Sergio Sánchez Fenollosa

S. Sánchez-Fenollosa et al. (2025)
Unravelling ornithopod diversity in the Late Jurassic coastal ecosystems of Eastern Iberia (Spain)
Rivista Italiana di Paleontologia e Stratigrafia 131(3): 529-546
DOI: doi.org/10.54103/203...
riviste.unimi.it/index.php/RI...

🆕📢 I'm pleased to share our new paper!!

🚨 Important implications for Late Jurassic ornithopod diversity & their ecology in Iberia.

"UNRAVELLING ORNITHOPOD DIVERSITY IN THE LATE JURASSIC COASTAL ECOSYSTEMS OF EASTERN IBERIA (SPAIN)"

👉 Open Access: doi.org/10.54103/203...

Last week I had the opportunity to attend the 10th Symposium about Dinosaurs Palaeontology and their Environment, where I presented two contributions focused on ornithopod and stegosaurian dinosaurs.

More news on these research projects will be shared soon. Stay tuned!

Hi all, me, @richardjbutler.bsky.social and the amazing UK-US-Moroccan team are delighted to announce that.. we have a new specimen of Spicomellus AND IT'S WAY WEIRDER AND WAY COOLER THAN WE EVER IMAGINED!!

Oblitosaurus and Turiasaurus

Um novo dinossauro neornitísquio da Formação Tiaojishan do Jurássico Superior do norte da China doi.org/10.7717/peer...

The fossils from our new paper are now on display at the Museo Aragonés de Paleontología (Teruel) 👀

Europe’s most complete stegosaurian skull unearthed in Teruel, Spain | Blog A new study by palaeontologist from the Fundación Dinópolis, published in the journal Vertebrate Zoology, rewrites the evolutionary history of this dino group.

If you like dinosaurs, you're going to enjoy this discovery published in Vertebrate Zoology, a journal by @sgn.one hosted on the ARPHA Platform - the most complete stegosaurian skull ever found in Europe!

blog.pensoft.net/2025/05/29/e...

El cráneo de estegosaurio más completo de Europa sale a la luz en Riodeva Una nueva investigación realizada por un equipo paleontológico de la Fundación Dinópolis en la revista científica Vertebrate Zoology, analiza el cráneo de estegosaurio más completo de Europa y reescribe la historia evolutiva de este grupo de dinosaurios

El cráneo de estegosaurio más completo de Europa sale a la luz en Riodeva y reescribe la historia evolutiva de este grupo de dinosaurios

You can also check our press release (in Spanish) at: t.co/pukJ82vJIs

New paper out! 🚨🆕 "New insights into the phylogeny and skull evolution of stegosaurian dinosaurs: An extraordinary cranium from the European Late Jurassic (Dinosauria: Stegosauria)".

👉 Freely available at: doi.org/10.3897/vz.7...

A hand placing plastic pieces from a seabird on a paper towel

8 birds.
1 day.
208 g of plastic.
2165 pieces.

It's a good time to remind folks that you can't do the "high impact big picture studies" without the "not worth publication because it's only of regional interest" localities and the "merely specimen ID and taxonomy" research.

Archaeopteryx fossil in classic dinosaur death pose. Tracts of feathers are highlighted in various colors

Illustration by Michael Rothman shows black and white toothed bird from behind with wings outstretched

It’s publication day for the Chicago Archaeopteryx! Check out the paper in Nature by Jingmai O’Connor and colleagues for details on this specimen’s uniquely preserved anatomy. www.nature.com/articles/s41...

Fossilized bones from the snout of several bird-like dinosaurs, representing different individuals of different ages from the same species.

Troodontid dinosaurs from the Two Medicine Formation (Late Cretaceous of Montana) and a case for retaining use of the name Troodon: www.cambridge.org/core/journal... 🪶🧪 (📷Varricchio et al.)

El Parque del Alamillo, un magnífico espacio natural en Sevilla, tiene cada vez más gatos, hasta el punto de no ser viable seguir anillando aves allí
La liberación de fochas cornudas, una especie críticamente amenazada, puede quedar en comida de gatos
Lo cuenta GOSUR: www.gosur.net/index.php/ac...

A short I made a while back on the giant Aulacerid sponges in Late Ordovician Peary Land

#SciArt #paleoart #Ordovician #aulacera #sponge #porifera

Pequeño pero matón / Little but tough 👊🏼🎵

Emberiza calandra

In honour of the recent paper on Nanosaurus by me and @tweetisaurus.bsky.social (may it rest in peace) here’s a little 3D model I made of the truly awful holotype specimen named by Marsh in 1877, which can be found the in the collections of the Yale Peabody Museum of Natural History

Unveiling the Myth: Harpy Eagle Harpia harpyja Attacks on a Human in the Amazon Forest We report here on an unexpected attack by a harpy eagle on a 29-year-old woman near a tourist camp in the French Guiana Amazon rainforest.

Epelboin, L., Mutricy, R., Pelletier, V., Fremery, A., Dechelle, M., Ottema, O., Pfefer, S., Sinasac, J., Uriot, S., Claessens, O. and Miranda, E.B.P. (2025), Unveiling the Myth: Harpy Eagle Harpia harpyja Attacks on a Human in the Amazon Forest. Ecol Evol, 15: e71266. doi.org/10.1002/ece3...

Reconstruction of Gigantspinosaurus walking

Gigantspinosaurus sichuanensis with its huge lateral spikes was one of the most bizarre stegosaurs

Gigantspinosaurus lived during the Late Jurassic in Asia. What do you think the function of those lateral, back-pointing spikes was?

#paleoart #sciart #dinosaurs #art

Las exaltaciones líricas de "nuestra lengua común" olvidan el proceso de humillación y violencia que hay detrás de la expansión del castellano en España y fuera de ella. Como sucede con casi cualquier otra lengua hegemónica.

A Review of Nanosaurus agilis Marsh and Other Small-Bodied Morrison Formation “Ornithopods” A variety of small ornithischian dinosaur specimens collected from the Upper Jurassic Morrison Formation of Colorado and Wyoming were described by O.C. Marsh in the late 19th century. These include Na...

New paper day! In which me and @profpaulbarrett.bsky.social do away with Nanosaurus, and suggest Drinker *might* be a pachycephalosaur.

bioone.org/journals/bul...

St. George, famed slayer of endangered reptiles, squares up to an enormous, dark Tyrannosaurus in the dead of night. His white horse rears in panic at the looming giant, who casts a great shadow over them both. George aims his lance up, conscious that his weapon is a mere needle to his 10-tonne opponent. "I much preferred being painted by Paolo Uccello", he thought to himself. "He made the reptiles small, gangly, and fictional. I didn't sign up to fight real giant reptiles, and I _especially_ didn't sign up for being painted by someone who clearly wants the reptiles to win." Moments later, George's feeble lance broke upon the scaly, rib-lined belly of the tyrannosaur. He had a split second to respond: now defenceless, flight was his only choice! But before he could even begin to steer his horse away, he was wrenched from his mount and tossed back into the dinosaur's jaws. His final sensation was being crushed by spike-like teeth, his flesh mangled and cut by his own dark armour. The chewy flesh and metal confused the king tyrant, but she swallowed him whole anyway. The experience reminded her of eating an ankylosaur, but this had a greater taste of... justice? As if centuries of reptilian persecution by humans had been avenged, in a minor way at least. She walked off into the night, not bothering to chase the horse, who galloped into the nearby treeline. Her legend, Tyrannosaurus the St. George Killer, had begun.

I missed #StGeorgesDay, but what the heck: here's St George vs. #Tyrannosaurus for #FossilFriday. You don't have to look hard for the Paolo Uccello reference, but this Tyrannosaurus looks to be giving St. George a tougher time than the dragon in his painting. #paleoart #sciart #dinosaur

We have published the first evidence of pathological vertebrae of Simosauridae, identified in the holotype of Paludidraco multidentatus, from the Upper Triassic of Spain (via @fossilrecord.bsky.social : fr.pensoft.net/article/1487...). Check it out!

Fifteen different skulls of the prehistoric carnivore the dire wolf, all brown against an orange-yellow background

If you want to see dire wolves, the place to go is LA’s La Brea asphalt seep. Thousands of individuals were trapped and preserved there, a view of populations over time and unique moments. The collection even includes a broken, healed, Aenocyon dirus baculum from what was surely a dire moment. 🧪

Reconstructed skeletal diagram and fossilized bones of a strange herbivorous dinosaur with large claws on its two-fingered hands.

New therizinosaurian dinosaur with two-fingered hands, Duonychus tsogtbaatari: www.cell.com/iscience/ful... Have been looking forward to this one ever since hearing about it at the 2015 SVP meeting! 🧪 (📷Kobayashi et al.)

How to describe a new species in zoology and avoid mistakes Abstract. Taxonomy is the science of discovering, naming, describing, diagnosing, identifying, and classifying different kinds of taxa, from species to fam

#Taxonomy is the science of naming & classifying species, laying the foundations for all biological science. But how do you do it? Why not check out this paper describing just that, on this momentous #TaxonomistAppreciationDay!

academic.oup.com/zoolinnean/a...

Epidermal scale growth, allometry and function in non‐avian dinosaurs and extant reptiles Scale shapes in non-avian dinosaurs and extant reptiles are mostly retained through growth. However, positive scale allometry and proportional differences in scale breadth are also detected, which ar...

Enriquez, N.J., Campione, N.E., Hendrickx, C. & Bell, P.R. (2025) Epidermal scale growth, allometry and function in non-avian dinosaurs and extant reptiles. Journal of Anatomy, 00, 1–34. Available from: doi.org/10.1111/joa....

And here's some pure Bittern booming to enjoy - because, well...Bitterns! Booming!