Dr. Jaimi Gray
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jaimiagray.bsky.social
Dr. Jaimi Gray
@jaimiagray.bsky.social
1.8K followers 1.8K following 190 posts
Aussie Research Scientist at UTCT (UT Austin) | CT scanning | diceCT | morphology | evolution | she/her

graysvertebrateanatomy.com
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jaimiagray.bsky.social
Dr. Jaimi Gray @jaimiagray.bsky.social · Jan 29
We CT scanned thousands of vertebrates from US natural history collections and made them freely available. Countless people have used the data for research (>200 pubs) and to learn anatomy/morphology.

www.morphosource.org/projects/000...
A banner image showing CT scans of a collection of 3D rendering of the skeletons and soft tissue of different vertebrates, including amphibians, reptiles, birds, mammals, and fish
Reposted by Dr. Jaimi Gray
aaronhgriffing.bsky.social
New paper out in @devdynamics.bsky.social on lizard lung development!

Project co-led w/ Kaleb Hill and also w/ @tonygamble.bsky.social @shylonatasha.bsky.social @aussiebiologist.bsky.social @bezbez.bsky.social @celestemnelson.bsky.social

anatomypubs.onlinelibrary.wiley.com/doi/10.1002/...
brightfield images of three lizard embryos of approximately the same developmental stage. Below each embryo image is an immunofluorescence image labeling E-cadherin (green) and alpha-smooth muscle actin (magenta) of their developing lungs
November 14, 2025 at 5:35 PM
jaimiagray.bsky.social
youtu.be/Q3OePjtZgsI
Quick guide to exploring CT scans on MorphoSource
YouTube video by Gray's Vertebrate Anatomy
youtu.be
November 10, 2025 at 5:41 PM
jaimiagray.bsky.social
Excited to be a co-author on this one in @currentbiology.bsky.social! @tillramm.bsky.social did a fantastic job bringing it all together. A mountain dragon was the *very first* CT scan I ever worked on as an undergraduate, so it holds a special place in my ❤️
October 29, 2025 at 3:32 PM
jaimiagray.bsky.social
When you visit Friday Harbor Labs, @fishguy.bsky.social always has cool fish to discuss 🐟 Last week we pondered the horned searobin (Bellator militaris), & what its spines could be for. CT scan available on MorphoSource for you to explore
www.morphosource.org/media/000027546
Images made in 3D Slicer
Colored rendering of a CT scan of Bellator militaris, in anterior and anterolateral view Colored rendering of a CT scan of Bellator militaris, in dorsal, left lateral, and ventral views
October 13, 2025 at 5:41 PM
Reposted by Dr. Jaimi Gray
fishguy.bsky.social
Just wrapped up a week of SlicerMorph/MorphoDepot/MorphoCloud work with @jaimiagray.bsky.social, @cmdonatelli.bsky.social and a great team of folks.

This is Enophrys taurina with a damaged preopercular spine. Fighting or defense?
🧪🐡
Enophrys taurina CT scan. Enophrys taurina CT scan
October 11, 2025 at 10:25 PM
jaimiagray.bsky.social
"What makes us human, I think, is an ability to ask questions, a consequence of our sophisticated spoken language" - J. Goodall.

This #oVertTCN chimpanzee CT scan is available for exploration on MorphoSource: www.morphosource.org/concern/medi...
3D rendering of a whole body CT scan of a chimpanzee, showing the skeleton with a density map where yellow = most dense material, blue = medium density material, purple = low density material. Top shows 3 images of the whole body rendered in a series rotating from front to back. Bottom shows a close up of the head and shoulders. The "oVert" symbol is in the top right corner. In the bottom left corner it reads "Pan troglodytes; YPM:VZ:015959; MorphoSource ID: 0000058004"
October 3, 2025 at 3:14 PM
jaimiagray.bsky.social
Meet the newest species of Brazilian flea-toad 🐸 Brachycephalus nanicus! 🐸

B. nanicus is <1cm long & dwells under the leaf litter in the cloud forests of Serro do Mar, southeastern Brazil

I CT scanned this specimen for the osteological description

Out today in Zootaxa: mapress.com/zt/article/v...
3D rendering of a CT scan of Brachycephalus nanicus, with the skeleton rendered in light brown and skin rendered in transparent purple. Top = dorsal view, bottom = ventral view. In the bottom right corner there is an image of the frog (a small brown frog) sitting on a coin. 3D renderings of the skeleton of Brachycephalus nanicus, rendered in light brown. Top left = whole skeleton in dorsal (left) and ventral (right) views. Top right = skull in dorsal (left), ventral (middle), and right lateral (right) views. Bottom from left to right, 3D renderings of the hand, foot, spinal column, and should girdle (top) / pelvic girdle (right lateral).
September 9, 2025 at 5:28 PM
jaimiagray.bsky.social
Hey folks out there who ❤️ to #CTscan things and ❤️ museums! the @amnh.org is hiring a Laboratory Manager for their Microscopy and Imaging Facility, a.k.a. the CT lab 🧪

careers.amnh.org/postings/4550
Laboratory Manager
The American Museum of Natural History is one of the world’s preeminent scientific and cultural institutions, and has as its mission to discover, interpret and disseminate information about human cult...
careers.amnh.org
August 26, 2025 at 8:02 PM
jaimiagray.bsky.social
Hey it's #WorldLizardDay 🦎
Here's one of my faves & one I saw *a lot* of growing up in rural Australia. Tiliqua rugosa has many common names, but where I'm from we call them "sleepy lizard" or "stumpy tail".

Download the #oVertTCN CT scan from MorphoSource here: www.morphosource.org/concern/medi...
A 3D rendering of a CT scan of Tiliqua rugosa, facing the front (top) and facing the back (bottom), rendered in yellow (most dense parts), pink (medium density parts), and blue (least dense parts). A 3D rendering of a CT scan of the head Tiliqua rugosa, in dorsal view (top) and ventral view (bottom), rendered in yellow (most dense parts), pink (medium density parts), and blue (least dense parts).
August 14, 2025 at 5:08 PM
jaimiagray.bsky.social
Climbing into my #ColorsOfSkullAnatomy collection: a veiled chameleon (Chamaeleo calyptratus) 🦎 this large male was getting up there in age when he was collected, as shown by his worn down teeth and bone pathologies.

Find the model here:
www.graysvertebrateanatomy.com/veiled-chame...
Image of a 3D model of a veiled chameleon skull, with bones colored to demonstrate skull anatomy, on a black background. Model is shown in lateral (top), antero-lateral (middle), and anterior (bottom) views. A small image of the whole museum specimen is shown with a scale bar in the bottom right corner.
August 11, 2025 at 7:13 PM
jaimiagray.bsky.social
Say hello to Florida's newest established species, Typhlonectes natans - the Rio Cauca Caecilian! You can read about their relative abundance, distribution, & natural history, in our brand new paper:

journals.ku.edu/reptilesanda...

Here is one individual I CT scanned that had 7 babies inside!
A 3d rendering of a CT scan of a Rio Cauca caecilian with transparent body and bone colored skeleton, showing 7 baby caecilians inside, each rendered in a different color - counter-clockwise from tail to head - red, orange, yellow, green, light blue, dark blue, purple.
July 26, 2025 at 11:12 PM
jaimiagray.bsky.social
It's #WorldSnakeDay so here is a green tree python I CT scanned for #oVertTCN 🐍

Get the datasets (both #diceCT and regular CT) on MorphoSource: www.morphosource.org/concern/biol...

💚💚💚
3D rendering of a diceCT scan of a coiled green tree python, rendered in bright green. Slightly overlapping is a 3D rendering of the python's skeleton, rendered in a light brown color.
July 16, 2025 at 9:04 PM
Reposted by Dr. Jaimi Gray
mtanichthys.bsky.social
Now Jaimi Gray is up! "The Diffusion Diaries: Using diffusible iodine-bases contrast-enhanced Computed Tomography for High-throughout imaging of 3D anatomy of natural history specimens" #JMIH25 #ASIHin3D
The Diffusion Diaries: Using diffusible iodine-bases contrast-enhanced Computed Tomography for High-throughout imaging of 3D anatomy of natural history specimens
July 12, 2025 at 3:34 PM
jaimiagray.bsky.social
Catch me at 10.30am in the Science in 3D #ASIHin3D symposium at #JMIH25 today! Amphibians 🐸 Reptiles 🦎 CT scanning ☢️ Iodine 🧪 Anatomy 🧠
Display slide that reads "Joint meeting of Ichthyologists and Herpetologists Saturday July 12, 2025 / 10.30am - 10.45 Session with big attendance '28.1 | the Diffusion Diaries: using Diffusible Iodine-Based Contrast-Enhanced...' Jaimi Gray"
July 12, 2025 at 1:42 PM
jaimiagray.bsky.social
#ASIHin3D begins! An absolute banger line up of speakers today (including me @ 10.30). LET'S GO 🥳 #JMIH25
Picture of a powerpoint slide that reads "Science in 3D"
July 12, 2025 at 1:32 PM
jaimiagray.bsky.social
"Early bird gets the sperm" direct quote by @drscanley.bsky.social during Katherine Greenwald's amazing keynote on unisexual salamanders... And so #JMIH25 begins
July 10, 2025 at 2:41 PM
jaimiagray.bsky.social
Alert for those also arriving to St Paul for #JMIH25 on very little sleep and are also into sharks (I think there's a few of you 😉), the Lost Fox has a very strong coffee option called the "Hammerhead".... 🦈
July 9, 2025 at 4:54 PM
jaimiagray.bsky.social
En route to the Twin Cities MN for #JMIH2025 ✈️ I'm bringing plenty of stickers for y'all so you have an excuse to hit me up and talk fish and herps 🐟🐢🐠🐡🐸🦎🐍🐊

Catch my talk in the #ASIHin3D symposium on Saturday...
A coffee cup sitting on a table at an airport. Next to the coffee cup lies a pile of colorful stickers showcasing 3D renderings of CT scans
July 9, 2025 at 10:16 AM
jaimiagray.bsky.social
I used my 3D printer to create educational anatomical models of the brains of fish, frog, & lizard 🐟🐸🦎 The (color-blind friendly) colors demonstrate anatomical regions, and the 🧠 are many times larger than their real size. They can be removed from their stands for closer examination/comparison 🧪
Top: black and white 3D rendering of a dusky basslet fish Bottom left: purple/pink 3D rendering of the brain of the fish, with a scale bar representing 0.5 mm Bottom right: A photograph of a 3D printed and painted anatomical model of the fish brain on a white stand, with colors demonstrating anatomical regions. Top: black and white 3D rendering of a midwife toad Bottom left: purple/pink 3D rendering of the brain of the frog, with a scale bar representing 1 mm Bottom right: A photograph of a 3D printed and painted anatomical model of the frog brain on a white stand, with colors demonstrating anatomical regions. Top: black and white 3D rendering of a plated lizard Bottom left: purple/pink 3D rendering of the brain of the lizard, with a scale bar representing 3 mm Bottom right: A photograph of a 3D printed and painted anatomical model of the lizard brain on a white stand, with colors demonstrating anatomical regions.
June 26, 2025 at 3:56 PM
jaimiagray.bsky.social
Who are those sweet slippery noodles with tiny eyes? Caecilians of course! 🥰 I imaged these limbless amphibs for #oVertTCN using #diceCT to enhance the contrast of the soft tissues. You can find the datasets on MorphoSource with the other diceCT amphibians: www.morphosource.org/projects/000... 🧪
Seven 3D renderings of caecilians (limbless amphibians) arranged on a balck background. Each is rendered in a different color, from left to right and top to bottom: red, teal, electric blue, purple, green, orange, yellow.
June 20, 2025 at 2:26 PM
jaimiagray.bsky.social
Can we just take a moment to appreciate turtle skeletons? 🐢🦴🤯 The original model of this gopher tortoise skeleton on Sketchfab (skfb.ly/ooVZS) is a crowd favorite & I've received requests for a downloadable version lately, so I uploaded a new one to MorphoSource: www.morphosource.org/concern/medi...
image with black background, showing a colored 3D model of a gopher tortoise with bisected shell and transparent right side, revealing the skeleton inside. Shown in anterior (top), anterolateral (middle), and right lateral (bottom) views. An image of the museum specimen on a white background, with scale bar, is shown in the top left corner.
June 13, 2025 at 3:51 PM
jaimiagray.bsky.social
Glad to see Vera et al. lead the way for 3D data sharing in Aus. I hope that Ozboneviz 🦴 shows great things that can happen when you share 3D data FAIR-ly. After working on oVert & seeing it be an amazing thing for US collections, it's somewhat poetic that this paper comes from my home state of SA 🥰
June 12, 2025 at 1:28 PM
Reposted by Dr. Jaimi Gray
weisbeckerbblab.bsky.social
The result of three years’ worth of travel through Australia’s museum collections and three Universities, and heaps of help from the MorphoSource and oVert Teams @jaimiagray.bsky.social :
June 10, 2025 at 11:38 PM
jaimiagray.bsky.social
Decided there's not enough lizards in the #ColorsOfSkullAnatomy collection 🦎 So, new to the gang: Phyllurus platurus (southern leaf tail gecko). An Aussie lizard of course, and one of the 1st specimens I scanned at Florida Museum in 2021
www.graysvertebrateanatomy.com/leaftail-gecko-skull-anatomy/
On the left of the image are three different views of a 3D model of the skull of a leaf tail gecko (Phyllurus platurus), with all bones isolated and colored to demonstrate skull anatomy, from top to bottom, anterolateral view, dorsal view, and anterior view. On the right side of the image is a 3D rendering of a contrast enhanced CT scan of the whole body of the specimen, rendered in purple.
June 10, 2025 at 6:16 PM
jaimiagray.bsky.social
Had a marvelous time teaching our UTCT bio/paleo short course this week! 3D Slicer and dragonfly, with a hint of Blender and diceCT... Participants are now equipped to go forth and render/segment/measure/analyze their CT data 🤓
The computer lab at UTCT, with large monitors showing CT data being processed by students. Dave Edey sits at a PC at the front of the room, demonstrating how to use the Dragonfly CT processing software.
June 6, 2025 at 9:55 PM