Sign in

Casey Holliday

@crocholliday.bsky.social
890 followers 454 following 73 posts

Anatomy, morphology, evolutionary biology, developmental biology, biomechanics, paleontology, imaging, maybe crocodiles

PostsRepliesMedia
Casey Holliday @crocholliday.bsky.social · 24/08/2025
Calling Midwest Anatomists and Paleontologists! Deadlines Extended! Sept 1st for Talks and Posters! Sept 12th for registration. Look forward to seeing you here! @anatomyorg.bsky.social @paleosoc.bsky.social @societyofvertpaleo.bsky.social www.anatomy.org/.../Meetings...
087
Casey Holliday @crocholliday.bsky.social · 19/05/2025
Congratulations to Emma Cooney on graduating with a MS out of the lab. Stay tuned for some wicked cranial morphology.
050
Casey Holliday @crocholliday.bsky.social · 11/04/2025
Happy to meet new people and share our work on imaging and informatics at @bionexuskc.bsky.social in Kansas City.
030
Casey Holliday @crocholliday.bsky.social · 04/04/2025
Good times with good people at AAA this week!
040
Reposted by Casey Holliday
American Association for Anatomy @anatomyorg.bsky.social · 31/03/2025
Congratulations to our 2025 Class of Fellows! They were recognized at the Fellows reception tonight and received their AAA Fellows pin!🫀🧠 #Anatomy25 #anatomy #education #research #science #aaa #portlandoregon #scientificmeeting #annualmeeting
AAA fellows
0133
Reposted by Casey Holliday
Dr Stephan Lautenschlager @palaeostephan.bsky.social · 10/03/2025
This project has started a long time ago, but in a galaxy not too far away… Happy to share this new study with @taphonomist.bsky.social looking at the functional morphology and biomechanics of the Rancor. Warning! Nerdy sci fi, palaeo & biomechanics thread following! jgeekstudies.org/2025/03/08/i...
jgeekstudies.org
Is a bone a viable weapon when combating a Rancor? Estimating the bite force of an intergalactic mega-predator
Stephan Lautenschlager1,2 & Thomas Clements3 1School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, UK. 2The Lapworth Museum of Geology, Birmingham, UK. 3…
37129
Reposted by Casey Holliday
Andrew Iwaniuk @evoneuro.bsky.social · 20/03/2025
New paper out today! Here we examine how a simple behaviour, head scratching, has evolved in birds. There are some relatively complex changes going on that vary across clades, as demonstrated by @gallinaciega.bsky.social analyses. www.frontiersin.org/journals/eth... #birds #ornithology #evolution 🪶
A 6 panel figure from this paper. On the left are photos of a cormorant, lorikeet, kingfisher, and songbird scratching their heads with one foot. On the right are two different phylogenetic trees of avian orders with head scratching pattern (underwing or overwing) mapped on top.
0438
Casey Holliday @crocholliday.bsky.social · 19/03/2025
If you’re hanging out at the 5th Palaelontolgical Virtual Congress, and you like crocs (or even not!) visit my talk here and join the comments! www.palaeovc.org/6/great-tran...
palaeovc.org
SPOTLIGHT TALK: GREAT TRANSFORMATIONS IN CROCODYLIFORM EVOLUTION • Palaeo VC
152
Casey Holliday @crocholliday.bsky.social · 18/03/2025
Accompanying our recent paper documenting evolutionary changes in jaw muscles along the line to birds, is a collection of models on Sketchfab illustrating 3D resultant vectors of jaw muscles along with skulls and a few different ways of visualizing data like these. (www.pnas.org/doi/10.1073/...
sketchfab.com
Dinosaur Jaw Muscle Evolution - A 3D model collection by Holliday Lab (@holliday)
This collection shares 3D models of skulls and jaw muscle resultant vectors demonstrating phylogenetic changes in muscle orientation along the lines to modern birds. While temporal muscles shifted to ...
1110
Casey Holliday @crocholliday.bsky.social · 17/03/2025
Happy to share this new paper! We explored the relationships of head shape and feeding mechanics in dinosaurs. A cascade of changes from big brains, to reoriented muscles, to a breakdown of linkages resulted in avian powered kinesis, but not until neognathes. www.pnas.org/doi/10.1073/...
pnas.org
PNAS
Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...
57213
Casey Holliday @crocholliday.bsky.social · 12/03/2025
Movers and shakers in the lab: Chris, Aryan, Corrine, John, Cerise and whiteboard.
130
Reposted by Casey Holliday
Niles Eldredge @nilese.bsky.social · 12/03/2025
My Obituary of Elisabeth Vrba—out today in Nature in read-only format: rdcu.be/ediyO
rdcu.be
Elisabeth Vrba obituary: palaeontologist who solved a problem that vexed Darwin | Nature
The biologist’s theories about how environments prompt rapid species evolution and extinction propelled her onto the world stage. The biologist’s theories about how environments prompt rapid species evolution and extinction propelled her onto the world stage.
7241110
Casey Holliday @crocholliday.bsky.social · 11/03/2025
Catch my talk at #5thPVC! Thanks for the invite! Psst… it’s on croc heads.
022
Casey Holliday @crocholliday.bsky.social · 11/03/2025
Lab had a great time at the Columbia Young Scientist Expo. Constant parade of families keen on discovery.
041
Casey Holliday @crocholliday.bsky.social · 14/02/2025
Hey folks!!! Come join us at Mizzou this October for a Paleo-Themed @anatomyorg.bsky.social Regional Meeting: PALEO CONNECTED. Sponsored in part by @paleosoc.bsky.social, we're looking forward to having you all. Watch this space.
075
Casey Holliday @crocholliday.bsky.social · 07/02/2025
Who says birds don’t have teeth?
140
Casey Holliday @crocholliday.bsky.social · 05/02/2025
We’re cleaning some lab spaces to make way for impending construction. Found an entiantiornithine fossil high up on a shelf with some other skeletons. New taxon methinks.
050
Reposted by Casey Holliday
Thom Sanger @thomsanger.bsky.social · 05/02/2025
SICB is back! Please follow the society's new BlueSky account: @sicb.bsky.social SICB recognizes that the scientific enterprise is only successful because of the people performing that science. Without those people, science and all of the political and economic strength that it provides, stops.
14519
Casey Holliday @crocholliday.bsky.social · 23/01/2025
Got to see the latest Squirrel-raptor at The Field Museum. Its exquisite preparation was done by Connie Van Beek and Akiko Shinya. Here’s Connie working on a more recent bird from the Green River Fm., a similar type of slab fossil, just ~90degrees of Eocene longitude away and ~90million yrs later.
Archaeopteryx
1537
Casey Holliday @crocholliday.bsky.social · 21/01/2025
Got to visit the Field Museum Friday. Got my picture with Geology Collections Manager Bill Simpson. Bill helped get me started in this grand adventure in Paleo. I’m forever grateful to him and all the rest of the Sue prep team, who still let me hang in the lab when I show up with my own students.
1210
Reposted by Casey Holliday
Thom Sanger @thomsanger.bsky.social · 18/01/2025
I am very proud of the work that went into this new Sanger Lab publication. This paper was led by postdoc Marta Marchini and a number of my lab's undergraduate students, each of which contributed unique skills or effort to the completion of this project.
13011
Casey Holliday @crocholliday.bsky.social · 06/01/2025
Best lab photo ever
040
Casey Holliday @crocholliday.bsky.social · 18/12/2024
Getting hyped for #SICB2025. We'll have a talk and a poster on Pangolin tongues as part of the Hydrostats symposium. Get ready for a multimedia pangopalooza!
5599
Casey Holliday @crocholliday.bsky.social · 08/12/2024
Meet PhD student Chris Zobek, thanks to @nocturnetwork.bsky.social! Chris has been busy visualizing and measuring the diversity of jaw muscles in snakes. Really cool stuff. nocturnetwork.org/blog/nocturn...
080
Casey Holliday @crocholliday.bsky.social · 06/12/2024
Birds are frightening! Ichthyornis AMNH FARB 32773.
36312
Casey Holliday @crocholliday.bsky.social · 17/11/2024
Which faculty member had a party whose house featured this piece of art on the wall? A. Dentist B. Anthropologist C. Ag Sciences D. Victorian Literature E. Anatomist
6100
Casey Holliday @crocholliday.bsky.social · 14/11/2024
Check out last year's paper with Emily Lessner getting at knowing your beak nerve anatomy before trimming your parrot's beak! avmajournals.avma.org/view/journal...
120
Casey Holliday @crocholliday.bsky.social · 06/05/2024
New paper out! Some crazy folks decided to run a 3D imaging and computational biology class during Covid quarantine. Out of it came a nice little observer variation paper on how we landmark, segment and analyze 3D musculoskeletal features in CT data of Anoles. Thanks all! 🧪 doi.org/10.1093/iob/...
131
Casey Holliday @crocholliday.bsky.social · 18/03/2024
Big week coming up at the 2024 Anatomy Connected meeting in Toronto starting this weekend. Come catch a bunch of talks and posters from the lab as well as our symposium on Visualizing the Scale of Skeletal Muscles.
031
Casey Holliday @crocholliday.bsky.social · 14/02/2024
Happy Valentine's day. Have an iodine-scanned heart from a consented human donor in our GOB program. Check out all those muscle fascicles! 🧪
0101
Casey Holliday @crocholliday.bsky.social · 09/02/2024
Itty bitty teenie weenie pale yellow polkadot phytosaur chin from MNA. #Fossilfriday
051
Casey Holliday @crocholliday.bsky.social · 08/02/2024
Bluesky don't Gif?
210
Casey Holliday @crocholliday.bsky.social · 08/02/2024
There's still time to join us at NAPC 2024 in Ann Arbor. Abstracts are due Feb 15! sites.lsa.umich.edu/napc2024/pre...
010
Casey Holliday @crocholliday.bsky.social · 08/02/2024
Enjoy a sample of the animals we've been working on this week.
181
Casey Holliday @crocholliday.bsky.social · 07/12/2023
All you functional morphology and evolutionary biomechanics people! Considering going to NAPC 2024 in Ann Arbor MI this June???? Alec Wilken and I will be running an Evolutionary Biomechanics symposium! Join us! Microbes! Plants! Invertebrates! Vertebrates! Everything in between!
020
Casey Holliday @crocholliday.bsky.social · 27/11/2023
PhD student Chris Zobek ever so carefully posing a fresh, dead rattlesnake head for fixation and diceCT and later 3D muscley goodness, alongside a few other fanged friends.
030
Casey Holliday @crocholliday.bsky.social · 24/10/2023
Had a great time at SVP Cincinnati. 1st time back since 2018 in ABQ! We spoke of mandibles, kinesis, display structures, dinosaurs, crocs, and epiphyses. We schemed and celebrated. I have become an academic grandfather, congrats to Henry Tsai and his student Drew Collett. 🐊🦖🦜💪💀
010
Casey Holliday @crocholliday.bsky.social · 21/09/2023
I don’t think I have any Missouri peeps here yet but: Hey! Come to Prehistoric Pints tomorrow night at Logboat Brewery, Columbia Missouri. Chat up our local paleontologists! Catch a few talks in Cambrian reefs and T. rex mechanics! Beer!
020
Casey Holliday @crocholliday.bsky.social · 11/08/2023
Having a hard time sleeping? Catch this talk of mine at @NHMU’s Dinofest2023 about Dinosaur Jaw Muscles and Cranial Biomechanics. Thanks for having me folks! you're some of my favorite people with some of the greatest fossils! www.youtube.com/watch?v=KW7JPYsioWw…
youtube.com
DinoFest 2023: Dr. Casey Holliday
Dr. Casey Holliday presents "Inside Dinosaurs: Jaw Muscles, Feeding Function, and Skull Evolution" at the Natural History Museum of Utah's DinoFest 2023. Lea...
062
Casey Holliday @crocholliday.bsky.social · 04/07/2023
You’ll never go into social media again.
020