Group of Allosaurus jimmadsenis attack a juvenile sauropod
A group of Allosaurus jimmadsenis attack a juvenile sauropod. The huge carnivore inhabited the flood plains of western North America during the Late Jurassic Period, between 157-152 million years ago.
[Research supported by National Science Foundation grant DEB 9904045.]
Learn more in the Natural History Museum of Utah news story New species of Allosaurus discovered in Utah. (Date image taken: unknown; date originally posted to NSF Multimedia Gallery: June 24, 2020)
Credit: Todd Marshall
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