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sauropod
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Illustration of a massive Brachiosaurus dinosaur with a long neck and nostrils above its eyes, shown beside a car and two people for scale. Measurement bars indicate its great size, and text provides details about its period, length, height, and locations. Illustration of the giant sauropod dinosaur Dreadnoughtus, shown with a long neck and tail, standing next to a much smaller elephant for size comparison. Scale bars indicate 3 meters and 9 feet, with text noting Dreadnoughtus measured 85 feet (25.9 meters) from head to tail. An illustration of an Apatosaurus, a massive long-necked dinosaur with a long whiplash tail, shown beside a car and two people for scale. Measurement bars indicate 1 meter and 3 feet, emphasizing the dinosaur's enormous size. Figure 2: Trackways of a sauropod and a carnivorous theropod at Glen Rose, Texas.Courtesy, Library Services Department, American Museum of Natural History, New York City; photograph, R.T. Bird (Neg. N Illustration of a Brontosaurus dinosaur with a long neck and tail, walking on four legs, shown beside a faint outline of an elephant for size comparison. Scale bars indicate the Brontosaurus measures about 20 meters (66 feet) long.
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Sea otter (Enhydra lutris), also called great sea otter, rare, completely marine otter of the northern Pacific, usually found in kelp beds. Floats on back. Looks like sea otter laughing. saltwater otters
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Lion (panthera leo)
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The bearded vulture (Gypaetus barbatus) is seen in Switzerland on December 2024
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sauropod: References & Edit History

Article Contributors

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  • The Editors of Encyclopaedia Britannica
    Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.

Other Encyclopedia Britannica Contributors

Article History

Type Description Contributor Date
Deleted Web site: National Center for Biotechnology Information - PubMed Central - Acromegaly: the disease, its impact on patients, and managing the burden of long-term treatment. Jun 12, 2026
Add new Web site: CellPress - Current Biology - Sauropods. Jul 08, 2024
Add new Web site: National Center for Biotechnology Information - PubMed Central - Acromegaly: the disease, its impact on patients, and managing the burden of long-term treatment. Mar 12, 2024
Add new Web site: AZ Animals - Sauropoda. Jul 29, 2022
Add new Web site: Science Kids - Fun Science and Technology for Kids! - The Biggest Dinosaurs Ever! Mar 22, 2017
Add new Web site: SUNY Orange - Online Biology Library - Sauropods. Mar 22, 2017
Text that mentions Dreadnoughtus as the largest terrestrial animal that ever lived added. May 06, 2015
Updated boundary years for geologic time periods. May 06, 2015
Illustration of Dreadnoughtus added. May 06, 2015
Add new Web site: University of California Museum of Paleontology - The Sauropod Dinosaur. Aug 29, 2013
Added new Web site: Enchanted Learning - Sauropod. Sep 16, 2008
Revised to reflect updated geologic time scale. Aug 11, 2008
Article revised. Sep 27, 2002
Article added to new online database. Jul 20, 1998
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