Robert Brocklehurst
@docrobbrock.bsky.social
250 followers 300 following 6 posts
Postdoctoral researcher at UML | Vertebrate evolution | Form and function | he/ him
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Reposted by Robert Brocklehurst
Reposted by Robert Brocklehurst
elsa-panciroli.bsky.social
Great new paper just dropped! A really comprehensive look at how mammals and their ancestors moved from sprawling to upright stances... but not in the straightforward way you might think! Congratulations to all the authors! 🎉
docrobbrock.bsky.social
My coauthor, Mags Mercado, is a very talented artist (and scientist!) 🎨🔬
docrobbrock.bsky.social
This work would not be possible without a long list of collaborators, collection staff and colleagues. Extremely grateful to my coauthors (including a former student who made vital contributions).

You can see a lovely write-up of the paper here news.harvard.edu/gazette/stor...
Head over heels: How mammals stood up and took over the world
For more than a century, scientists have puzzled over a fundamental mystery in our evolutionary history: how did mammals go from sprawling like lizards to striding like cats and dogs?…
news.harvard.edu
docrobbrock.bsky.social
Contrary to older ideas that posture evolved in a stepwise manner, we found that the ancestors of mammals navigated a complex evolutionary adaptive landscape, evolving, radiating and diversifying in their own unique ways.
An artistic rendering of the theoretical "adaptive landscape" of posture evolution in mammals. Different taxa occupy distinct adaptive peaks associated with different postures (green - yellow = sprawling, orange = upright). Image credit to Magdalen Mercado.
docrobbrock.bsky.social
We compiled a huge dataset of limb bones from living and extinct animals (>200 species) and analysed what they look like, how they functioned and how this all changed through 300 million years of evolutionary time.
A phylogeny of living and extinct tetrapods, showing the inferred evolution of forelimb posture in reptiles, salamanders, and mammals and their ancestors (green to yellow = sprawling, orange = upright). Illustrated with representative humeri (upper arm bones) from the study. Full figure and caption in the paper https://journals.plos.org/plosbiology/article?id=10.1371/journal.pbio.3003188
Reposted by Robert Brocklehurst
plosbiology.org
How did our mammalian #posture arise from our sprawling #synapsid ancestors? @docrobbrock.bsky.social &co reveal #parasagittal postures in stem therians, implying that synapsids evolved & radiated with distinct forelimb trait combinations for most of their history @plosbiology.org 🧪 plos.io/4loAHoy
Left: Phylogeny of tetrapods showing the evolution of posture from sprawling (green, yellow) to upright or parasagittal (orange), illustrated with humeri of select living and fossil species to show changes in morphology over time. Image credit Robert Brocklehurst. Right: The adaptive landscape of posture evolution in mammals and their ancestors. Living and fossil species with sprawling vs upright postures occupy different adaptive peaks. Image credit Magdalen Mercado.
Reposted by Robert Brocklehurst
joshlukedavis.com
Oh look! Me and @nhcooper123.bsky.social have done a podcast!

For each episode we scour the @nhm-london.bsky.social's collections for weird and fun specimens that fit the theme, and then ramble to each other about them.

So if that's your bag, give it a listen! 🎉
Reposted by Robert Brocklehurst
elsa-panciroli.bsky.social
Announcing The first found, and most complete, #dinosaur skeleton from the Middle #Jurassic of Scotland! 📢🦖 So delighted to finally be able to share this great new fossil, published today! It was actually the first dinosaur found in #Scotland... thread 🧵 #OpenAccess #fossils doi.org/10.1017/S175...
A white woman with dark blonde hair and glasses leans over a large piece of rock with black fossils embedded in the surface.
Reposted by Robert Brocklehurst
maijakarala.bsky.social
The Elgol Dinosaur is out!

This is the first and most complete dinosaur skeleton from the Jurassic of Isle of Skye, Scotland. I got to work with the amazing @elsa-panciroli.bsky.social on bringing this early ornithischian back to life. #Sciart

Link to paper: www.cambridge.org/core/journal...
Colourful digital illustration of a misty lagoon landscape in evening sun, during the middle Jurassic period. In the middle ground, there is a smallish ornithischian dinosaur standing in shallow water and lookind around. The dinosaur is purplish grey with green and creamy white patterns. On the foreground, there are rocks covered in mosses, ferns and fungi, with a small lizard hiding among the vegetation. On a tree branch above, a small mammal (Krusatodon) yawns. The background has more mossy rocks and gnarly trees partially obscured by mist, as well as a turtle and a salamander.
Reposted by Robert Brocklehurst
graemetlloyd.bsky.social
New research led by Spencer Hellert tests the idea that major radiations within synapsids are begun by small faunivores.

Paper: www.nature.com/articles/s41...
Press release: www.eurekalert.org/news-release...
Reposted by Robert Brocklehurst
anatrecord.bsky.social
Exciting pair of muscle evolution companion papers just out! Bishop & Pierce describe the fossil record of appendicular muscle evolution in Synapsida on the line to mammals in forelimb & hindlimb
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...