Cool concept, but over-dramatization & occasional lack of logical consistency spoiled it for me.
Story summary.Dinosaurs died out because of a fatal mutation introduced by alien visitors from Tau Ceti system 65 million years ago. They were here for a stopover, & played a game. They altered the physical structure of the molecule that is the "respiratory enzyme Cytochrome oxidase" (in dinosaur biochemistry) to geometrically resemble the star pattern that includes Sol, Tau Ceti, & their neighborhoods - to fatal results for the animals!
Fact sheet.First published: Unknown.
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