Trilobites (never went extinct)

Level 3 – Deep Web
MYSTERY

Trilobites went extinct about 250 million years ago. Some have claimed that trilobites have been found in the deep sea in modern times.

LINKS
https://en.wikipedia.org/wiki/Trilobite#:~:text=The%20last%20extant%20trilobites%20finally,for%20almost%20300%20million%20years.

https://www.express.co.uk/news/science/637895/Mind-blowing-discovery-Fossils-of-prehistoric-sea-creature-found-on-Mars