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Scientists used to think that all dinosaurs were large and slow-moving. Which discovery overturned this idea and helped convinced the scientific community that birds evolved from dinosaurs? A. Fossils of pterosaurs confirmed that these reptiles had hollow bones and wings. B. Fossils of the small theropod dinosaur Deinonychus showed that it walked on two legs and had a large sickle-shaped claw used for slashing. C. A fossil of Compsognathus, a turkey-sized dinosaur discovered around the same time as Archaeopteryx, showed that it had features similar to those of Archaeopteryx. O. Fossils of Archaeopteryx, which was about the size of a modern-day raven, showed that it had wings and a jaw with teeth, and that it walked on two feet.

Scientists used to think that all dinosaurs were large and slow-moving. Which discovery overturned this idea and helped convinced the scientific community that birds evolved from dinosaurs? A. Fossils of pterosaurs confirmed that these reptiles had hollow bones and wings. B. Fossils of the small theropod dinosaur Deinonychus showed that it walked on two legs and had a large sickle-shaped claw used for slashing. C. A fossil of Compsognathus, a turkey-sized dinosaur discovered around the same time as Archaeopteryx, showed that it had features similar to those of Archaeopteryx. O. Fossils of Archaeopteryx, which was about the size of a modern-day raven, showed that it had wings and a jaw with teeth, and that it walked on two feet.

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Scientists used to think that all dinosaurs were large and slow-moving. Which discovery overturned this idea and helped convinced the scientific community that birds evolved from dinosaurs? A. Fossils of pterosaurs confirmed that these reptiles had hollow bones and wings. B. Fossils of the small theropod dinosaur Deinonychus showed that it walked on two legs and had a large sickle-shaped claw used for slashing. C. A fossil of Compsognathus, a turkey-sized dinosaur discovered around the same time as Archaeopteryx, showed that it had features similar to those of Archaeopteryx. D. Fossils of Archaeopteryx, which was about the size of a modern-day raven, showed that it had wings and a jaw with teeth, and that it walked on two feet.
Transcribed Image Text:Scientists used to think that all dinosaurs were large and slow-moving. Which discovery overturned this idea and helped convinced the scientific community that birds evolved from dinosaurs? A. Fossils of pterosaurs confirmed that these reptiles had hollow bones and wings. B. Fossils of the small theropod dinosaur Deinonychus showed that it walked on two legs and had a large sickle-shaped claw used for slashing. C. A fossil of Compsognathus, a turkey-sized dinosaur discovered around the same time as Archaeopteryx, showed that it had features similar to those of Archaeopteryx. D. Fossils of Archaeopteryx, which was about the size of a modern-day raven, showed that it had wings and a jaw with teeth, and that it walked on two feet.
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