Lately, scientists and professors have found multiple variations of many species of pokémon, and Tyrantrum is't an exception.
As fossilmaniacs and professors investigated that enigmatic pokémon (through clonning and fossil analyzing), they found out that there are different kinds of Tyrantrum deppending on the region where it is found.
At first they thought that all those variations were specialiced species of the same genera, but genetic analysis shows that those variations are totally different generes. The question is why they share so many caracteristics without being closely related. Other investigations showed that all them were top predators of their habitats, so the most accepted theory is that through convergent evolution those variations aquired characteristics that showed their superiority and that they were the rulers of their territories.
-Common (Tyrantrum rex, top left): it have the strongest bite which uses to crunch any kind of armor. It likes to fest on anything that moves. It's the most famous and the favourite of most people.
-Shredder (Tyrantrare maximus, bottom left): its bite is the weakest, but its teeth are the sharpest and its skull the sturdiest. It attacks using its jaws like an ax while it hold its prey with its clawed arms.
-Hydric (Tyrantsail aegipticus, top right): it possess realy narrow and long jaws that are useful to catch water type pokémon. It also have al great dorsal fin that along its membraned feet are useful for an aquatic lifestyle.
-Charger (Tyrantaurus sastrei, bottom right): it's the one with the smallest arms but also the faster one. Its long and powerful legs alows it to run at high speeds and charge its prey with its horns and its strong head.
And there it goes
As you may know, the pokémon vaiatrions meme is quite popular right now and it's an ashame that there are so little variations of one of the most epic pokémon, so I made my own variations
had the same idea but he did it in a more realistic way ( ryuukiba.deviantart.com/art/Ty…
Maybe later I'll update a better pic or even more variations
Tyrantrum is owned by GameFreak
Edit: scanned update!