estrelas do mar que vivem ancorados no fundo. Hoje são raros mas em outras eras geológicas eles eram mais diversos... e grandes!
Tem ficção científica que não presta e tem esta aqui 👇🏼
October 21, 2025 at 12:28 PM
Tem ficção científica que não presta e tem esta aqui 👇🏼
Reposted by Prof. Juan Cisneros ⚒️🐉
Happy #InternationalSlothDay! To celebrate w/ a paleontology twist, here's a fossilized skull and lower jaw of the extinct Pleistocene (Ice Age) ground sloth Paramylodon harlani, discovered in 2018 during excavation for the LA subway's La Cienega Station. 🧪🦥 #WorldSlothDay #MylodontMonday
October 20, 2025 at 6:15 PM
Happy #InternationalSlothDay! To celebrate w/ a paleontology twist, here's a fossilized skull and lower jaw of the extinct Pleistocene (Ice Age) ground sloth Paramylodon harlani, discovered in 2018 during excavation for the LA subway's La Cienega Station. 🧪🦥 #WorldSlothDay #MylodontMonday
Reposted by Prof. Juan Cisneros ⚒️🐉
So it's #InternationalSlothDay, so here is a Paramylodon from Big Bone Luck
October 20, 2025 at 8:31 PM
So it's #InternationalSlothDay, so here is a Paramylodon from Big Bone Luck
Reposted by Prof. Juan Cisneros ⚒️🐉
O argumento mais escutado pelo Sul Global, quando solicitarmos ,a restituição de um bem cultural, é que não sabemos cuidar do nosso patrimônio. Quem cuida direito são eles.
g1.globo.com/mundo/notici...
g1.globo.com/mundo/notici...
Roubo no Louvre: Joias de valor inestimável são levadas
Oito joias foram roubadas do Louvre, em Paris, neste domingo (19), incluindo a coroa da imperatriz Eugênia. Visitação está suspensa e polícia investiga o caso.
g1.globo.com
October 19, 2025 at 9:01 PM
O argumento mais escutado pelo Sul Global, quando solicitarmos ,a restituição de um bem cultural, é que não sabemos cuidar do nosso patrimônio. Quem cuida direito são eles.
g1.globo.com/mundo/notici...
g1.globo.com/mundo/notici...
O argumento mais escutado pelo Sul Global, quando solicitarmos ,a restituição de um bem cultural, é que não sabemos cuidar do nosso patrimônio. Quem cuida direito são eles.
g1.globo.com/mundo/notici...
g1.globo.com/mundo/notici...
Roubo no Louvre: Joias de valor inestimável são levadas
Oito joias foram roubadas do Louvre, em Paris, neste domingo (19), incluindo a coroa da imperatriz Eugênia. Visitação está suspensa e polícia investiga o caso.
g1.globo.com
October 19, 2025 at 9:01 PM
O argumento mais escutado pelo Sul Global, quando solicitarmos ,a restituição de um bem cultural, é que não sabemos cuidar do nosso patrimônio. Quem cuida direito são eles.
g1.globo.com/mundo/notici...
g1.globo.com/mundo/notici...
Reposted by Prof. Juan Cisneros ⚒️🐉
In 2022, I was lucky to be part of the team (incl @ucalgaryscience.bsky.social students & Yukon gov't geologists) that recovered an astonishingly well-preserved baby mammoth in the Yukon gold fields. I encourage you to watch the trailer for a brand new documentary: vimeo.com/1125006498 🧪⚒️🦣
October 17, 2025 at 11:34 AM
Reposted by Prof. Juan Cisneros ⚒️🐉
Reposted by Prof. Juan Cisneros ⚒️🐉
Steve Brusatte reconstrói a evolução dos mamíferos em um livro obrigatório na sua estante! 🐘
www.momentumsaga.com/2024/08/rese...
www.momentumsaga.com/2024/08/rese...
Resenha: Ascensão e reinado dos mamíferos, de Steve Brusatte
Steve Brusatte reconstrói a evolução dos mamíferos em um livro obrigatório na sua estante! 🐘
www.momentumsaga.com
October 12, 2025 at 11:33 AM
Steve Brusatte reconstrói a evolução dos mamíferos em um livro obrigatório na sua estante! 🐘
www.momentumsaga.com/2024/08/rese...
www.momentumsaga.com/2024/08/rese...
Reposted by Prof. Juan Cisneros ⚒️🐉
October 11, 2025 at 5:26 PM
Reposted by Prof. Juan Cisneros ⚒️🐉
Muito louco pensar que aqui no Nordeste já teve araucárias, ursos, tigres dente-de-sabre, e preguiças gigantes
Um galinho de Brachyphyllum, um tipo de araucária que viveu no Nordeste há +100 milhões de anos. #FossilFriday
October 11, 2025 at 12:57 PM
Muito louco pensar que aqui no Nordeste já teve araucárias, ursos, tigres dente-de-sabre, e preguiças gigantes
Reposted by Prof. Juan Cisneros ⚒️🐉
October 10, 2025 at 8:56 PM