Fall 2025 Closure Alert The Quarry Exhibit Hall at Dinosaur National Monument will be closed from Sept 8 through late October for parking lot and sidewalk renovations. QuarryExhibitHallFall2025Closure - Dinosaur National Monument (U.S. National Park Service)

Ally the Allosaurus from @DinosaurNPS was officially unveiled today inside concourse B as part of the Salt Lake City International Airport Phase 3 opening! Allosaurus is the state fossil for Utah, & a fabulous ambassador for the state. 🔗 https://t.co/q94kTQRgNs

🦕 Don’t miss tomorrow’s #VirtualFossilFriday with MOR & @DinosaurNPS! Join us at 9 a.m. MST as MOR’s @LadyNaturalist chats with Lead Paleontologist & Museum Curator @paleochick about late Jurassic-era fossils. Tune in via Zoom! 🦖 🔗 https://t.co/o913lZIKcv

“Dinosaurs in Badlands” specifically focuses on fossils collected from the Triassic, Jurassic & Cretaceous “badland” formations commonly located around the western North America. @DinosaurNPS was chosen as a focus for fossils from the late Jurassic & early Cretaceous periods. 🧵

They: 🦷 Found a fossilized tooth and bone fragments while visiting a dig 🦋 Tagged three monarch butterflies for a research study and learned about citizen science 🗺 Navigated with a topographic map and compass to native plants in the park 🧵2/4

Our Utah Field Paleontology campers got to visit “ The Disneyland of Dinosaurs” aka @DinosaurNPS this week with a special behind the scenes look from park paleontologist @paleochick!

(1/5) A group of scientists w/@USGS @NatlParkService @USFWS @BLMNational and volunteers floated ~150 miles of the Yampa River corridor in @DinosaurNPS, collecting data needed to manage & plan for #ClimateChange. Follow their journey! #ClimateR_D #FieldworkFriday #FlashbackFriday

🦋 Monarchs and 🌿 milkweed, oh my! @LatinoLhip interns Cassandra & Juan Pablo helped @GrandCanyonNPS and @DinosaurNPS restore and propagate milkweed and other native plants. They also monitored monarchs ➡️ https://t.co/9otKOPdFgi 📸 NPS #FindYourPark #NPSYouth #Internships

Besides working the lookout, they explored & collected over 280 plant specimens for the DINO & University of Colorado herbaria, of which 139 (17% of today’s known taxa!) were species new to the park’s records.

#TextbookvsReality: A monocline is a geologic structure where rock layers are folded on one side. A monoclinal fold associated with the Mitten Park Fault in @DinosaurNPS vs. the textbook example on the right. #Geology101

Next week is #NationalFossilDay! Join us as we celebrate with our Let's Tour! livestream event! We'll be visiting @DinosaurNPS @JDFossilBedsNPS & @BadlandsNPS to meet their scientists and learn about protecting fossils on public lands. Subscribe today: https://t.co/udRmjf2WVW

Rawrrrrr! Don’t worry, it’s mostly armless. 🦖 ⁣Dinosaur bones and tracks are favorite attractions at several parks. In fact, dinosaur fossils have been discovered at or associated with at least 27 national park units. More: https://t.co/ONB6lTDKSE #FindYourPark @DinosaurNPS

One of the most common fossils we find for this animal are those of the bony plates, also known as osteoderms, that would have covered its back and acted as a type of armor for protection. These fossils are often range in size from a pea - half-dollar in most specimens. #NPSPaleo

People ask 'Why does the Green River cut through the middle of Split Mountain when logically it should have flowed around it?'. This question also puzzled John Wesley Powell during the first scientific exploration of the Green and Colorado Rivers in 1869. https://t.co/qHzUazNsMm

We've run 3 rapids in the canyon so far today. Managed to get a quick shot from the bottom.

Look at this view down the river! We're calling this canyon Split Mountain Canyon.

Climbed to the top of Mt. Hawkins today with Bradley. It was a hike but from the top the view was incredible!

Hawkins has gone off hunting for the day. A nice rest this will be for all of us.

Hawkins is back, with him a fine, fat deer. We're elated.

We've decided to name the mountain - Mount Hawkins, for our hunter friend who brought us such a dinner.