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Pentecopterus
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Megalograptidae
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Fossils show big bug ruled the seas 460 million years ago | AP News
https://apnews.com/fossils-show-big-bug-ruled-the-seas-460-million-years-ago-5d0225573f534c35a50fb5734054f4e1
Pentecopterus
Pentecopterus - Wikipedia
https://en.wikipedia.org/wiki/Pentecopterus
Pentecopterus
This giant salamanderlike creature lived 40 million years before dinosaurs | AP News
https://apnews.com/article/giant-prehistoric-salamander-tetrapod-bf56d8dfbd2e48908a87b32254f04b8d
Dinosauria
Pentecopterus