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Triceratops

By Michael Alan Prestwood

Sun 15 Mar 2026
Published 2 months ago.
Updated 22 hours ago.
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Three facial horns, broad frill, and powerful four-legged body. It was one of the last great non-avian dinosaurs and is the classic fully developed ceratopsid most people picture when they think of horned dinosaurs. Lived from about 68 to 66 million years ago.

Triceratops

Lived from ~68 to 66.04 million years ago.

A large, late horned dinosaur famous for its three facial horns, broad frill, and powerful four-legged body. It was one of the last great non-avian dinosaurs and is the classic fully developed ceratopsid most people picture when they think of horned dinosaurs. Lived from about 68 to 66 million years ago.

Triceratops came late to the story, living in the last few million years before the great extinction. And the body shape we instantly recognize as a “horned dinosaur” came late too. In paleontology, that overall structural design is often described as a body plan, or morphology. That classic ceratopsian body plan—with a broad frill, facial horns, a deep skull, and a strong four-legged frame—only really emerged during the final 30 million years or so of dinosaur history. It did not appear all at once, but took shape step by step, until animals like Triceratops brought that design to one of its fullest expressions.

— map / TST —

Michael Alan Prestwood
Author & Natural Philosopher
Prestwood writes on science-first philosophy, with particular attention to the convergence of disciplines. Drawing on his TST Framework, his work emphasizes rational inquiry grounded in empirical observation while engaging questions at the edges of established knowledge. With TouchstoneTruth positioned as a living touchstone, this work aims to contribute reliable, evolving analysis in an emerging AI era where the credibility of information is increasingly contested.
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TST Column
April 22, 2026
Column Research….
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3. Science FAQ »
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4. Philosophy FAQ »
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5. Critical Thinking FAQ »
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6. History FAQ!
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Bonus Deep-Dive Article
1 Goal: Flourish (TST Ethics)

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