From PBS Eons.

Watch Weathered: Earth’s Extremes for free now! https://to.pbs.org/WeatheredEons1

Where are all the east coast dinosaurs? Why don’t we find famous species like Triceratops in Central Park? Turns out, evolution and geology came together to make the east coast into an ancient lost world of weird dinosaurs.

Correction: 02:05 Anchisaurus was 6 feet long, not 6 meters

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References:
https://docs.google.com/document/d/1hY6uqxOahJEOaYssL_JMKfbfA13DRV53TGErQQ0SJjo/edit?usp=sharing