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Jack Stack

@jackstack.bsky.social
770 followers 687 following 1.4K posts

Trophy husband, PhD vertebrate paleontologist. Lecturer of Zoology at Bowie State University. I also write about the history of fishes: fishhistory.substack.com. He/him

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Jack Stack @jackstack.bsky.social · 1h
Who’s going to tell Jason these are all random shapes and he’s losing his mind
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Jack Stack @jackstack.bsky.social · 1h
Our age of Rome is coming to an end
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Jack Stack @jackstack.bsky.social · 29/09/2026
I’m half-dome
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Reposted by Jack Stack
Braasch Lab @ Michigan State University @fishevodevogeno.bsky.social · 28/09/2026
#fish 🐟 🐠 researchers and PIs of tomorrow! We like to sponsor you for an Ecology, Evolution and Behavior (EEB) Presidential #Postdoc Fellowship application @michiganstateu.bsky.social. Applications due Nov 1, so get in touch soom! #EndlessFishMostBeautiful www.fishevodevogeno.org Pls repost!
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Jack Stack @jackstack.bsky.social · 28/09/2026
Really cool and important paper, as an enormous part of the fossil record of fishes is isolated teeth. @elizabethsibert.bsky.social academic.oup.com/iob/advance-...
academic.oup.com
Typifying tiny teeth: A standardized coding system to quantify morphological variation in fish teeth for comparative ecological, evolutionary, and functional morphological studies
Abstract. Teeth play a crucial role in vertebrate ecology as one of the main interfaces between predators and their prey. As the most diverse vertebrates o
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Jack Stack @jackstack.bsky.social · 27/09/2026
It does what? Might have to be in my slides (if Alex is ok with it), great photo.
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Jack Stack @jackstack.bsky.social · 26/09/2026
Show idea: Young Reacher
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Jack Stack @jackstack.bsky.social · 25/09/2026
Reminds me of a fish paper draft where I was writing about the anal fin of a fish and mistyped a “u” in place of the “i”. Glad that didn’t make it to reviewers.
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Jack Stack @jackstack.bsky.social · 25/09/2026
Forbidden spaghetti
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Jack Stack @jackstack.bsky.social · 25/09/2026
Oh no
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Jack Stack @jackstack.bsky.social · 25/09/2026
The new hall is good for a lot of reasons, but mounting skeletons like this is the best. Highlights that these were living, breathing animals, and makes the exhibit extremely fun and engaging.
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Jack Stack @jackstack.bsky.social · 25/09/2026
Watching Army-Temple when I’m supposed to be editing a manuscript
static.klipy.com
Mad Men Cinema
Alt: Mad Men Cinema
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Jack Stack @jackstack.bsky.social · 24/09/2026
More arthropods
Box elder bug Paper wasp Black widow and spotted lanternfly
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Jack Stack @jackstack.bsky.social · 24/09/2026
Many spiders in outdoor lab today
Wolf spider Cellar spider
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Jack Stack @jackstack.bsky.social · 24/09/2026
Walking by the lab and seeing my students doing science (I’m so proud of them)
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Jack Stack @jackstack.bsky.social · 24/09/2026
Yeah pretty much. Jason hasn’t even seen the thing that I just proofed today…
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Jack Stack @jackstack.bsky.social · 23/09/2026
Giant murder amphibian taxonomy = instant download
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Jack Stack @jackstack.bsky.social · 23/09/2026
I should note, forgot to mention explicitly here, professional scientists that subscribe to scientific racism and the like.
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Jack Stack @jackstack.bsky.social · 23/09/2026
Students asked today why people subscribe to scientistic racism, transphobia, etc., given how many of these ideas are based on bunk science. I would be interested in people's opinions, but I told them a mix of people not being smart enough to grasp the actual science and profitability.
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Jack Stack @jackstack.bsky.social · 23/09/2026
I told my students yesterday that scientists get into blood feuds about which study organism is the best but I’ll have to tell them we also fight about which is worst.
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Jack Stack @jackstack.bsky.social · 22/09/2026
Tully monster ;)
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Jack Stack @jackstack.bsky.social · 20/09/2026
New lecture on natural selection! Please take a listen. youtu.be/h-Czz8WBIm0?...
youtu.be
Why do animals match nature, almost?
YouTube video by Paleobiology with Doctor Stack
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Jack Stack @jackstack.bsky.social · 19/09/2026
My cat at 4:21 am (it’s cuddle time)
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Jack Stack @jackstack.bsky.social · 19/09/2026
Just a harmless piece of grass. Come land and take a load off spotted lanternflies.
Chinese mantis
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Jack Stack @jackstack.bsky.social · 18/09/2026
Trying the tea I made from the type of Archaeopteryx (can't just eyeball the feathers, have to check with advanced techniques).
static.klipy.com
Burned Iroh
Alt: Uncle Iroh
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Jack Stack @jackstack.bsky.social · 18/09/2026
Should be noted that other sensory experiences with type specimens are not allowed. Although I didn't ask to taste-test the specimen for instance.
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Jack Stack @jackstack.bsky.social · 18/09/2026
Advanced imaging and statistics are great tools but create the same problem. We gravitate towards complicated solutions to simple problems, to the point that some reviewers now seem to think that basic morphological work is 'eye-balling' a specimen. Like yes I did use my eyes, as opposed to what?
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Jack Stack @jackstack.bsky.social · 15/09/2026
I used to think I had it rough doing fish phylogenetics, then I read stuff from people working on single celled organisms. Bacteria had people flat giving up in the 60's, eukaryotes don't seem to be much better. Talk about polytomies!
Eukaryote tree from Adl et al. (2013), so many polytomies
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Jack Stack @jackstack.bsky.social · 14/09/2026
How I look at the flight attendant to let them know I am awake and would like a cookie.
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Jack Stack @jackstack.bsky.social · 13/09/2026
Instead of buying a fly trap I have a cellar spider who lives in an unused corner of my house. Harmless and free pest control!
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Jack Stack @jackstack.bsky.social · 13/09/2026
Spiders and snakes are by and large harmless pest control agents who work completely for free. What a magnificent animal.
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Jack Stack @jackstack.bsky.social · 11/09/2026
Friend
Harvestman
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Jack Stack @jackstack.bsky.social · 09/09/2026
A few minutes after this I got a half hour nosebleed and had to cancel class. Truly a cursed group of animals.
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Jack Stack @jackstack.bsky.social · 09/09/2026
I asked ChatGPT to solve early actinopterygian phylogeny and my computer went up in flames.
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Jack Stack @jackstack.bsky.social · 09/09/2026
Colin Wright is a deeply evil person yes. He is also terrible at science and lacks a basic understanding of biology. I sincerely doubt the man can distinguish a spider from his own right hand.
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Jack Stack @jackstack.bsky.social · 09/09/2026
Bayesian when the uniform prior that treats fish the size of the sun and electrons as the same likelihood leads to an inconclusive result.
Admiral Trench: the algorithm has never been wrong before
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Jack Stack @jackstack.bsky.social · 09/09/2026
In the nicest possible way I hope this guy finds bugs in his food.
Guy calling me fat in the nicest possible way
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Jack Stack @jackstack.bsky.social · 09/09/2026
Bayesians talking to their prior distributions
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Jack Stack @jackstack.bsky.social · 08/09/2026
Given today’s news math researchers are going to start doing everything by hand again and locking their notebooks up in cabinets blessed by the pope.
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Jack Stack @jackstack.bsky.social · 08/09/2026
Western Michigan is a great educational institution and football program, they deserve fair treatment under the clearly stated rules of replay. Glad they are standing up for themselves. getsomemaction.com/news/2026/9/...
getsomemaction.com
Official Statement Regarding Western Michigan - Michigan Football Game
Official Statement Regarding Western Michigan - Michigan Football Game
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Jack Stack @jackstack.bsky.social · 08/09/2026
This hits too close to home
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Jack Stack @jackstack.bsky.social · 08/09/2026
In an effort to get more steps I have combined two hobbies: walking and coin collecting. You’d be surprised how many coins are just laying around in parking lots. However, the issue is now trying to explain why I’m wandering around the parking lots at work…just trying to be healthier!
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Jack Stack @jackstack.bsky.social · 07/09/2026
Communication skills!
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Jack Stack @jackstack.bsky.social · 06/09/2026
Couldn’t agree more. The skill that will last any student the longest is being able to solve problems and adapt to new information. We must also remember that billion dollar industries exist to prey on people without critical thinking skills.
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Jack Stack @jackstack.bsky.social · 06/09/2026
Expanding my library for vet med students. Excited to expand my anatomy knowledge, which outside of the lateral part obscure Paleozoic fishes isn’t that great.
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Jack Stack @jackstack.bsky.social · 06/09/2026
This is the only reconstruction I will recognize from now on
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Jack Stack @jackstack.bsky.social · 06/09/2026
After last night’s result I’m happy to announce that a second is now 9,192,631,771 periods of radiation corresponding to the transition between two hyperfine levels of the ground state of a cesium-133 atom, rather than the original 9,192,631,770. Update your clocks accordingly.
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Jack Stack @jackstack.bsky.social · 06/09/2026
Researchers at the University of Michigan have determined that a minute is actually composed of 61 seconds. Amazing stuff.
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Jack Stack @jackstack.bsky.social · 06/09/2026
To no one’s surprise Michigan gets an assist from their twelfth man to beat Western.
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Reposted by Jack Stack
Riley Black 🏳️‍⚧️ 🦕 @restingdinoface.bsky.social · 03/09/2026
You should pre-order Tyrant Lizard Queen.
us.macmillan.com
Tyrant Lizard Queen
From the author of the beloved The Last Days of the Dinosaurs, an imaginative celebration of T. rex from hatching to adulthoodTyrannosaurus rex is a prehisto...
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