Gabriel A. Martínez-Ruiz

Gabriel A. Martínez-Ruiz

@gmdaspleto.bsky.social

Undergrad at the University of Puerto Rico majoring in biology and geology. Interested in vertebrate paleontology.

251 Followers 526 Following 6 Posts Joined Nov 2024
5 days ago
Post image Post image Post image Post image

Results from the Flocking #paleostream!
Megamastax, Ornitholestes, Tanyka and Eosteus

165 49 3 1
5 days ago
Post image

Latest paleoart watercolor is Daemonosaurus. Felt compelled to make this after learning Dr. Hans Sues, who described and named this dinosaur, passed. 🎨🦖

122 26 2 0
1 week ago
Post image

New paper! How weird could Permian animals get? Turns out, pretty weird. Meet the stem tetrapod Tanyka amnicola from the Pedra de Fogo Formation of northeast Brazil

royalsocietypublishing.org/rspb/article...

902 159 41 19
1 month ago
Post image

Marsh guardian

769 266 5 0
1 month ago
Post image Post image Post image Post image

Results from the #paleostream!
Borealopelta, Haolong, Moschorhinus and Sauropia

126 48 4 0
1 month ago
Rough sketch of Haolong climbing a rock

Very quick rough sketch
of the newly described spiky Hadrosauroid dinosaur Haolong dongi

I had to at least rough sketch this beauty!

#paleoart #sciart #dinosaurs

287 89 8 1
1 month ago

alt

14 7 1 0
1 month ago
Commission for Gecko Mola!

Gigantoraptor #Paleoart

Coloration based in the Brown lory, specifically individuals with blue-ish tones, thanks to @claudia-sahm.bsky.social for suggesting that!

308 78 7 0
3 months ago
Preview
“King of the Riverside”, a multi-proxy approach offers a new perspective on mosasaurs before their extinction - BMC Zoology BMC Zoology - The discovery of a mosasaurine tooth (NDGS 12217) in the Hell Creek Formation, Morton County, North Dakota, adds to the growing evidence that mosasaurs, traditionally considered...

Download the Open Access paper here:

link.springer.com/article/10.1...

14 5 2 0
3 months ago
YouTube
King of the Riverside - explainer video YouTube video by Genuine Rockstars

Fresh. Water. Mosasaur. In. The. Hell. Creek. Formation.

www.youtube.com/watch?v=tn8l...

50 22 3 0
3 months ago
Post image

Daspletosaurus wilsoni holotype skull full-size reconstruction. Went on display in our exhibit hall (Badlands Dinosaur Museum) Sept 2025. The nicest Daspletosaurus skull reconstruction I think. Casts possibly available in 2026. #dinosaurs #fossils #fossilfriday

36 12 1 1
3 months ago
3D render. Full body of a Lythronax, the dinosaur is mostly green 3D render. Full body of a Lythronax, the dinosaur is mostly green 3D render. Full body of a Lythronax, the dinosaur is mostly green 3D render. Full body of a Lythronax, the dinosaur is mostly green

A few more renders of my Lythronax 3D model. #dinosaur #art #paleoart #3dart

285 66 7 0
4 months ago
Post image

Hadrosaurine braincase. #fossilfriday. Collected by Badlands #Dinosaur Museum, Jul 2025 & cleaned by Deanna. Associated skeleton from BLM-administered US #publiclands. Dinosaur Park Formation, Montana.

You're looking up into the underside of the skull roof. The bottom of the photo is the frontals.

53 8 0 1
5 months ago
Post image Post image Post image

#ZAVACEPHALE IS FINALLY OUT! 🥳 Our first definitive Early Cretaceous pachycephalosaur! (~15 my older than the previous oldest pachycephalosaurs) And the first hand material for the clade! I can't tell y'all how much of a pleasure it was to review this paper! ☺️

147 47 2 7
5 months ago
The first description of dinosaurian eggshell from the Maastrichtian Lance Formation, Wyoming, North America - Acta Palaeontologica Polonica

The first dinosaur eggshells from the Lance Formation. As for its identity, it could come from anything from Edmontosaurus to T. rex.
www.app.pan.pl/article/item...

7 3 0 0
5 months ago
Preview
Dinosaur extinction can explain continental facies shifts at the Cretaceous-Paleogene boundary - Communications Earth & Environment Dinosaurs promoted open habitats in the Late Cretaceous, and their extinction could have led to a radical reorganization of the landscape and ecosystem structure at the beginning of the Paleogene, acc...

Out today in @commsearth.nature.com from some of my newest colleagues at UMMP: evidence that the extinction of dinosaurs led to fundamental shifts in terrestrial environments, and that this signal is recorded in facies shifts tied to the K-Pg boundary: www.nature.com/articles/s43...

90 37 1 4
5 months ago
Preview
A domed pachycephalosaur from the early Cretaceous of Mongolia - Nature The pachycephalosaurian Zavacephale rinpoche, from the Early Cretaceous of Mongolia, provides crucial insights into the early evolution of dome-headed dinosaurs, including the development of the front...

Chinzorig, T., Takasaki, R., Yoshida, J. et al. A domed pachycephalosaur from the early Cretaceous of Mongolia. Nature (2025). doi.org/10.1038/s415...

82 27 2 1
6 months ago
3D model of a mosasaurus. It’s mostly blue with a few orange markings around the eye

Mosasaurus 3D model. Sculpted in ZBrush, textured in Substance 3D Painter and rendered in Blender.
#paleoart #paleontology #3dart #mosasaurus

113 30 5 1
7 months ago
Prehistoric Planet Ice Age image showing two homotheres interacting in a snowy landscape. Prehistoric Planet Ice Age image showing two Woolly rhino, a calf and old adult. Prehistoric Planet Ice Age image showing a glyptodont. Prehistoric Planet Ice Age image showing a mother sloth climbing up a rocky surface, baby on her back.

It's true, #PrehistoricPlanet Ice Age is coming to #AppleTV for November 2025. These images show how good our animals are, but... believe me, this barely scratches the surface!! It has been a massive thrill and privilege to help bring this series together... you're in for an incredible treat.

491 157 28 34
8 months ago
Illustration of three species of aetosaurs. Top: Aetosaurus ferratus, middle: Scutarx deltatylus and bottom: Desmatosuchus spuriensis Reconstruction of two species of Aetosaurs. Top: Typothorax coccinarum. Bottom: Paratypothorax andressorum

Why is my book taking so long to finish? Well, one of many reasons are Aetosaurs! They are very complicated to reconstruct AND my book has a lot of them! 😅 But Aetosaurs are awesome!

Aetosaurs are pseudosuchians, and thus related to modern crocodilians

#paleoart #aetosaurs #art

243 51 4 1
8 months ago
A portrait of a bull Arrhinoceratops as seen in Walking with Dinosaurs 2025.

I think I'll start sharing various artwork I did during the production of WWD - I was planning on doing a portrait of each animal but never had the time. I think I maybe made 3 or 4 in the end. Here's the first one I did, Arrhinoceratops.

#sciart #paleoart

92 18 2 1
8 months ago
Portrait of Torvosaurus as seen on Walking with Dinosaurs 2025.

Another bit of personal art I did during the production of Walking with Dinosaurs - Torvosaurus.

109 20 5 2
8 months ago

0 for life sciences

5 1 0 0
9 months ago
Post image

Result from the Dinosaur Park Formation #paleostream! This formation was on the wheel from the start and I anticipated and dreaded it at the same time. As one of the most famous dinosaur bearing formations this piece offered several challenges.

221 64 8 3
8 months ago
Post image

Tomorrow, Americans

30 9 0 0
9 months ago
Preview
Osteology and histology of a Plateosaurus trossingensis (Dinosauria: Sauropodomorpha) from the Upper Triassic of Switzerland with an advanced chronic pathology - Swiss Journal of Palaeontology The sauropodomorph Plateosaurus is one of the best-known dinosaurs from Europe due to the large numbers of articulated skeletons discovered from bonebed horizons in Switzerland and Germany. Plateosaur...

🚨New paper alert! 🚨

We describe a Plateosaurus skeleton 🦕 from Frick, northern Switzerland, suffering from a VERY diseased forearm!

Open Access: sjpp.springeropen.com/articles/10.... (1/n)

49 18 2 1
9 months ago
Preview
A new Mongolian tyrannosauroid and the evolution of Eutyrannosauria - Nature A new tyrannosauroid, Khankhuuluu mongoliensis gen. et sp. nov., from lower Upper Cretaceous deposits of Mongolia provides a new perspective on eutyrannosaurian origins and evolution.

The Perle (1977) "Alectrosaurus" material is FINALLY described!!

Voris, J.T., Zelenitsky, D.K., Kobayashi, Y. et al. A new Mongolian tyrannosauroid and the evolution of Eutyrannosauria. Nature (2025). doi.org/10.1038/s415...

71 28 1 1
9 months ago
Preview
Fossilized gut contents elucidate the feeding habits of sauropod dinosaurs Poropat et al. report the first sauropod gut contents found worldwide in a specimen of Diamantinasaurus from the Cretaceous of Australia. These fully support previous hypotheses of sauropod herbivory ...

Fossilized gut contents elucidate the feeding habits of sauropod dinosaurs: Current Biology www.cell.com/current-biol...

60 14 1 1
9 months ago

King Tyrant - a book - now has a trailer - like a movie! I had no idea this was coming, hats off to @princetonupress.bsky.social for putting it together!

87 25 0 0
9 months ago
"It's... pink" says Guybrush Pthreepwood, a large pterosaur walking along a rocky trail overlooking a coastal plain and sea. The sky beyond is yellowish, but Guybrush is right: that's a super pink set of clouds. Undeterred, he walks on, continuing his quest for the Ultimate Insult. He hopes Murray the Skull is some sort of cool dinosaur skull in this universe.

Realising that #FossilFriday is sneaking away, so I'll quickly post some #paleoart of the giant #pterosaur Hatzegopteryx to avoid missing out. I painted this back in 2019 but gave it a 30-minute spruce up today to sort out some compositional and colour issues. #sciart #fossil

246 61 4 1