Paleontologists believe the marks are evidence of what they call “prehistoric foreplay” among the dinosaurs of Cretaceous Colorado.
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Dinosaur Discovered With Feathers, Skin Intact ‘Looked a Lot Like an Ostrich’
A uniquely well-preserved dinosaur found in Alberta is revealing never-before-seen traits that make the animal live up to its name: “the bird mimic.”
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Giant Feathered Dinosaur, With ‘Unprecedented’ Features, Discovered in South Dakota
Two “exceptionally large” feathered dinosaurs have been discovered in a quarry in South Dakota, a find that may help answer some crucial questions about life in the ancient West.
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Montana Dinosaur Species Grew Fast, Died Young, May Have Been Warm-Blooded
It walked on two feet when it was young, but on four when it was old. It could grow up to 3 meters in a single year — if it…
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‘Remarkable’ Dinosaur Nest Discovered in Montana Suggests Some Dinos Re-Used Breeding Sites
A pair of fossilized dinosaur nests offer some of the strongest indications yet that certain dinos brooded their eggs, re-used their nests, and possibly defended their nesting territory much like…
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Dinosaur Blood Cells, Soft Tissue Discovered in 75-Million-Year-Old Fossils
Scientists say they’ve isolated what appear to be red blood cells and other microscopic bits of soft tissue from several 75-million-year old dinosaur fossils, using a technique that could revolutionize the…
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Giant Crested Bird-Like Dinosaur Discovered in the Dakotas
Two teams of paleontologists were each puzzling over unusual, but incomplete, fossil skeletons of an animal they couldn’t identify, when they finally met and realized that they were all looking…
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Feathers Were ‘Peculiar’ to Special Set of Dinosaurs, New Fossil Study Finds
Some of the Ancient West’s most distinctive and downright weird dinosaur species — from the famous Tyrannosaurus rex to the odd therizinosaurs — turn out to be members of an…
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‘Unusual’ Fossil Egg Reveals Evolutionary Link Between Dinosaurs and Birds
Millions of years after the reptilian animals we know as dinosaurs disappeared, some of their traits persisted in surprising ways among their descendants — birds — a new fossil shows….
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Ostrich-Like Dinosaur Discovered in Alaska
Paleontologists sifting through fossils in an Alaska museum have discovered evidence of a dinosaur never before found in the near-Arctic — a type of large, leggy theropod called an ornithomimosaur….
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Extinct Tropical Bird Discovered in Wyoming
Providing yet another reminder of how much the land — and the life on it — changes over time, scientists say they’ve found, on the arid plateaus of southwestern Wyoming,…
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New Feathered Dinosaur Discovered in Texas’ Big Bend National Park
Like Darwin’s many finches living side-by-side in the Galapagos Islands, a surprising variety of feathered, bird-like dinosaurs once roamed the ancient West from Alberta to Texas, scientists say. A team…
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Tiny Fossil Discovered in Wyoming Reveals Great-Granddaddy of Hummingbirds
A petite and exquisitely preserved 50-million-year old fossil reveals the remains of a lustrous black bird that was the precursor to today’s hummingbirds, researchers say. The fossil bird, originally excavated…
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