Brontops

Maybe a bit late for web timing, but ehy, NEW PAPER ON #fossilfriday!!!

I am proud to present you Haolong dongi gen. nov. sp. nov., a new hadrosauroid from the Early Cretaceous of China!
The specimen, almost complete, is a juvenile iguanodontian from the Yixian Formation of the Barremian (125 Mya).

Life reconstruction of Haolong in dark forest environment, by Fabio Manucci.

Montage showing scales and spikes of Haolong, with anatomical position marked on life reconstruction of whole animal. From Huang et al. 'Cellular-level preservation of cutaneous spikes in an Early Cretaceous'. iguanodontian dinosaur

Really taken with Haolong dongi, out today from Jiandong Huang, Pascal Godefroit and team. Just submitted news article on it. An iguanodontian with abundant hollow spikes across the neck and body, projecting from among conventional basement scales, and with rows of plate-like scales along the tail.

Haolong dongi, amazing new spiny (yes,really) iguanodontian from early cretaceous china #sciart

Since it's #haolong day and #fossilfriday here's some #iguanodontian specimens from Liaoning, spanning from 40 cm to over 8 m, many preserved with soft tissue.

Manipulonyx, new WEIRD alvarezsaurid
A.O. Averianov, A.V. Lopatin and A.A. Atuchin (2025)
Forelimb structure and function in a new Late Cretaceous parvicursorine theropod dinosaur from Mongolia
Proceedings of the Zoological Institute RAS 329(4): 382–408 www.zin.ru/journals/tru...
…

Wang, L., Li, X., Wen, Q. et al. Gastroliths in hatchling Psittacosaurus show early dietary habits. Sci. China Earth Sci. (2025). link.springer.com/article/10.1...

Latest paper in the Lance Grande volume is out! Several more are at proof stage so should be appearing soon.

Untangling the identity of Romualdo pterosaurs: ‘Cearadactylus atrox’ as a junior synonym of Brasileodactylus araripensis (Pterosauria, Anhangueridae) The Romualdo Formation (Aptian–Albian) of the Araripe Basin is renowned for its exceptional three-dimensional fossil preservation, including a rich pterosaur assemblage. One of such pterosaurs from...

Untangling the identity of Romualdo pterosaurs: ‘Cearadactylus atrox’ as a junior synonym of Brasileodactylus araripensis (Pterosauria, Anhangueridae): Historical Biology: Vol 0, No 0 - Get Access www.tandfonline.com/doi/full/10....

The occiput of Amargasaurus (Sauropoda, Dicraeosauridae): Reconstruction of the craniocervical muscular insertions with comments on feeding strategy Sauropods achieved gigantism partly through neck elongation, but the role of soft tissues remains unclear. We reconstruct the craniocervical muscles of Amargasaurus cazaui (Lower Cretaceous, Argentin...

A região occipital do Amargasaurus (Sauropoda, Dicraeosauridae): reconstrução das inserções musculares craniocervicais, com comentários sobre estratégia alimentar onlinelibrary.wiley.com/doi/10.1111/...

New paper alert! (My first!)

This is a benchmark paper on all NPS fossils within the State of Utah through 2024. Loads of illustrations by me and pic by coauthors and collaborators. Open access, free to download! Thanks to all who made this possible!

giw.utahgeology.org/giw/index.ph...

Skull roof elements of Tuojiangosaurus. The supraorbital (n.6)show and interesting pattern of conspicuous tubercles. While stegosaurs have often ornamentations in the shape of grooves and pits the supraorbital of T. vaguely recall the caputegulae of ankylosaurs #thyreophora

Side view of the mystery bone

Top view of the mystery bone

Front? View of mystery bone

A little #FossilFriday mystery from the Hell Creek for you other experts. I found this in a bunch of pieces trailing down the outcrop. What is it? Smooth on the underside, horns. Sutures?

Definitely not Pachycephalosaurus, can't place it on a ceratopsian either. 🦕🧪

The tips of the left squamosal bones from 2 horned dinosaurs on a red cloth, curatorial thumbs up for scale

I'm putting the new weird horned dinosaur that I found in Montana away, but wanted to compare it with the same bones from Princess Lumpybumps.

I am surprised at how different they are, especially the fused frill lumps (episquamodals) in overall size and proportions. Can't wait to dig more ! 🧪

Results from the #paleostream!
Dodo, Oneirosaurus, Thikarisuchus and Bakiribu

Rex, all hail the king #sciart

Does anyone have this ref? Nopcsa F (1925) Dinosaurierreste aus Siebenbürgen IV. Die Wirbelsäule von Rhabdodon und Orthomerus. Palaeontologica Hungarica 1: 273–304 Thanks!

Whooooaaaa, this is extremely neat!

And spectropolarimetry (which is the best, and what we used in my first paper too!) is at its core 💙

In a nutshell: astronomers used the polarization of light to study the shape of a supernova explosion before it interacted with surrounding material.

🔭🧪

Fossilized forelimb bones of a bird-like dinosaur.

Forelimb morphology of the early short-tailed avialan theropod Confuciusornis: academic.oup.com/zoolinnean/a... 🪶🧪 (📷Duan et al.)

Sarcosaurus femora and tibiae in a foam cradle

Assorted small pieces of Sarcosaurus

Better view of the femur

Sarcosaurus woodi, an early diverging averostran-line theropod from the Early Jurassic of Warwickshire, in the Warwickshire Museum offsite collections. #2025SVP

A new, exquisitely preserved skull of a basal neornithischian from the Morrison Fm www.youtube.com/watch?app=de...

I have potential information about the whereabouts of the stolen material from your site, can I send you a PM?

You're welcome! the problem is that it seems quite difficult to get a pdf...

'Plateosaurus' ornatus reinterpreted as one of the oldest european ornithischian. This reference seems to have gone unnoticed by most...

ojs-jh-gfn.ub.uni-stuttgart.de/index.php/ja...

M. W. Maisch, L. S. M. Maisch 2024 Neubewertung von „Plateosaurus“ ornatus von Huene, 1908 – ein früher Ornithischier (Dinosauria: Ornithischia) aus dem Rhätbonebed? Bd. 180 (2024): Jahreshefte der Gesellschaft für Naturkunde in Württemberg, 180. Jahrgang

Other Kem Kem vertebrae with a similar caudal slant

Museum Piece - Osso vertebrale fossile - Spinosaurid complete dorsal vertebra - 120 cm Museum Piece. About 120 centimeters long!!! Incredible museum grade spinosaurid complete dorsal vertebra with complete sail process. This astounding piece come from the famous cenomanian deposi...

Currently being auctioned. Agree on the centrum, seems to be the only part added... The neural spine appear genuine however www.catawiki.com/it/l/9376682...

"Oh, my God"

"What is it?"

"It's a birdcage"

"For what?"

My 3D anatomical study of a large male Pteranodon longiceps. The skeleton is a generalised composite as per usual with my models, but is scaled to UNSM 50130 (a very large and almost complete wing)

Ankylosaurian remains from a new Campanian–Maastrichtian locality in Northern Patagonia, Argentina In South America, the fossil record of thyreophorans is scarce compared with that of Laurasian landmasses. The earliest finds date back to the first half of the twentieth century and consist of an ...

Restos de anquilossauros de uma nova localidade do Campaniano-Maastrichtiano no norte da Patagônia, Argentina doi.org/10.1080/0311...

Leaving this here for no particular reason... #spinosaurus #theropoda