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Othniel Charles Marsh discovered one species of Apatosaurus, and named it Apatosaurus ajax. When he discovered Apatosaurus excelsus, though, he assigned it to its own genus, Brontosaurus. Later it was found that both Brontosaurus and Apatosaurus ajax belonged to the same genus, so Brontosaurus was reassigned to Apatosaurus excelsus.
Othniel Charles Marsh discovered one species of Apatosaurus, and named it Apatosaurus ajax. When he discovered Apatosaurus excelsus, though, he assigned it to its own genus, Brontosaurus. Later it was found that both Brontosaurus and Apatosaurus ajax belonged to the same genus, so Brontosaurus was reassigned to Apatosaurus excelsus.
Othniel Charles Marsh discovered one species of Apatosaurus, and named it Apatosaurus ajax. When he discovered Apatosaurus excelsus, though, he assigned it to its own genus, Brontosaurus. Later it was found that both Brontosaurus and Apatosaurus ajax belonged to the same genus, so Brontosaurus was reassigned to Apatosaurus excelsus.
Brontosaurus was discovered by Othniel Charles Marsh in 1879. Two years before, however, he discovered Apatosaurus ajax. It turns out that Brontosaurus belonged to the same genus as Apatosaurus ajax, so the name Brontosaurus isn't valid. Brontosaurus is now called Apatosaurus excelsus.
Othniel Charles Marsh discovered Stegosaurus in 1877. The fossil was found in Morrison, Colorado.
Othniel Charles Marsh discovered Stegosaurus in 1877. The fossil was found in Morrison, Colorado.
Othniel Charles Marsh discovered Stegosaurus in 1877. The fossil was found in Morrison, Colorado.
Othniel Charles Marsh discovered Stegosaurus in 1877. The fossil was found in Morrison, Colorado.
Othniel Charles Marsh discovered Stegosaurus in 1877. The fossil was found in Morrison, Colorado.
Othniel Charles Marsh named Stegosaurus in 1877. Its fossils were discovered near Morrison, Colorado shortly before that. Originally, he thought that Stegosaurus was an aquatic, turtle like animal until more specimens were discovered.
The first Allosaurus was discovered in 1877 in Colorado and named by Othniel Charles Marsh. This specimen offered just a few fragments of the dinosaur.
When Othniel Charles Marsh discovered Stegosaurus in 1877, he believed that the plates laid on Stegosaurus's sides like the shingles on a roof. That is why he called it Stegosaurus, meaning "roof lizard" in Greek. Now we know that the plates stood up vertically.