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Reposted by Utah Friends of Paleontology

Danny Anduza @paleontologizing.bsky.social · 31/07/2026

Happy #FossilFriday! Here's just a handful of the jackets we've pulled out of our bonebed over the past couple weeks. Unnamed (new!) iguanodont dinosaur Earliest Cretaceous Cedar Mountain Formation, ~142 mya BLM federal public land Grand County, Utah, USA

Selfie photo of me with about a dozen small plaster field jackets containing the bones of a new iguanodont dinosaur

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Reposted by Utah Friends of Paleontology

Anthony of the Badlands @mosasaurologist.bsky.social · 31/07/2026

Happy #FossilFriday from the special surprise found inside the last stupid Xiphactinus that i discovered this spring: a complete Micropycnodon! This poor little guy was eaten right before the Xiphactinus (nicknamed Brown Sugar) died, and is forever trapped in fish rib jail. 🧪🐟

Curatorial finger booping the snoot of a completefush. It looks like an armored brown pancake with a googly eye. Its trapped between thin parallel ribs of a much bigger fish.

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 31/07/2026

The Utah Friends of Paleontology Annual Meeting is coming up fast! August 28-30 Salt Lake City, Utah Hosted by Great Basin Chapter and Utah Geological Survey Visit utahpaleo.org/2026-ufop-an... for more information.

Utah Friends of Paleontology graphic for its 2026 Annual Meeting in Salt Lake City, August 28-30. The graphic shows an artist's reconstruction of three Prionocyclus maccombi ammonites against a black background with a stream of small bubbles.

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 31/07/2026

Utah Friends of Paleontology tries to record video of talks at chapter meetings. Our YouTube channel includes paleo talks and field trips. www.youtube.com/@UtahFriends...

Screen capture image of Utah Friends of Paleontology's YouTube channel, showing thumbnails of available videos.

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Reposted by Utah Friends of Paleontology

PaleoJim @paleojim.bsky.social · 29/07/2026

Fisher and Danny flip a jacket containing a basal iguanodont scapula from the Berriasian Doellings Bowl bonebed complex, eastern Utah. @paleontologizing.bsky.social @societyofvertpaleo.bsky.social @renpoole.bsky.social @utahpaleo-ufop.bsky.social @geosociety.bsky.social

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 15/07/2026

Call for speakers and poster presentations at the Utah Friends of Paleontology Annual Meeting, Salt Lake City, Aug 28-30. Circular at the link. utahpaleo.org/wp-content/u...

Image of Utah Friends of Paleontology 2026 Annual Meeting circular Call for Talk and Poster Presentations. Link to the PDF is in the post.

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Reposted by Utah Friends of Paleontology

PaleoJim @paleojim.bsky.social · 28/04/2025

The BLM and the Burpee Museum will be starting their annual spring tours of the Hanksville-Burpee Dinosaur excavations, at what may be the largest single dinosaur site in the Jurassic of North America. www.blm.gov/announcement... @utahpaleo-ufop.bsky.social @paleontologizing.bsky.social

blm.gov

Free daily dino tours return to Hanksville-Burpee Dinosaur Quarry for 2025 Season | Bureau of Land Management

Free daily dinosaur tours return to Hanksville-Burpee Dinosaur Quarry in May and June 2025. Explore real fossils with Burpee Museum experts. Tours run Monday–Saturday, weather permitting.

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 18/04/2025

Hybrid Meeting with author Christa Sadler, Wednesday, May 21, 7:00 PM. Sadler will talk about her brand-new book: "Dinosaur Frontier: Utah at the Dawn of the Cretaceous". Visit the UFOP website at rb.gy/eh1jft for more info or to sign up for the online meeting. #FossilFriday

Composite image with portrait photo of author Christa Sadler, an image of the cover of her new book, "Dinosaur Frontier", and a painting by Andrey Autuchin showing some of the many dinosaurs found in Utah's Early Cretaceous.

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 11/04/2025

Kosmoceratops richardsoni from Utah's Grand Staircase-Escalante National Monument has an amazing array of floppy horns on its frill. Reimagined here as the Sideshow Bob of ceratopsians. The holotype at the Natural History Museum of Utah includes an amazing skull prepared by Mike Getty. #FossilFriday

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 01/04/2025

Join the Great Basin Chapter of Utah Friends of Paleontology for a hybrid meeting Thursday, April 10 at 7 PM. Dr. Nathan Ong will present: "Streamlining Fossil Inventory and Data Analysis Across U.S. National Parks." #paleontology Sign up to attend online at the link. utahpaleo.org/2025/03/31/a...

Dr. Nathan Ong carrying a pick while doing badlands field work looking for fossils.

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Reposted by Utah Friends of Paleontology

Dr. Rod Taylor @fossilrod.bsky.social · 07/03/2025

This #FossilFriday, let’s also celebrate #FractofususFriday! Here’s a cast of several #Fractofusus specimens growing around (and likely absorbing nutrients from) a large mass of decaying tissue on the #Ediacaran sea floor. From Mistaken Point, #Newfoundland.

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Reposted by Utah Friends of Paleontology

H. Pettijohn @punkpaleo.bsky.social · 07/03/2025

Happy #FossilFriday, check out some darling crocodylomorph tracks! 200 million years ago, small and snappy distant-croc-relatives, like Protosuchus, darted and splashed along a ripple-marked lakeshore and through silty riverbeds, leaving behind their traces. (1/2) #paleontology #ichnology

A four-toed crocodylomorph track impressed into orange-brown sandstone. The toes are wide and slightly splayed.

A four-toed crocodylomorph track preserved in orange-brown sandstone. Three of the thin toes are in sharp relief, and a smudge of a toe print has been smeared below the rest of the toes on the right.

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Reposted by Utah Friends of Paleontology

Dave Rudkin @art-h-ropod.bsky.social · 07/03/2025

#FossilFriday takes us back to the #Silurian (~430 MYA) for a classic example of planar close packing in nature -- a silicified favositid "honeycomb" #coral with many individual hexagonal corallites sharing adjacent walls. #FossilHill Formation, #ManitoulinIsland, #Ontario 🇨🇦 #Canada

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Reposted by Utah Friends of Paleontology

Dr Suresh Singh @palaeosingh.bsky.social · 07/03/2025

Presenting the skull of one of the earliest theropod #dinosaurs for this #FossilFriday, Daemonosaurus chauliodus, from the Late #Triassic of New Mexico 🇺🇸. It was unearthed from rocks of the famous Chinle Formation, which outcrops across the Southwestern USA. #Paleontology #Science 🧵 1/

The skull of Daemonosaurus chauliodus at the museum at Ghost Ranch in New Mexico, USA. The snout of this basal theropod dinosaur is short and ends at the front with highly procumbent teeth.

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Reposted by Utah Friends of Paleontology

Julia McHugh @drjmchugh.bsky.social · 07/03/2025

Happy #FossilFriday! Enjoy this maxillary tooth from an Allosaurus. Found in western Colorado on BLM lands. #BLMPaleo I love this tooth! Great resorption pit with a new tooth just starting to form inside. Such a great teaching specimen!

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Reposted by Utah Friends of Paleontology

Claude ✡️🦖🦕 @cascoclauda.bsky.social · 07/03/2025

happy #fossilfriday! this is parapuzosia, a giant ammonite from late cretaceous africa, europe, and north america. it is the largest ammonite currently known, with some estimates putting its weight at over a tonne (art by callum pursall)

art of parapuzosia in a murky underwater environment, surrounded by marine flora and some very small fish

a photo of a parapuzosia fossil, which is 1.8 metres in diameter, with a woman standing next to it for scale

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Reposted by Utah Friends of Paleontology

Amy Atwater @maryanningsrevenge.bsky.social · 07/03/2025

My first book, The Fossil Keeper’s Treasure, is out now! It’s illustrated by the amazing Nat Cardozo. Each page features embossed fossils you can touch. Every fossil tells a story, and every scientist started out as a curious kid. I can’t believe it’s finally here! #fossilfriday #booksky

A paleontologist is outside holding a children’s book called “The Fossil Keeper’s Treasure” with a dinosaur poking its head in the background.

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 07/03/2025

Hadrosaur skin impressions with dorsal osteoderms at the Natural History Museum of Utah. Many hadrosaur fossils found at Grand Staircase-Escalante National Monument include skin impressions. #FossilFriday

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 06/03/2025

Dr. Jim Kirkland presents "Eggs, Nests, and Dinosaur Behavior: Evidence from the Morrison Formation, Colorado Plateau" at the February Great Basin UFOP Chapter meeting in SLC. #paleontology #jurassic www.youtube.com/watch?v=t4W1...

youtube.com

Eggs, Nests, and Dinosaur Behavior: Evidence from the Morrison Formation, Colorado Plateau

YouTube video by Utah Friends of Paleontology

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Reposted by Utah Friends of Paleontology

Jim Lehane @jazinator.bsky.social · 28/02/2025

A public lands protest will take place this Saturday, March 1st, at the Dinosaur National Monument entrance (Utah side), in support of federal employee community members who have recently lost their jobs. #PleaseShare #Paleontology #Dinosaurs #NationalParks

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 03/02/2025

Join the Great Basin Chapter of Utah Friends of Paleontology for a hybrid meeting Thurs. Feb. 13 at 7 PM. Jim Kirkland — Utah’s State Paleontologist will present: Eggs, Nests, and Dinosaur Behavior: Evidence from the Morrison Formation. In-person & online. tinyurl.com/36994wwn

Utah State Paleontologist Jim Kirkland standing near a reconstruction of a Utahraptor skeleton at the Museum of Ancient Life in Lehi, UT.

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 25/01/2025

If any Salt Lake City area UFOP members (or wannabes) would like to help staff our table at NHMU's Dinofest Saturday and/or Sunday, February 25 & 26, please sign up here: forms.gle/AGhXEMrK6ShG... #FossilFriday #scienceoutreach #utahpaleontology You'll get a badge and Museum pass. Thanks!

Dr. Jim Kirkland, Utah State Paleontologist and Ethan Cowgill talking with visitors to the UGS and UFOP tables at the Natural History Museum of Utah's Dinofest event.

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Reposted by Utah Friends of Paleontology

Steve Brusatte @stevebrusatte.bsky.social · 24/01/2025

Full description of our Scottish pterosaur, Dearc! The final piece of @nataliajagielska.bsky.social 's PhD in Edinburgh. Natalia did a sublime job working on Dearc, becoming a world expert on pterosaurs along the way. Read her work 👇 (open access!)

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Reposted by Utah Friends of Paleontology

Robert Gay @paleorob.bsky.social · 24/01/2025

Happy #FossilFriday everyone! This is a #3Dprint of a bone from the #Triassic Thaynes Formation of #Idaho. Originally described as a skull bone from an #ichthyosaur, it turns out not to be. Come talk to @garyonyx-mcgoy.bsky.social and me at @nhmu.bsky.social #DinoFest this weekend! #IdahoPaleo

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Ben Miller @extinctmonsters.bsky.social · 24/01/2025

*motorcycle noises* #FossilFriday

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Reposted by Utah Friends of Paleontology

Robert Boessenecker, Dr. of Whaleontology ™️ @coastalpaleo.bsky.social · 24/01/2025

Accidental Flavian hair

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Reposted by Utah Friends of Paleontology

Dr Dave Hone @davehone.bsky.social · 24/01/2025

For #fossilfriday here is the little collection I gave made of toys and models based on species I gave named. I hope there will be a pterosaur one day to add to it.

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 23/01/2025

Saturday and Sunday at the Natural History Museum of Utah. #FossilFriday

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Reposted by Utah Friends of Paleontology

Natural History Museum of Utah @nhmu.bsky.social · 08/01/2025

DinoFest is only a few weeks away! Our biggest event of the year returns January 25-26 🦖 Reserve your tickets now by clicking below.

nhmu.utah.edu

DinoFest

One of NHMU's most popular events, DinoFest is a festival celebrating all things dinosaurs, with an emphasis placed on Utah's dinosaur discoveries.

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Reposted by Utah Friends of Paleontology

Riley Black 🏳️‍⚧️ 🦖 @restingdinoface.bsky.social · 10/01/2025

If you’ve bought, read, recommended, asked for, or otherwise talked up The Last Days of the Dinosaurs and When the Earth Was Green, thank you. The success of the books means I can write more books, tell more stories, and keep the lights on. www.undertheumbrellabookstore.com/s/search?q=R...

Cover of Riley Black’s book The Last Days of the Dinosaurs, showing a skeletal rex split between a living restoration and a blank page.

The cover for Riley Black’s book When the Earth Was Green, showing dinosaurs and prehistoric mammals and insects among ferns and other ancient plants

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Reposted by Utah Friends of Paleontology

Thomas R. Holtz, Jr. @arctomet.bsky.social · 10/01/2025

#FossilFriday Skull of the hadrosaurid Prosaurolophus in the preparation lab of the Science Museum of Minnesota

Skull of the hadrosaurid dinosaur Prosaurolophus, still partially in a field jacket, at the Science Museum of Minnesota

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John Moffitt 🌊🌊🧢 @johnmoffitt.bsky.social · 09/01/2025

The newly identified trilobite Protolenus is seen in a 3D model reconstruction by Arnaud Mazurier, a researcher at the University of Poitiers in France. #FossilFriday

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Utah Friends of Paleontology @utahpaleo-ufop.bsky.social · 27/12/2024

The Barosaurus reconstruction at the Natural History Museum of Utah presents a scene with the giant animal mired and attacked by an Allosaurus pack. Uniquely, this setting and the walkway through it lets you view the sauropod from above and below its huge dorsal vertebrae. #FossilFriday

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Reposted by Utah Friends of Paleontology

Dr Suresh Singh @palaeosingh.bsky.social · 06/12/2024

Presenting the #temnospondyl, #Siderops kehli, on display at the Queensland Museum Kurilpa in Brisbane, Australia for this #FossilFriday. It grew up to 2.7 m long & inhabited the rivers & lakes of Australia during the Early #Jurassic. 🧵 1/

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E Lund @bwana-lund.bsky.social · 06/12/2024

#fossilfriday Baking soda not just for baking and deodorizing your fridge. It can also be used to clean fossils! Air abrasion is a way to remove matrix from a fossil gently revealing a fossils hidden beauty. Here I am removing matrix from a small fragment of Triceratops skull with baking soda.

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Reposted by Utah Friends of Paleontology

Dr Richie Howard @arthropoda-curator.bsky.social · 06/12/2024

Here’s an undescribed Pleistocene isopod preserved in East African gum copal for #FossilFriday!

A wood louse preserved suspended in the golden sap of an ancient tree

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Thomas R. Holtz, Jr. @arctomet.bsky.social · 06/12/2024

#FossilFriday #FossilFridayAtoZ The tiny dragon, the Jurassic scansoriopterygid Yi

Skeleton (and close up of skull and finger) of the tiny scansoriopterygid dinosaur Yi

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Reposted by Utah Friends of Paleontology

Anthony (Tony) J. Martin @ichnologist.bsky.social · 06/12/2024

For #FossilFriday, me measuring a giant myriapod burrow preserved as a natural cast in a fluvial sandstone, Late Silurian (420+ mya) Grampians Group, Victoria, Australia. Photo from 2006 field work there, finally published on this research in 2021: www.tandfonline.com/doi/full/10.... 🧪🪨⚒️ #ichnology

Person (me) with a beard viewed from below, wearing brown hat, dark green jacket, and light green field vest using a tape measure to find size of a 20-cm wide fossil burrow sticking out of a reddish sandstone. Sandstone is all around me, which makes sense because I was measuring the burrow in an overhanging part of the outcrop; Grampians Group (Late Silurian), Victoria, Australia.

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Reposted by Utah Friends of Paleontology

Kelsey Jenkins, PhD @reptiliferous.bsky.social · 06/12/2024

Vancleavea campi, a Late Triassic archosauriform preserved with some of the most incredible osteoderms I’ve ever seen. Cast on display at the Smithsonian National Museum of Natural History. #FossilFriday

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Reposted by Utah Friends of Paleontology

Bill Parker @chinleana.bsky.social · 06/12/2024

For #FossilFriday here is the partial skull and carapace of the recently described ‘carnivorous aetosaur’ from the Late Triassic of Texas. It provides significant new information about Coahomasuchus kahleorum.

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Reposted by Utah Friends of Paleontology

Prehistoric Museum @prehistoricmuseum.bsky.social · 06/12/2024

If we did a Spotify Fossil Prep Wrapped for the last six decades, it might some look something like this! If you want to see more fossils prepared in our lab, donate to our funding campaign all this month! And if you can’t donate, please share! #FossilFriday www.givecampus.com/schools/Utah...

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BJ Nicholls @bjn2.bsky.social · 06/12/2024

A small Elrathia kingii trilobite from Utah's Wheeler Shale. This is he most abundant trilobite species in the USA. E. kingii inhabited the boundary between dysoxic (low oxygen) and anoxic bottom waters. E. kingii fossils consistently occur in strata formed in low oxygen levels. #FossilFriday

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Brandon Peecook @gondwannabe.bsky.social · 06/12/2024

“New” fossils for #FossilFriday: this is an impressive brontothere thoracic vert I found low in the White River Formation of Wyoming. The neural spine is so long! Brontotheres might look like rhinos 🦏 , and the are perissodactyls, but last I understood they were on the horse stem! 🐴

A large fossil vertebra in the ground. The round centrum is at the bottom, with a long long neural spine extending upward.

Skeleton of the brontothere Megacerops at the Smithsonian in right lateral view. The high spines of the shoulder region stand out. From Wikipedia.

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