Revogastes

Revogastes is not a recognized real-world taxon. The term appears mainly in speculative biology and some science-fiction contexts, where it is used as a hypothetical, sometimes polyphyletic lineage of organisms to explore ideas about developmental plasticity and reversibility.

Descriptive accounts vary, but common threads describe revogastes as organisms capable of reversible metamorphosis, enabling shifts between distinct life stages or physiologies without permanent commitment to one form. They are typically depicted with high regenerative ability and flexible energy metabolism, allowing survival in fluctuating environments. Morphology in these accounts ranges from simple, modular bodies to more complex forms, reflecting authors' narrative needs.

Because revogastes are not biologically defined entities in real taxonomy, there is no standard classification. In fictional works, authors may place them anywhere on the tree of life and assign diverse ecological roles—from scavengers to apex predators. They are often used as a thought experiment about adaptability, resilience, and the limits of evolutionary reversibility.

In culture and games, revogastes appear as speculative organisms or as concepts for worldbuilding, sometimes linked to themes of memory, aging, or regenerative medicine. The term's meaning can vary between works, making it a loose umbrella for various imaginative ideas rather than a single, canonical entity.