We Actually Have a Third Eye

Researchers studying 500 million-year-old Cambrian fossils have uncovered evidence suggesting that some of the earliest known vertebrates possessed four eyes.

This video explores:
• How melanosomes were used to identify fossilised retinas
• The decade-long research process behind the discovery
• What the pineal complex reveals about eye evolution
• And what this means for vertebrate evolutionary history

#paleontology #science #nature #animals #animalbehavior #discovery
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A few people have asked if I have a Patreon, so I've set one up.

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Patreon: https://patreon.com/ACuriousBirb?utm_medium=unknownu0026utm_source=join_linku0026utm_campaign=creatorshare_creatoru0026utm_content=copyLink

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Sources:
https://www.nanoscience.com/blogs/how-does-coating-thickness-affect-sem-imaging/
https://www.nature.com/articles/s41598-023-31089-7#rightslink
https://www.nature.com/articles/nature01264
https://www.nature.com/articles/d41586-025-04096-z
https://www.nature.com/articles/s41586-025-09966-0.epdf?sharing_token=mzZhV8KgSeaHFF4ksNH5_tRgN0jAjWel9jnR3ZoTv0PcrPAX16Vw9N4DyaF57_gF20Qd2_rJQK2gWNYI0A6x41YZBaGGINRXFzx_IkYmvfQ9eNO8bhpdqgcpBtfeD7iNezl8tGhZhu75Ey2nB8iYtpxZDfFMU9e5yPPyXx8CgZwZDa9BuFxjxicnQDGAQOoA34ZsdAEwiYsRvaa01zhkOVKHvcKm6gwr21BxwFqgDHRhEpDDyw7HNAXQn3soti8a4JPugWA8luUc0_ksKSPBReMW4MFzH6B0tl2BvCWMfsW_YhjLEwocnC59Ap1cD1lJP5XvuKv1QS2zhEwZpelp8IBuL_ZWFnLa3vgxOq7jo29HU16m1yAANMIjkqG9OnB8DilTLfk5ezCKmfBEhNCqaHSdjEUgIe-G-Q4VfChDvOw%3Du0026tracking_referrer=www.smithsonianmag.com
https://www.researchgate.net/figure/Chengjiangocaris-kunmingensis-from-the-early-Cambrian-Canglangpuan-Hongjingshao_fig3_235749893
https://www.science.org/doi/10.1126/science.abm2708

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