#FossilFriday Here are 3 beautiful Pentremites sp. Blastoids I collected from the Upper Mississippian (Lower Carboniferous, Serpukhovian) Lower Bangor Limestone in Russellville, Alabama.

Diane Acker and I at Late Ordovician Sequatchie Formation in Ringgold, Georgia. We are looking at the Ordovician-Silrurian boundary as well as collecting ichnofossils. @ichnologist.bsky.social has an excellent blog post about this. Check it out! www.georgialifetraces.com/tag/sequatch...

I wasn't expecting this! While out looking for fossils in the Chickamauga Group in Catoosa Co, Georgia, I found a trilobite cephalon fragment. Based on the insanely long genal spine and the hour glass shaped glabella, I believe it is a Cerauruid.

I am here in Catoosa County, Georgia next to the Chickamauga Group. This particular group of rocks dates back to the Middle-Late Ordovician period (~471-440 million years ago). During this time, NW Georgia was south of the equator and was covered in warm shallow epicontinental sea.

youtu.be/xGaZBfJOyAc?... Happy Halloween! 🎃👻

Welcome back to #fossilfriday No, dinosaur controversy here, Here we have a beautiful sliced Halysitid (chain) coral from the Middle Devonian Callaway Limestone (Cedar Valley Group) of Columbia, Missouri.

Now that Nanotyrannus lives, let's go down memory lane and revisit this gem. youtu.be/rxcA3kOw6IA?...

Nice "oldie but goodie" @pbs.org documentary mentioning today's dinosaur darling, Nanotyrannus, but also puts its best possible foot forward (or rather, feet) by opening with the Cretaceous dinosaur footprints near Glen Rose TX. 🧪🦖🦕🐾

Nanotyrannus lives!

New frond just dropped. Or do they flop? C. brasieri has a similar structural pattern to the enigmatic mid-Proterozoic "microbial" structures I've been documenting. But where C. brasieri forms elegant fronds, my structures are fractal sprawls. Greater complexity, but lower organisation.

Mid-Proterozoic expansion of passive margins and reduction in volcanic outgassing supported marine oxygenation and eukaryogenesis. www.sciencedirect.com/science/arti...

In my 'Evolution of the Earth' class today, we'll finish learning about the Proterozoic Eon: the end of "Snowball [or Slushy] Earth" & the first supercontinents (all hail Rodinia!), but then will jump into the Phanerozoic Eon, focusing on the ecological expansion of marine biota & environments. 🧪🪨⚒️🌊

This is the only "complete" crinoid in my collection, from holdfast to crown. It's easy to see why they are sometimes called sea lilies, even though they are animals related to starfish and sand dollars. This is Abatocrinus gallatinensis from the Mississippian Lodgepole Fm of MT. #FossilFriday

I get to dress up at work today. I'll let you guess as to who I am going as. 🦖🦕

I've never seen a brittle star swim. Stemless crinoids (Comatulids) are beautiful swimmers. Search them up if you've never seen it.

I have a very bad feeling about this...

Happy to have been interviewed for part of @lisasgardiner.bsky.social's @sciencenews.bsky.social article about my favorite bioeroding & carbonate-sand-pooping fishes, parrotfishes; also includes keen insights from Drs. Katie Cramer & Ana Molina Hernández. www.snexplores.org/article/parr... 🧪🐠🪸🏖️

Two New Dinosaur Fossils Emerge From the ‘Mummy Zone’ www.nytimes.com/2025/10/23/s...

My formative tween years were wrapped up in Jurassic Park: Operation Genesis and the Zoo Tycoon franchise. It's a life achievement, for me, ending up contributing (in a small way) to the Jurassic World Evolution, the very thing that kindled my interest in natural history.

Without a doubt, @cambriancam.bsky.social’a love of fossils, rocks, and minerals is infectious. So much history of life on earth is littered just beneath our feet. Listen to the latest Back To School series on See Jurassic Right, out now. podcasts.apple.com/us/podcast/s...

#TrilobiteTuesday Here is a tiny partially enrolled Kaskia chesterensis trilobite from the Upper Mississippian (Lower Carboniferous, Serpukhovian) Lower Bangor Limestone Formation from Russellville, Alabama. Unfortunately the head isn't there.

A #TuesdayTempestite in the El Paso group (Ordovician limestone), Franklin Mountains, west Texas: ⚒️

A true legend!

I'm working on him again... I will finish him eventually I promise... Need a more accurate puppet also next year is 100 years since P. bradleyi was officially named (no clue what month)! the annotation is me going crazy trying to decide on how far forward the filamentous feathers should come...

Wanna see something sadly ironic? I bought this bumper sticker after W. Bush's whole "weapons of mass destruction" war crimes bs came out. Now, those almost seem like the good ol' days😖 #NoKings

Hey you, yes, you! Come listen to my episode of the Jurassic Right Podcast where Steven and I catch up on all things Paleontology and Deep Time related. 🪨⚒️ 📚 ⏰

Welcome back to #fossilfriday Here is the holotype cast skull of Proceratosaurus bradleyi. It was found in the Middle Jurassic (Late Bathonian) Great Oolite Group (Forest Marble Formation) near Minchinhampton, a town in Gloucestershire, England.

Paleontologists - are these tabulate corals? ⚒️

Happy #nationalfossilday and #whalewednesday! This is Waharoa ruwhenua, a critical fossil for understanding the early evolution of baleen whales. Waharoa was discovered in 26 million year old limestone in New Zealand, and likely had both baleen AND vestigial teeth. 🧵1/

A long-necked early dinosaur from a newly discovered Upper Triassic basin in the Andes www.nature.com/articles/s41...

Happy 16th #NationalFossilDay! Fossils connect us to the lands we live on and the ecosystems we’re a part of. They show us that everything around us is here because of a 4.5 billion year story that’s still ongoing. I just think that’s magical. ☮️ ❤️ 🦕 🦣

A Carnian theropod with unexpectedly derived features during the first dinosaur radiation www.nature.com/articles/s41...

Happy National Fossil Day! And happy Birthday to my mom. The one who encouraged me to stay curious and to never give up on my dreams. ❤️ ⚒️ 🪨 🎉

The trilobites are the big draw at Mt. Orab. It's full of Flexicalymene and Isotelus. This was a nice surprise - a scolecodont jaw from a polychaete worm.

Welcome back to #fossilfriday Here is the fresh water Dastilbe elongatus. This specimen comes from the Lower Cretaceous (Aptian-Albian) Santana Formation in Serra de Araipe, Brazil. The Santana Formation is well known for its exquisite preservation of pterosaurs fossils.

Animated Scutellosaurus!! (Also Dilophosaurus, prosauropods, and dimorphodonts, but I think I've seen animations of all those before...) youtu.be/BYCjeNQvISM?...

A couple snapshots of an ancient apex predator for this #FossilFriday - presenting the fossil teeth & snout of an #Erythrosuchus africanus, the big-headed, hypercarnivorous archosauromorph from the Early-Mid #Triassic of South Africa 🇿🇦 #Paleontology #Science 🧵 1/

A #FridayFold in the Contorted Bed of the Witwatersrand Group in South Africa. ⚒️ More photos of this outcrop in this 2012 blog post: mountainbeltway.all-geo.org/2012/01/06/f...

The importance of palaeontology, Earth history, and science www.openaccessgovernment.org/the-importan...

A new long & narrow-snouted ichthyosaur illuminates a complex faunal turnover during an undersampled Early Jurassic (Pliensbachian) interval onlinelibrary.wiley.com/doi/10.1002/... #FossilFriday @morphobank.bsky.social #PapersinPalaeontology

#Geol104playlist The Triassic Reptile Radiations youtu.be/75r0nQu-hMs?...

#whalewednesday The spectacular early toothed whale Xenorophus sloanii from the Oligocene (~28 mya) of South Carolina! This is a critical transitional fossil, known from about a dozen skulls and partial skeletons. Read more about Xenorophus here on my blog: coastalpaleo.blogspot.com/2024/03/the-...

#paleoctober2025 day 9 : Protobalanus spinicoronatus ! Despite its name, this animal is a devonian mollusk, more specifically a basal polyplacophoran. You may know its current day relatives as little criters on the beaches called "chitons" (that are not slugs with shells nor crustaceans).

Some 3.8 billion year old rocks from Isua, Greenland. See alt text for details. These are from a friends collection, sadly they are not mine. #Geology