Brain Evolution: From Precognitive to Consciousness.

Animal Evolution

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Animals: Brain Evolution: From Precognitive to Consciousness

Brain Evolution: From Precognitive to Consciousness

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ANIMAL EVOLUTION

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Lived from 470 to 445 million years ago.

Asaphid trilobite

Arthropod Evolution

This trilobite fossil on display in my home is likely an Asaphid trilobite from about 450 million years ago. Trilobites were not our ancestors. Mammals arose from a different branch. Our connection lies deeper in time, through a shared bilaterian ancestor that lived about 600 million years ago, before either lineage took its separate path.

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Was T. Rex feathered?

Dinosaur Evolution

The T. rex feather question is a great example of how ideas move through categories. Scaly skin impressions are empirical. Comparisons to feathered relatives are rational. A fuzzy young T. rex or partly feathered adult remains speculative. Good thinking means keeping each piece in its proper place.

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Bilaterian Split: The Origin of Agency

Animal Evolution

07 Jul 2026

(Updated 1 week ago)

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Animal Vocabulary: Dozens of Words

Animal Evolution

07 Jul 2026

(Updated 2 weeks ago)

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Bacterial Endosymbiosis: Origin of Eukaryotes

Evolution

07 Jul 2026

(Updated 2 weeks ago)

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Brain Evolution: From Precognitive to Consciousness

Life learns to move, sense, and survive!

Animal evolution traces the long story of how movement, senses, behavior, and intelligence emerged over hundreds of millions of years. From early multicellular life to the vast diversity of animals today, this section explores how natural selection shaped bodies, instincts, and survival strategies.

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