What is the maximum reported duration for which *Triops* eggs can remain viable in dormancy?

Answer

27 years

The dormant cyst stage represents the extraordinary longevity of the *Triops* species across vast stretches of time. While the active shrimp lives briefly, its eggs, or cysts, are equipped to wait out long periods of harsh environmental conditions. Specifically, reports indicate that these tiny capsules of life can remain fully viable and capable of hatching for an astonishing length of time, measured up to 27 years. This decades-long waiting period, achieved through suspended development, is fundamental to the creature's survival strategy, allowing it to endure long geological timescales and reappear only when precise conditions are met.

What is the maximum reported duration for which *Triops* eggs can remain viable in dormancy?
animallifespancrustaceandinosaur shrimp