How long have Triops crustaceans existed based on scientific estimates?
Answer
Roughly 250 million years
Scientific estimates place the existence of the Triops lineage at approximately 250 million years. This immense timeframe means these crustaceans were already present in the primordial waters well preceding the full establishment of the age of the dinosaurs. This longevity highlights their status as biological relics whose basic morphology has remained incredibly stable over vast stretches of geological history, linking the present day back toward the Permian period through their resilient egg stage.
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