Robert Mansergh @robert-mansergh

#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! ☺️

17.09.2025 19:30 — 👍 145 🔁 48 💬 2 📌 7

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!!

27.08.2025 15:20 — 👍 969 🔁 373 💬 33 📌 106

3D model of the reconstructed skeleton of Megabalaena. The posterior skull, partial mandible, left flipper, and much of the vertebral column and ribcage are preserved.

The skull and mandible of Megabalaena. The skull is quite wide, like modern right whales, and the lower jaw is very large, and must have been about three meters long. Steepness of the braincase indicates the rostrum would have been arched like modern rights and bowheads.

Bonus #whaleontology #fossilfriday: Introducing the new right whale Megabalaena sapporoensis from the upper Miocene of Japan! About 12-13 meters long - at the small end of extant right whales (Eubalaena). Described by my NZ office mate Yoshi Tanaka et al. palaeo-electronica.org/content/2025...

22.08.2025 21:20 — 👍 15 🔁 9 💬 0 📌 0

Sign the Petition Support a New Dinosaur Museum and Science Park on the Isle of Wight

The Isle of Wight is one of the most important sites for dinosaur palaeontology in Europe and it deserves a shiny new museum and science park! 🧪🦕
chng.it/567rLM8HzN

13.08.2025 17:26 — 👍 7 🔁 3 💬 0 📌 0

Why anatomy is hard to learn for students: text books give you definitions like this -
diaphysis = shaft between metaphyses
metaphysis = the part between the epiyphysis and diaphysis
epiphysis = the part between the articular surface and metaphysis

It's like a scientific riddle 😄

27.02.2025 11:57 — 👍 14 🔁 1 💬 2 📌 0

All the centrosaurs have come down to play today at the Canadian Museum of Nature!

24.02.2025 19:06 — 👍 37 🔁 6 💬 0 📌 0

Main reason I’m in Zimbabwe is to work out if this ‘Massospondylus’ material (a selection of the tons they have) is really Massospondylus or something else. Sounds dull but has implications for dating & correlating rocks in Zim with those in South Africa & dino diversity 🦖🇿🇼🦕

06.02.2025 06:42 — 👍 41 🔁 5 💬 2 📌 0

Skeletal reconstruction of UALVP 2, the most complete specimen of Stegoceras validum, after Gilmore (1924).

28.01.2025 22:01 — 👍 51 🔁 9 💬 2 📌 0

Relevant xkcd, just replace "all modern digital infrastructure" with "headline grabbing big data study" and "a project" with "taxonomic expertise"
xkcd.com/2347/

12.01.2025 16:42 — 👍 12 🔁 5 💬 0 📌 0

Book cover, with title in gold and subtitle and editor names in white. Main image is colour depiction of a Cretaceous forest floor by Anthony Hutchings, showing a psittacosaur group. At right, two individuals are having a face to face altercation of some sort. The animals are warm brown, with yellowish and orange tones on their undersides, black spots on their arms and shoulders, and long quills on the tail.

Here's the final cover we're going with on #MesozoicArtII, featuring an image by Anthony Hutchings. The book is already available for preorder online. Out September 2025, and oh boy is it a thing of beauty. #palaeoart #paleoart #books #dinosaurs

09.01.2025 10:42 — 👍 433 🔁 100 💬 10 📌 5