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First Cynodonts

By Michael Alan Prestwood

Thu 21 May 2026
Published 14 hours ago.
Updated 14 hours ago.
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First Cynodonts

~260 Million years ago

For the beginning of Cynodonts, use the Late Permian, around 260 MYA, with early forms such as Procynosuchus. This is the branch where the mammal-like jaw, teeth, palate, and breathing package really starts tightening toward mammals.

— 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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