Ọ ga-ekwe omume na nna nna nke vertebrates niile dị ndụ nwere ụzọ abụọ nke photosensory organs n'elu isi ya, nke yiri nhazi na lampreys nke oge a. Ụfọdụ azụ Devonian ndị nwụrụ anwụ nwere ụzọ abụọ nke parietal foramina na okpokoro isi ha, na-atụ aro nna nna nna nke anya parietal. Anya parietal na gland pineal nke tetrapods dị ndụ nwere ike ịbụ ụmụ nke akụkụ aka ekpe na aka nri nke akụkụ a, n'otu n'otu. N'oge mmepe nke embryonic, anya parietal na akụkụ pineal nke lizards nke oge a na tuataras na-esite n'otu akpa nke e guzobere n'ụbụrụ. Anya parietal nke ọtụtụ vertebrates nke oge a na-akwado site na nhazi nke ihe owuwu nke nwere otu ụdị nke na-eme ka ọ bụrụ otu gland pineal na-etolite n'ime gland pineal nke na-etolite n'ime ụmụ nnụnụ nke oge a.
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