Opisthokonts: True Posterior Flagellum

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Opisthokonts: True Posterior Flagellum

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By Michael Alan Prestwood

Sun 22 Feb 2026

Published 7 months ago.

Updated 2 months ago.

Opisthokonts: True Posterior Flagellum

~1.15 Billion Years Ago (+/- 50 million)

12 unique amino acids + glycogen energy storage + True Posterior Flagellum

Fungi and animals share a common ancestor within the Opisthokonts. At this point, neither were fungi or animals as we know them.

This is the birth of the “Pushers.” Our ancestors perfected the posterior flagellum, moving the single motor to the very back of the cell. This turned the cell into a biological torpedo. By pushing from the rear rather than pulling from the front, these cells gained incredible speed and stability in open water. This “rear-engine” configuration is the shared heritage of every animal and fungus on Earth, a high-performance design that defined our shared ancestor as an active, hunting consumer.

Key shift:

Divergence from proto-animal lineage
Likely unicellular, aquatic ancestors

— map / TST —

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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.