Celebrating the holidays Riverside-style. #HappyHolidays #FestivalOfLights

You will be visited by three spirits ...

Happy Solstice, everyone! #WinterSolstice2025 ❄️🌨️☃️

Sasha enjoying the morning sunlight in our window. #Caturday #CatsOfBluesky

For #FossilFriday: a skeleton of an American mastodon on display, Natural History Museum, London, UK. This particular skeleton, originally discovered in Missouri, US in 1840, was later "augmented" with additional vertebrae and ribs & named "Missourium" to distinguish it from standard mastodons. 🧪

Coming up this morning!

Boris and Sasha keeping warm - and keeping *me* warm - through the cold winter evening. (That's southern California "cold", it's actually only in the mid 60s. But I'll take the cuddles.) #Caturday #CatsOfBluesky

#OTD in 1859, Charles Darwin published his landmark work, "On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life". Our understanding of life and living things has never been the same since. #Darwin #Evolution #OriginOfSpecies 🧪

Can't wait to see this! Looks amazing! #Dinosaurs #Fossils #Paleontology 🦖🧪

I'm home from a few weeks of travel overseas & the kitties like Boris here all seem very happy to see me ... but my sinuses are forcibly reminding me that I actually do have a minor allergy to cats. Gonna take a bit to re-acclimate. Still, let the snuggles commence! #Caturday #CatsOfBluesky

For #FossilFriday: one of the very first fossils of the American mastodon ever discovered. This specimen was found at Big Bone Lick, KY, US, in 1739 by a French military expedition, then sent back to Paris for study. On display at the Galerie de Paléontologie et d’Anatomie comparée in Paris. 🧪

The Society of Vertebrate Paleontology is looking for new members for the Communications Committee - and in this age of miscommunication and misinformation, committees like this one are more needed than ever. #2025SVP

The best advice I received back when I gave my first presentation was, "This is your study and you know this subject better than anyone else who might be listening. Relax." It helped. #2025SVP

Pomegranates in our yard. #LazySunday

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.