This is Sasha. She is my heart. #Caturday #CatsOfBluesky

Fascinating new study from @arctomet.bsky.social about how differences in parental care (or lack thereof) between Mesozoic dinosaurs and Cenozoic mammals might potentially affect interpretations of species diversity and trophic abundance in ancient communities. 🦖🧪

I didn't know that today was National Sandwich Day when I made this grilled cheese, but what the heck, it'll do. #NationalSandwichDay 🥪

The Museum of the Rockies @museumoftherockies.bsky.social is one of the premier paleontology museums in the western US, routinely producing cutting-edge science and showcasing some truly spectacular fossils. Please consider giving them a follow! 🦖🧪

Movies in a darkened room on Halloween night: "Cabin in the Woods", "Tucker and Dale vs. Evil", and "The Frighteners". Plus margaritas. 🎃 #HappyHalloween

Happy National Cat Day to all who celebrate from (clockwise from top left) Arya, Buzz, Tigger, Zorro, Boris, and Sasha! (Arya is perched on my back while Sasha is lounging in my lap in this collage, in case you were wondering.) #NationalCatDay #CatsOfBluesky

The Society of Vertebrate Paleontology (SVP) @societyofvertpaleo.bsky.social has just published their "Best Practice Guidelines for Mitigation of Adverse Impacts on Paleontological Resources" for paleontologists around the world who work to recover & conserve fossils threatened by human activities.

Jeebus, this game. #Dodgers

Boris is keeping an eye out for anything that might be happening today on #NationalBlackCatDay ... but so far, nothing much going on. Oh, well, Halloween is in the offing ... #CatsOfBluesky

Boris catching some rays while Buzz catches some Z's. #Caturday #CatsOfBluesky

Last minute #FossilFriday entry: a fossil onyx slippersnail, Crepidula onyx, from Pliocene deposits in Ventura Co. CA, found on a construction site by my paleontologist wife Kim & currently on display @ the Western Science Center in Hemet, CA as part of their new "Life in the Slow Lane" exhibit! 🧪🐌

More fossil ground sloths for #InternationalSlothDay!

Happy #InternationalSlothDay! To celebrate w/ a paleontology twist, here's a fossilized skull and lower jaw of the extinct Pleistocene (Ice Age) ground sloth Paramylodon harlani, discovered in 2018 during excavation for the LA subway's La Cienega Station. 🧪🦥 #WorldSlothDay #MylodontMonday

It may be #NoKings day today, but Tigger thinks maybe he should be accorded *some* respect, at least, if not be treated like a king himself - which means no photos while he's busy grooming. (That's my side of the bed that he's claimed, BTW.) 🐈 #Caturday #CatsOfBluesky

In honor of spooky month, share a 4-word horror story that only someone in your profession would understand. "I used Glyptal throughout."

Unsolicited sick pic

War zone in Portland.

Buzz proudly says he's UP for #Caturday! #CatsOfBluesky

Happy 120 years of Tyrannosaurus rex and Albertosaurus sarcophagus! Both of these iconic dinosaur species were named by paleontologist Henry Fairfield Osborn on this day back in 1905. (Yes, this would have been a good #FossilFriday post, but it's Saturday and I'm terribly literal.) 🦖🧪

For #FossilFriday and #SeaOtterAwarenessWeek: a fossilized right humerus (arm bone) from the sea otter Enhydra lutris, discovered during construction in Los Angeles in 2018. The fossil derives from the middle Pleistocene marine San Pedro Formation, which has been dated from 900 ka to 270 ka. 🧪🦦

For #FossilFriday: want to know what's ahead in the future of paleontology? Look no further than this new-today paper. "These questions offer a starting point ... for engaging in discussions, securing funding, advocating for museums, and fostering continued growth in shared research directions." 🦖🧪

Share your favorite black and white movie.

I'm always touched when one of somebody else's cats decides that I can be trusted. (Nice to hang out with you, Spartacus!) #Caturday #CatsOfBluesky

For #WalrusWednesday (that's a thing, right?) 🧪

My wife and I were in Canada on 9/11 & were informed by a Starbucks clerk that there had been "some sort of kamikaze attack" back home. We found a local TV & watched in horror at what was transpiring. This short video, for me, very powerfully captures that horror. youtu.be/LsGcIkevyHM?...

Over and above the genetics, this: "It is also worth noting the serious ethical concerns that are associated with any attempts to reverse extinctions. This is especially true for long-extinct species, like the dire wolf, whose natural habitats no longer exist and whose prey are also long gone." 🧪

For #MammothMonday: new article out about paleontological excavations led by @sabercatwoman.bsky.social at the famed Natural Trap Cave fossil site in northern Wyoming. Recent discoveries include remains of mammoth! 🧪 cowboystatedaily.com/2025/09/06/m...

Happy National Hummingbird Day to all who celebrate & enjoy our tiny avian dinosaur friends! (They really seem to like our yard.) #NationalHummingbirdDay #NaturePhotography #Wildlife #Hummingbirds #BirdPhotography

I would like to close the fridge door at some point, Zorro, it's warm today. #Caturday #CatsOfBluesky

If you see this, quote repost with a vampire who's not Dracula.

Post a random picture, or else everything will go bad in September.

I'm so glad I wrote all those copious notes during my meetings this morning. Thanks, Boris. #CatsOfBluesky

For #FossilFriday: the Ledi-Geraru site in the Afar Desert of Ethiopia, from which new hominin remains indicate that earliest Homo coexisted alongside a new species of Australopithecus, as reported last week in Nature. Here, scientists can be seen screening for hominin fossils in the distance. 🧪

You've been kidnapped. The characters from the last TV show you watched are trying to rescue you. Who's coming to save you?

For #FossilFriday: fossils of the ice age horse Equus scotti from the El Casco region of Riverside County, CA, US. These fossils date from 2.2 to 1.2 million years, & are under study as part of this weekend's #PaleoCon2025 conference at the Western Science Center in Hemet, CA, US. 🐎🧪

A well-written and powerful rebuttal to the misguided idea that vertebrate fossils are better treated as commodities or investments rather than as objects of significance for both science and our shared natural heritage (and by "our", I mean *everyone*). Please read. 🧪 #Paleontology #Fossils #SVP

Happy to finally see this out! New hominin fossils from the Ledi-Geraru site in the Afar Region, Ethiopia reveal that early Homo lived alongside an as-yet unnamed new species of Australopithecus between 2.78 and 2.63 million years ago. www.nature.com/articles/s41... 🧪

Tigger in the window - his favorite spot! - watching birds & stray local cats while staying comfortably out of the heat. #Caturday #CatsOfBluesky

For #FossilFriday *and* #InternationalCatDay: a 3rd lumbar vertebra of the extinct sabre-toothed cat Smilodon fatalis (LACM 8109/164092), discovered during construction in Los Angeles in 2018. Sabre-toothed cats are common from the nearby Rancho La Brea "tar pits" but are otherwise rare finds. 🐈🧪

What museums and researchers are facing is I think a microcosm of a larger trend, in the US and elsewhere: a move away from research that benefits the general public, towards profit & perceived prestige for monied individuals & interests exclusively. 🦖🧪

FYI all you SVPers & non-members, too) out there!

For #FossilFriday: the Lambert Room at the Carter County Museum in Ekalaka, Montana, US - home of the annual Dino Shindig, which returns this weekend! That's a cast skeleton of Tyrannosaurus rex ("Wyrex") in the foreground & a real Edmontosaurus skeleton & skull of Triceratops in the background. 🦖🧪

Oh, wow, do I have field & lab photos ... !

For #FossilFriday: it may not look like much, but this canid right patella is the first confirmed record of ice age dire wolves (real ones, Aenocyon dirus) from what is now Tule Springs Fossil Beds National Monument, Nevada, US. 🐺 🧪

Welcome to Bluesky, Stuart!