So if we scientists knew this all the way back in 1903, why did I—a child of the 1980s and 90s—grow up learning about a dinosaur that apparently never existed? Well, it seems that museums were super slow to adjust to the change, and some flat-out disagreed that it should be changed at all. Its image and name lived on in pop culture, being highlighted in Disney’s Fantasia in 1940 and in The Land Before Time in 1988.
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