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cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉
@cisneros.bsky.social
5.7K followers 610 following 500 posts
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
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cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · Oct 20
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.
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cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · 15h
Uma planta que todo mundo deveria ter no quintal. Cresce rápido e fácil, dá pra preparar de tantas maneiras, substitui espinafre e couve.
revistaforum.com.br
Revista Fórum @revistaforum.com.br · 16h
Rica em proteínas e antioxidantes, barata e desconhecida: aprenda uma receita com taioba

Confira:
Rica em proteínas e antioxidantes, barata e desconhecida: aprenda uma receita com taioba
Descubra o que a ciência diz sobre essa PANC e dicas de como prepará-la para usufruir melhor de seus benefícios
revistaforum.com.br
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Reposted by Prof. Juan Cisneros ⚒️🐉
emilyart.bsky.social
Emily Stepp @emilyart.bsky.social · 1d
#Paleoctober2025 day 6 paleoart sketch of the giant Late Triassic ichthyosaur Ichthyotitan.

#Paleoctober #Paleoart #ichthyosaur #Ichthyotitan
Painterly hour long digital sketch of the massive ichthyosaur in cool ocean waters with much smaller ammonites swimming past.
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Reposted by Prof. Juan Cisneros ⚒️🐉
cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · 2d
O Piauí esconde florestas petrificadas -sim, isso é um tronco de milhões de anos- como nenhum outro estado do Brasil. Dia mundial da geodiversidade UNESCO. #geodiversityday
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cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · 2d
Os de Mata são triássicos, os nossos são permianos (+antigos). Os nossos são maiores, como se pode ver na foto. A diferença de Mata, muitos dos nossos troncos estão na posição vertical, ou seja, em posição de vida. Mas os de Mata são bem interessantes e representam espécies diferentes das nossas.
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cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · 2d
O Piauí esconde florestas petrificadas -sim, isso é um tronco de milhões de anos- como nenhum outro estado do Brasil. Dia mundial da geodiversidade UNESCO. #geodiversityday
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cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · 2d
O rei dos mares jurássicos.
bobnichollsart.bsky.social
Bob Nicholls Art @bobnichollsart.bsky.social · 2d
A zoom into my reconstruction of the "sea-rex," a Jurassic pliosaur. This piece was commissioned by The Etches Collection, which is where the spectacular skull is exhibited. Also pictured is a smaller "sea-rex"

#SciArt #PaleoArt #MarineReptiles #Pliosaur #Pliosaurus #SeaRex #Jurassic #JurassicWorld
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Reposted by Prof. Juan Cisneros ⚒️🐉
cascoclauda.bsky.social
Claude ✡️🦖🦕 @cascoclauda.bsky.social · 2d
my friend @gulop1th3cuz.bsky.social has asked me to write a thread about his favourite extinct animal, the giant ground sloth megatherium, for his birthday! happy birthday gulo 🥳
(art by @haiderjaffri.bsky.social)
art depicting megatherium standing in a rugged landscape, with a snow-capped mountain in the background a skeletal mount of megatherium standing on its hindlegs
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Reposted by Prof. Juan Cisneros ⚒️🐉
mariamariahclara.bsky.social
María Clara - Diva of Discontent by Bluesky @mariamariahclara.bsky.social · 5d
Fui fazer uma visita domiciliar para paciente acamado e encontrei essa lindona no quintal deles.
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Reposted by Prof. Juan Cisneros ⚒️🐉
cenofreak88.bsky.social
cenofreak88.bsky.social @cenofreak88.bsky.social · 5d
Welcome to the first instalment of #gomphtober2025 where we spotlight gomohotheres and their relatives. Kicking things off is Stegomastodon Arizona from the pliocene of Arizona.

#fossilfriday #smithsonian #nationalmuseumofnaturalhistory #elephant #fossil #prehistoricarizona #paleontology
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Reposted by Prof. Juan Cisneros ⚒️🐉
coastalpaleo.bsky.social
Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 5d
#fossilfriday The beautiful skull of the dwarf baleen whale Herpetocetus bramblei (Cetotheriidae) I discovered and excavated as an undergrad from the 5-6 myo Purisima Formation near Santa Cruz, California. Now in @ucmpberkeley.bsky.social collections!
A partial skull of a small baleen whale; it is about a meter long, light brown in color, with a long blowhole and a narrow, pyramidal braincase with high muscle attachment crests and a large eye socket. It's sitting on a white sheet with scale bars next to it.
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Reposted by Prof. Juan Cisneros ⚒️🐉
jhemiptera.bsky.social
JH @jhemiptera.bsky.social · 5d
#FossilFriday Tambatitanis skeleton at the Tamba Dinosaur Museum, Japan
Replica of the Tambatitanis, showing its preserved parts. Skeleton of Tambatitanis
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Reposted by Prof. Juan Cisneros ⚒️🐉
mosasaurologist.bsky.social
Anthony Tackles Dead Cows @mosasaurologist.bsky.social · 5d
It's the first ##FossilFriday for Croctober! Here is the prototype reconstruction of Deinosuchus schwimmeri, from the late Cretaceous of Georgia and other places around the south.

I finally got a Pic with me in it for scale so you can see just how huge this dead gator was.🐊🧪
Gigantic skeleton of a gator in the museum atrium with curator for scale
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Reposted by Prof. Juan Cisneros ⚒️🐉
notthatmarsh.bsky.social
Adam Marsh @notthatmarsh.bsky.social · 5d
a pretty skull of the phytosaur Redondasaurus collected from the Navajo Nation and housed at @museumofnaz, on loan to PEFO #FossilFriday 🦖🧪
A gray white reptile skull in a black sand table
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Reposted by Prof. Juan Cisneros ⚒️🐉
xrciseguy.bsky.social
GDLeahy @xrciseguy.bsky.social · 5d
#FossilFriday: Velociraptor mongoliensis, a dromaeosaurid theropod from the Upper Cretaceous of Mongolia. Though famous for its appearances in the #Jurassicpark and #jurassicworld films, the Velociraptor in those movies is actually modeled after Deinonychus, a much older theropod.
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Reposted by Prof. Juan Cisneros ⚒️🐉
ferwen.bsky.social
Ferwen @ferwen.bsky.social · 5d
#FossilFriday ‘Black Beauty’, one of the smallest-known specimens of Tyrannosaurus rex, displayed at The Royal Tyrell Museum in Calgary, Alberta.
wp.me/p3ihHu-1MX
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Reposted by Prof. Juan Cisneros ⚒️🐉
smilodonichthys.bsky.social
It's Gloria! @smilodonichthys.bsky.social · 5d
#FossilFriday

Fossil sea star 🌊⭐️, found by Deanna Graham on Hornby Island in British Columbia.
A picture of a fossil sea star with a label that says "LOOK but don't EAT! Deanna Graham's Hornby find." Same sea star, just at a closer distance so you can see the details better.
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Reposted by Prof. Juan Cisneros ⚒️🐉
lizardguyaaron.bsky.social
LizardGuyAaron @lizardguyaaron.bsky.social · 5d
It’s #FossilFriday and I’m spotlighting Dunkleosteus!

Dunkleosteus is a prehistoric fish called a placoderm that lived in the Devonian, millions of years before the dinosaurs. It had tough armor and self-sharpening jaws. This one is from Charleston, SC.
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cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · 4d
Esses eu quero longe.
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Reposted by Prof. Juan Cisneros ⚒️🐉
cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · 5d
Esta é com um gorgonópsio. Pense num carnívoro do tamanho de um urso, com dentes de sabre, rondando as planícies africanas muito antes que os dinossauros. Vontade de descobrir um destes no Brasil. #FossilFriday
A foto mostra o meu rosto do lado esquerdo (usando uma camiseta preta), e um crânio de um gorgonópsio do lado direito, sobre uma mesa de laboratório. O crânio é cinza e são visíveis os dentes, incluindo um grande canino. A parede do fundo é branca. Foto feita no Museu Sul-Africano Iziko, em Cidade do Cabo em 2022.
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Reposted by Prof. Juan Cisneros ⚒️🐉
abpalaeosociety.bsky.social
Alberta Palaeontological Society @abpalaeosociety.bsky.social · 5d
Did you know that mastodons used to live in Alberta? This jaw was found in Edmonton and is currently housed at the Royal Alberta Museum. Mastodon are relatives of elephants and have very distinctive jaws and teeth.

#fossilfriday #palaeontology #paleontology #mastodon #fossils #mammals #alberta
Two lower jaws of a mastodon in a museum display. The teeth have very high cusps. In the corner is a skeletal of a mastodon next to a person, showing that the person roughly comes up to the mastodon's shoulder.
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Reposted by Prof. Juan Cisneros ⚒️🐉
historicalbiology.bsky.social
Historical Biology @historicalbiology.bsky.social · 5d
For #FossilFriday, we have a fossil from our editor Verónica Vennari.

This is Argentiniceras noduliferum, an Early Cretaceous ammonite & index fossil specimen from the Vaca Muerta Formation in the Neuquén Basin, Argentina.
🐚
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Reposted by Prof. Juan Cisneros ⚒️🐉
jfcudennec.bsky.social
Jean-François Cudennec @jfcudennec.bsky.social · 5d
For #FossilFriday, meet Inoceramus : the largest bivalve to ever exist. This genus lived in the Cretaceous seas of North America and Europe.

This one is 178 cm long. And look at these rings ! It must an amazing palaeoenvironmental recorder to work with 😍

#PaleoSky 🦑 🧪 ⚒️
A shell of a bivalve mollusc that was found in 1952 in the valley Qilakitsoq on the Nuussuaq peninsula in western Greenland. The scientific name of these bivalves is Inoceramus steenstrupi. They lived between 83 and 63 million years ago. These are the largest bivalves ever to exist. It is thought that they lived in an oxygen-poor environment and that they layed unattached on the sea floor filtering plankton and detritus from the water. The shell is 178 cm (70 inch) long. The other half of the bivalve is in the Geological Museum of Copenhagen. ___ On display at the Greenland Institute of Natural Resources. Link to this new Institute filled with many hallway displays at www.natur.gl/ hey now, "moi" for scale and a line-up of 2014 Nuuk Geoscience Workshop geologists waiting for their turn with the mighty mollusk. The Nuuk display is geotagged instead of the Cretaceous fossil-bearing rock formation on the opposite side of Greenland. Photo by H. Steenkamp with permission for my photo-shop'd posting.
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Reposted by Prof. Juan Cisneros ⚒️🐉
nhmbryozoa.bsky.social
Paul D. Taylor @nhmbryozoa.bsky.social · 5d
#FossilFriday An unused view of the bizarre tooth-whorl of the Permian cartilaginous fish Helicoprion taken for ‘Fossils. The Essential Guide’.
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cisneros.bsky.social
Prof. Juan Cisneros ⚒️🐉 @cisneros.bsky.social · 5d
Esta é com um gorgonópsio. Pense num carnívoro do tamanho de um urso, com dentes de sabre, rondando as planícies africanas muito antes que os dinossauros. Vontade de descobrir um destes no Brasil. #FossilFriday
A foto mostra o meu rosto do lado esquerdo (usando uma camiseta preta), e um crânio de um gorgonópsio do lado direito, sobre uma mesa de laboratório. O crânio é cinza e são visíveis os dentes, incluindo um grande canino. A parede do fundo é branca. Foto feita no Museu Sul-Africano Iziko, em Cidade do Cabo em 2022.
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Reposted by Prof. Juan Cisneros ⚒️🐉
martinenserink.bsky.social
Martin Enserink @martinenserink.bsky.social · 7d
A momentous occasion: 'Java Man' is going back to Indonesia, along with more than 28,000 other fossils that Dutch scientist Eugène Dubois collected during the colonial era.

My story: www.science.org/content/arti...
‘Thrilled’ Indonesian scientists celebrate return of fossil trove from the Netherlands
The items to be returned, which include Java Man, were collected during the colonial era
www.science.org
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