Pinned
A tool to quickly match taxon names between a dataset and a phylogenetic tree, built for folks doing phylogenetic comparative analyses: github.com/spearw/phylo...
jeffspear.bsky.social
@jeffspear.bsky.social
Postdoctoral scholar, University of Chicago, Tsegai lab | I study mammalian locomotor evolution | I approach my research using integration, biomechanics, and phylogenetic methods.
124 followers153 following98 posts
Pinned
A tool to quickly match taxon names between a dataset and a phylogenetic tree, built for folks doing phylogenetic comparative analyses: github.com/spearw/phylo...
jeffspear.bsky.social reposted
For years, 💀MorphoSource💀 has given researchers, educators, and students 🚨free access🚨 to 3D data on museum specimens from around the world. 🔆Now it is asking for some help to continue its work🔆 www.morphosource.org/donate/
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
African apes--still quite informative about the ancestral hominin anatomy, despite persistent rumors otherwise. Our new paper out now led by the talented Dr. Laura Hunter.
jeffspear.bsky.social reposted
Replying to @tetzoo.bsky.social
... (2) most things, even those considered 'well known' are vastly under-tested, even non-tested entirely. There's SO MUCH to do on the data we already have. Part of me thinks I should call this out at every opportunity, flag it as needing attention. But I can't: wordcount is always an issue.
jeffspear.bsky.social reposted
this is amazing, will be using this to teach about social construction of colors in my philosophy class #philsci moultano.wordpress.com/2026/06/19/w...
An impressive tour de force on how evolution came to be accepted by the scientific community. We often learn about great discoveries but rarely how consensus gets built. Highly recommend watching if you have... uh... four hours to spare?
Hey guys, if you like science and history check out my new video! I worked hard on it 🥺 youtu.be/SsI7M4NNpEg?...
Well dang. One more mystery in Rising Star (although I feel like I've had this in the back of my mind for some time... Was there a rumor about this floating around before?). www.sciencedirect.com/science/arti...
jeffspear.bsky.social reposted
I have three initial thoughts on this: 1) Amazing fossil! Exciting to see our knowledge of apes in Africa expand geographically 2) That is a very questionable use of ASR 3) Come on, Science, seriously no methods whatsoever in the main text!?
Check out this new Early Miocene ape, Masripithecus, from Egypt! 👀 Paper by Al-Ashqar et al.👇https://www.science.org/doi/10.1126/science.adz4102
jeffspear.bsky.social reposted
Hi all. I am very excited that after 6 years I finally got my phylogenetic comparative methods book and online exercises online. Feel free to use and share. The book is here: nhcooper123.github.io/pcm-primer/. Note that it is not finished, we had to abandon it before the sunk costs fallacy broke us
jeffspear.bsky.social reposted
This is great. It's not as in depth as the suggestions here, but at my JC in grad school we always asked two questions at the end: "What is the most valuable thing we can take from this paper?" and "What's the next step we would take related to that most valuable thing?" It was fantastic.
It's easier to tear down than build up, and in science we have a bad case of that. So: how to lead a journal club that actually finds value in what you read. scientistseessquirre... 🧪
A great question about the context of Sahelanthropus from @fossilhistory.bsky.social. Figured I'd share it and my best attempt at answering it, rather than letting it linger in replies.
...but it matters for how the fossils + findings are interpreted, of course. It’s my understanding that there’s some uncertainty around the fossils’ provenance and dating. If the dates were revised, for example, how might that change your interpretation of the evolutionary significance?
This was one of those exciting papers to write where many of the results genuinely surprised me. I'm proud of the work we did on this one, and huge thanks to Scott for leading and to all my co-authors, as well as the reviewers for important feedback! www.science.org/doi/10.1126/...
If you want to understand the war in Ukraine, watch @anderspucknielsen.dk. For the investment of watching just a few 10-15 minute videos per month, you'll understand the war better than most journalists (and far better than the US administration lol).https://www.youtube.com/watch?v=BiTNUZ2zONY
jeffspear.bsky.social reposted
This kind of simple, robust, hypothesis-driven test of our existing assumptions is so important for our ability to interpret fossils. We need more of it!
Congrats to our coauthor Joseph Won (PhD Program in Anthropology, CUNY Graduate Center) on his 1st publication. Curvature of the hand & foot proximal phalanges varies between two orangutan species consistent with differences in their substrate use (all trees vs. some ground use). 🧪
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
Paleo folks: Please recommend researchers (incl yourselves) interested in phylogenetic reconstruction in deep time, molecular clocks (discord w/ fossil clocks), foundational/methodological issues in phylo/paleo-reconstruction & who'd be interested in hanging w/ historians & philosophers of science ⚒️
Curious whether anyone knows if authors of scientific papers are members of this Class, or whether we signed that away to the publishers? Regardless, it's interesting to see which of my papers were used.
Just a reminder to check for your name in this list of books that OpenAI trained from. If your name is there, they probably owe you several thousand dollars. OpenAI cried that if everyone eligible author files, the company will go bankrupt, so I'm alerting every author I have ever spoken to.
First official postdoc paper out in @jexpbiol.bsky.social! We compare different approaches to studying kinematics in a macaque ankle and note that the talocrural joint seems to contribute minimally to dorsiflexion of the foot during stance phase. journals.biologists.com/jeb/article/...
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
Using ancestral state reconstructions to generate hypotheses about primate evolution and testing them against the fossil record. urldefense.proofpoint.com/v2/url?u=htt... This has been in the works a long time and I'm really pleased to finally have it out! Thanks to all who contributed.
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
Population wide supplementation as a public health intervention is not new and has yielded incredible health benefits through the years don't let the misguided attacks on fluoridated water fool you. Why do you think iodide is added to table salt? Since we are intent of forgetting history here is a 🧵
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
TLDR: the administration wants to remove habitat loss from the definition of "harm" for endangered species, which will effectively gut the ESA. I just commented. If you're in any way interested in ecology, nature, and the protection of endangered species, you should, too. Free daily action!
New paper on evolvability in apes, and whether it can help us make sense of the messy evolution of locomotion in that group. My results suggest a feedback effect between integration and the response to selection. We need more research on how integration evolves! link.springer.com/article/10.1...
A tool to quickly match taxon names between a dataset and a phylogenetic tree, built for folks doing phylogenetic comparative analyses: github.com/spearw/phylo...
jeffspear.bsky.social reposted
This is how I tend to think about our history, to be honest: the story of American greatness is a story of overcoming the flaws in our republic. And there are periods of retreat and backlash, but in the past, we've always renewed the quest for that more perfect union.
"I don't want a Disney vacation of our history! I don't a whitewashed history, I don't want a homogenized history. Tell me the wretched truth about America, because that speaks to our greatness" -- 20 hours into his speech, Cory Booker is spitting absolute 🔥
jeffspear.bsky.social reposted
jeffspear.bsky.social reposted
Letter to leadership of universities being targeted, to run in Chronicle tomorrow. Academic friends, pls sign if you are a US citizen and tenured (ie it’s safe for you to do so) “We Must Leverage the Strength of Our Institutions and Stand Together” Text in replies docs.google.com/forms/d/e/1F...
jeffspear.bsky.social reposted