The more you know about the past, the better prepared you are for the future. Theodore Roosevelt

The ultimate arbiter of the evolutionary fate of a species is the environment. David Lack

The dinosaurs became extinct because they didn't have a space program. Larry Niven

The dinosaurs are gone, and we’re not going to bring them back. Stephen Jay Gould

Dinosaurs are the greatest mystery of the planet's history.

The past is a foreign country: they do things differently there. L. P. Hartley

Dinosaurs were the first and greatest empire of life on Earth.

The dinosaurs' long tenure had ended, and the mammals had taken over.

The dinosaurs' long tenure had ended, and the mammals had taken over. Neil deGrasse Tyson

The history of life on Earth is written in extinction.

The history of life on Earth is written in extinction. Michael Shermer

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