the paper authored by ibirucu et al. can be found here www.nature.com/articles/s41...

a warm welcome to joaquinraptor casali, a megaraptorid from maastrichtian patagonia 🦖 several features of the animal's anatomy suggest that megaraptorans retained robust arms and gracile skulls even at large body sizes, contrasting other massive theropods (art by andrew mcafee)

For the @nytimes.com, I wrote about Joaquinraptor, a new species from a very cool family of dinosaurs: long-armed, hook clawed (possible) tyrannosaur relatives from South America

Welcome back to #trilobitetuesday Here is another specimen of the trilobite Elrathia antiqauta. This comes from the Middle Cambrian (Drumian) Conasauga Formation in Floyd Co, Georgia.

#FossilFriday Here is the tooth from the large extinct lungfish Ceratodus. This genus lived from the Early Triassic all the way up to the Eocene and is found in many places around the world. This tooth comes from the Late Cretaceous Tegana Formation in Taouz, Morocco.

Paleoenvironmental evolution and sequence stratigraphic reconstruction during the Late Cretaceous in southern Egypt: Implications for palynological and geochemical proxy data www.sciencedirect.com/science/arti...

#FossilFriday A succession (anagenetic?) of Two Medicine Formation centrosaurines from @museumoftherockies.bsky.social: Stellasaurus, Einiosaurus, Achelousaurus

Come one come all! Our new #BINHM exhibit is up at the #AMNH! @blackinnhms.bsky.social www.amnh.org/exhibitions/...

One of the samples that I was working on today, a hefty slab of "Duke Stone" metaignimbrite from the Piedmont of North Carolina. This is the rock that was used to build the Gothic architecture of Duke University. Made in a pre-Appalachian volcanic eruption, it got squeezed as Pangaea was assembled.⚒️

A beryl the size of a barrel! At the offices of Virginia Energy today. ⚒️

For #FossilFriday, one of the oldest known animal trace fossils interpreted from the geologic record (~565 million years old) preserved as a tiny trail on a bedding plane at Mistaken Point, NewFoundland (Canada), investigated during a 2012 visit by our hero, Paleontologist Barbie. 🧪🐾🪨⚒️

It's always fun when you can put out some new skulls in the exhibit hall! Taxa were chosen based on materials collected in western Colorado, housed at Museums of Western Colorado and BYU. Skulls were fabricated by Gaston Design Inc and Triebold Paleontology Inc.

#FossilFriday How Do Fossils Form? www.youtube.com/watch?v=Qp1p...

Meet Zavacephale rinpoche, a new pachycephalosaur from the early Cretaceous of Mongolia 🧪⚒️ wp.me/p3ihHu-5mS

Welcome to the United Kingdom! 🇬🇧 Never before in U.S. History has a President been acknowledged by another country in this unique way! 🇺🇸 At Windsor Castle, in London & all across the land, people are United! ✊ They all want to see the #EPSTEIN_PedoFiles, ASAP! 👀

Contact between porphyritic rhyolite and Dalradian schist near Cushendun, Northern Ireland. Students: Did the rhyolite intrude before or after metamorphism under differential stress? Explain. ⚒️

*Gorgeous* geopetal cavity fills in these archaeocyathids (cone-shaped Cambrian sponges) from Australia: Source is Jago, eta l. (2020): www.researchgate.net/figure/Archa... Scale bar is 1 cm. ⚒️

Bumastoides is a trilobite that really looks like a roly-poly bug. It doesn't have the distinct 3 lobes of a tri-lobe-ite. This is Ordovician aged from the Bobcaygeon Fm. of Ontario. The eyes are also very small, but they are there. #TrilobiteTuesday

Here is a beautifully rolled up Morocops sp. trilobite from the Lower Devonian (Emsian) Hamar Laghdad Formation from Alnif, Morocco.

This is a juvenile Pseudogygites trilobite from the Ordovician Lindsay Fm. of Ontario. It's about 17 mm long. Some specimens reached 60-70 mm in length. #TrilobiteTuesday

Back in October of 2023 I found this plate of Ectenocrinus simplex crinoids while out fossil collecting in the Upper Ordovician Kope Formation (Lower Cincinnatian Series) I knew it had to be a good specimen. I had sent it off to my buddy David Clark it worked on. Here is the beautiful result.

Virginia's state fossil is 𝘊𝘩𝘦𝘴𝘢𝘱𝘦𝘤𝘵𝘦𝘯 𝘫𝘦𝘧𝘧𝘦𝘳𝘴𝘰𝘯𝘪𝘶𝘴, a Pliocene scallop from the commonwealth's Coastal Plain (specifically the Yorktown Formation): viewer.gigamacro.com/view/q4LTZGO... ⚒️

Behold! The skull of Menisco-"WEEEEE!!"-sus Cast made by Triebold Paleo.

Got locked out of my account. I'm officially back.

Is this real? What the fuck is this shit???

Why is Putin speaking through the United States president?

Fractofusus (Ediacaran fossils), Mistaken Point, Newfoundland. ⚒️

#mineralmonday Here are beautiful jelly purple Fluorite crystals on Dolostone from the famous Elmwood Mine in Smith County, Tennessee. Fluorite from this locality is often associated with beautiful large dog tooth Calcite crystals as well formed Sphalerite and Galena crystals.

Welcome back to #fossilfriday Here are the boney plates from a Placoderm fish. These come from the Middle Devonian (Givetian) Silica Shale Formation in Sylvania, Ohio. I am unsure as to what genus and species of the fish plates belong to. -Image is from Wikipedia Commons

A Simple Guide to Spotting Pseudoscience | Psychology Today www.psychologytoday.com/us/blog/crit...

Pretty sweet hand sample of folded migmatite (3D model) sketchfab.com/3d-models/ti... ⚒️

Wow that Bonnerichthys fin ended up being a lot longer than I was expecting.

For #TrilobiteTuesday, a public artwork on trilobite traces, showing how the same trilobite tracemaker could've made different trace forms (= ichnogenera) from different behaviors & interactions with sediments; at Penha Garcia Ichnological Park at Naturtejo, UNESCO Global Geopark, Portugal. 🧪🐾🪨⚒️

@ichnologist.bsky.social saw these and thought of you. Local early Devonian laminated marls with abundant trace #fossils both cross section and bedding plane view #geology #paleontology

#whalewednesday New paper - introducing the new toothed baleen whale from down under, Janjucetus dullardi - a 26 myo juvenile specimen closely related to the more completely preserved Janjucetus hunderi, published yesterday by @inxcetus.bsky.social. Read it here: academic.oup.com/zoolinnean/a...

One week from today (Aug. 20) I'm giving a talk in the Earth Sciences Colloquium @denvermuseumns.bsky.social, titled "On Frozen Ground Down Under: Polar Dinosaurs, Insects, and Other Cretaceous Fossils of Australia." Check it out if you're in the Denver CO area. sites.google.com/view/dmns-ea... 🧪🪨⚒️🐾

Cool faulted shale specimen (3D model): skfb.ly/6GuOz ⚒️

Antiarch placoderm Asterolepis from Red Hill (NV rather than PA) on display at the University of Kansas Natural History Museum.

Welcome back to #trilobitetuesday Here is enrolled Isotelus simplex trilobite from the Upper Ordovician (Sandbian-Katian) Platteville Formation from Lancaster, Wisconsin.

Saturday, I was in Twiggs County, Georgia looking for fossils with the Paleontology Association of Georgia group. I found 2 pieces of partial sea urchin fossils and a few pieces of fossiliferous limestone. I also took a few photos of outcrops that had good cross bedding.

I'm not sure the last time I shared a brachiopod. This is a Devonian Mucrospirifer brachiopod from the Silica Shale of Ohio. Brachiopods are kinda similar to bivalves (like clams), but the shells are not symmetrical. The concave ridge in the center is convex on the back side. #FossilFriday

Welcome back to #FossilFriday Here are Halysitid tabulate corals. They come from the Lower Silurian (Rhuddanian) Becsie Formation from Anticosti Island in Quebec, Canada. These corals came from an old collection. -Art by FossilLady 2011

Speaking on the fossil rich rocks of Cincinnatian Series. Thanks to Morrison Nolan for the photos.

I had an awesome time talking about the Cincinnatian Series and my attendance to the Society of Vertebrate Paleontology conference. There was a big turn out!

I get to talk about the GOBE (Great Ordovician Bioiversification Event) tonight. 🐚 🌊 🪸 🌎

#fossilfriday Here is the well preserved sea urchin Coenolectypus planatus from the Lower Cretaceous (Albian) Glen Rose Formation from McLennon County, Texas.

🚨New paper alert: check out our study on a tantalizing new Cretaceous fossil site in Bulgaria! Dinosaurs, crocodiles, giant pterosaurs, turtles & more, living on an island more than 80 million years ago when temperatures were fierce and seas high! link.springer.com/article/10.1...