W. Andrew Barr

@wabarr.bsky.social

Associate Prof at George Washington University. Paleoecology and human evolution. Creator of bioanthtree.org

I am really excited to share news of this new jaw...until now Paranthropus had been conspicuously absent from the Afar. Fieldwork at Mille-Logya is not easy, and this fossil is the result of years of very hard work (and a lot of days of dry screening by our team)! www.nature.com/articles/s41...

Afar fossil shows broad distribution and versatility of Paranthropus - Nature

With its attribution to Paranthropus, a 2.6-million-year-old partial mandible expands the range of the genus into the Afar region of Ethiopia and adds to our understanding of hominin evolution in east...

nature.com

House continuing res will force DC Gov. (funded by taxes on DC residents, not fed. funds) to revert to FY24 spending levels, though we are halfway through FY25. This means DC will be forced to cut $350+ million from our public/charter school budget, leaving more than 95,000 kids high and dry.

I am deeply saddened to have learned of the death, on Feb 5, 2025, of Elisabeth Vrba—a fantastically creative scientist and a warm, wonderful human being. She leaves us a legacy of original macroevolutionary thinking that is still fresh and illuminating.

Best grant writing advice I ever received: "Write your proposal as if someone from a completely different field will search through it looking for 100 banned words"

Feeling inspired after an awesome lab meeting this morning with a great group of undergrads, Masters and PhD students in my lab. Just in case you needed a reminder that amazing things are happening in Washington DC, in addition to all the other things.

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I am very proud of my PhD student Nick Rosas for successfully defending his dissertation proposal! Lots of cool research on Middle Miocene bovids biogeography and ecology coming soon!

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The rhinos we have and the ones we lost. In the late Pleistocene, about two thirds of the worlds terrestrial megafauna went extinct. Rhinos fared better than average, but still, all the temperate and cold climate species are gone. Those that remain are endangered and in dire need of protection.

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In my paper, coauthor Bernard Wood and I explore the potential impacts of a spatially limited fossil record on understanding human evolution. We do this using two "thought experiments", focusing on the Eastern African Rift Valley. (1/4)

I was just making a map in QGIS and accidentally zoomed out on my digital elevation model base layer, and accidentally 'discovered' that Antartica has the highest average elevation of any continent! Genuinely very surprised.....no idea.

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hey geometric morphometrics folks who use the R package geomorph. When I do a gm.prcomp, does the function automatically project the points into tangent space before doing the PCA? I assume so, but I wasn't able to 100% convince myself that it does while reading the help file. Thanks!

interesting and detailed 3D morphometric study of two hominin mandibles from Baringo from Clement Zanoli at ESHE 2023. The results show they are more likely Australopitheucs, Paranthropus and Homo aff. habilis, rather than Homo aff. ergaster as previously argued.

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congrats to Stine Keibel Blom on an excellent first conference presentation: "Signatures of incomplete lineage sorting in the phenotypes of great apes at the ESHE 2023 conference in Aarhus, Denmark!

Statement from the Association of Southern African Professional Archaeologists regarding the transport of two hominin fossils aboard the recent 3rd Virgin Galactic commercial space flight.

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