Die ältesten bekannten Wirbeltiere der Welt hatten zwei Augenpaare
https://newatlas.com/biology/the-worlds-oldest-known-vertebrates-had-two-pairs-of-eyes/
Die ältesten bekannten Wirbeltiere der Welt hatten zwei Augenpaare
https://newatlas.com/biology/the-worlds-oldest-known-vertebrates-had-two-pairs-of-eyes/
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some lower tetrapods still have a parietal “eye” a third light sensing organ on top of their heads. some insects, like bees, have 5 “eyes” two primary and 3 ocelli. In humans the structural homolog of the parietal eye was turned into the pineal gland.