Researchers discover four dinosaurs in Montana

A team of students, volunteers, and staff from the University of Washington unearth a flyby trike in northeastern Montana.Credits: Rachel Ohmyston / Burke Museum / University of Washington

A team of paleontologists at the University of Washington and its Burke Museum of Natural History and Culture unearthed four dinosaurs in northeastern Montana this summer. All fossils are returned to the Burke Museum and the public can see paleontologists remove the surrounding rocks at the Fossil Preparation Institute.

The four Dinosaur fossil Ilium-or Hip bone— Ostrich-sized theropods, a two-legged group eating meat dinosaur Includes Tyrannosaurus Rex and Raptors. Duck beak dinosaur hips and legs. Apricots that mimic a rare ostrich, or perhaps another theropod pelvis, toe claws, limbs that may be new. A triceratops specimen consisting of a skull and other fossilized bones. 3 out of 4 dinosaurs were found in all Proximity Land of the Bureau of Land Management currently rented to ranchers.

In July 2021, a team of volunteers, paleontology staff, kindergarten to high school educators, UW and other university students who participated in the DIG Field School Program worked together to unearth these dinosaurs. The fossil was found in the Hell Creek Formation. Geological formation It dates back to the latest part of the Cretaceous, 66-68 million years ago. A typical paleontological excavation excavates one known fossil. However, the Hell Creek Project is an ongoing collaborative study of paleobiologists around the world studying life just before, during, and after the K-Pg mass extinction event that killed all dinosaurs except birds. The Hell Creek Project is unique in that it samples all the flora and fauna found throughout the rock formation in an unbiased manner.

Researchers discover four dinosaurs in Montana: fieldwork lives together at the end of the

Hell Creek Formation. Credits: Andrea Godinez / Burke Museum / University of Washington

Gregory Wilson Mantilla, a professor of UW biology at the Burke Museum and curator of vertebrate paleontology, said: “These give us a better understanding of the processes involved in biodiversity loss and development, as well as ecosystem fragility, collapse and aggregation.”

All dinosaurs except Triceratops will be prepared at the Fossil Preparation Institute at the Burke Museum this fall and winter.Triceratops Fossil remains This is because the excavation team continues to find more and more bone during excavation and needs additional field seasons to excavate more bone that may be connected to the surrounding rocks. The team will complete the excavation in the summer of 2022.

The team is called the “Fly Bee Trike” in honor of the rancher who first identified the dinosaur while flying over the ranch, and the dinosaur’s frills, horn bones, individual ribs, and lower jaw. I found the bones of the teeth and the occipital condyles. — Called a “trailer hitch”. This is the ball behind the skull that connects to the vertebrae of the neck. The team estimates that about 30% of the individual’s skull has been found so far, and more potential bone will be unearthed next year.

Researchers discover four dinosaurs in Montana: fieldwork lives together at the end of the

A close-up view of the occipital condyles bone (called the “trailer hitch”) of the flyby trike. A ball behind the skull that connects to the vertebrae of the neck.Credits: Rachel Ohmyston / Burke Museum / University of Washington

Flyby trikes were found in hardened mud, where bones overlapped each other in a way that was different from the way live animal bones were placed. These clues are that dinosaurs may have died in floodplains, moved by floods and river systems after death and before fossilization, or T. It shows that it was moved and mixed by a scavenger like Rex. In addition, the flyby trike is one of the last triceratops that lived before the mass extinction of K-Pg. Burke paleontologists estimate that it lived less than 300,000 years before the event.

“Before this year’s excavation, some of Flyby Trike’s frills and eyebrow weapons were collected and then prepared by volunteer preparers in the Fossil Preparation Lab. The frills were collected in many pieces and volunteered. Fantasticly puzzled together by. Combined with the puzzled frills, the specimen was found to be probably an old “grandparent” trikeratops, “said the Burke Museum, which led the fieldwork this summer. Kelsey Abrams, director of the Paleobiotics Preparatory Institute, said. “The triangular bones along the frills, called the” epi-occipital bones, “are completely fused and barely recognizable in the specimen compared to the sharp, prominent triangular shape found in young individuals. In addition, the corners of the eyebrows are curved downwards rather than upwards. , And this feature has also been reported to be found in older animals. “

Amber and seed pods were also found on Fly by Trike. These discoveries allow paleobotanists to determine what the plants that lived with Triceratops, what the dinosaurs might have eaten, and what the entire ecosystem looked like up to Hell Creek. Mass extinction event..

Researchers discover four dinosaurs in Montana: fieldwork lives together at the end of the

Kelsey Abrams, manager of the Paleontology Preparatory Institute at the Burke Museum, opens a field jacket for theropod ilium.Credits: Timothy Kenny / Burke Museum / University of Washington

“Plant fossils of this period are important for understanding the broader ecosystem. Not only do plant materials tell us what these dinosaurs probably ate, but plants also have their environment. It gives us a broader picture of what it looked like, “said Page Wilson. UW graduate student in Earth and Space Science. “Plants are the foundation of the food chain and an important part of the fossil record. It’s exciting to see this new material in the immediate vicinity of vertebrate fossils!”

Museum visitors can see paleontologists remove rocks from the hips of theropods, the first of the four dinosaurs, at the Paleontology Preparatory Institute in Burke. Additional fossils will be prepared in the coming weeks. All four dinosaurs will be trusted by the general public on behalf of the Land Management Department and will be part of the Burke Museum’s collection.

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Quote: Researchers discover four dinosaurs in Montana (September 21, 2021) obtained on September 21, 2021 from https: // Did

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Researchers discover four dinosaurs in Montana

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