Top 10 Prehistoric Creatures that I Think are Way Cooler Than a Tyrannosaurus Rex

The T-Rex is cool and all, but my god is it overrated. I see it everywhere I go. That's why I've made a list of creatures that are (in my opinion) much cooler than a T-Rex. You're gonna be seeing a lot of creatures from the Paleozoic Era on here. I like them more because of how cool they look or how old they are.
The Top Ten
1 Opabinia

Way cooler looking than a T-Rex.

2 Anomalocaris
3 Arthropleura
4 Pterygotus
5 Dimetrodon
6 Shark The tiger shark is a species of requiem shark and the only extant member of the genus Galeocerdo. It is a large macropredator, capable of attaining a length over 5 m. Populations are found in many tropical and temperate waters, especially around central Pacific islands.

The reason I think a shark is cooler than a T-Rex is because it's been around longer before the dinosaurs have been.

7 Coelacanth Coelacanths are lobe-fin fish that have lived more than 70 million years ago. Two kinds are still around today, swimming in the deep waters of the Indian Ocean.

Another fish that has been around long before the dinosaurs.

8 Pteraspis
9 Trilobite
10 Spriggina