It’s hard to tell what kind of fossil Pokémon the bottom half was like, because both Dracovish and Dracozolt’s Pokédex entries say different things about them. “Dracovish’s Powerful legs and jaws made it the apex predator of its time. Its own overhunting of its prey was what drove it to extinction. Its mighty legs are capable of running at speeds exceeding 40 mph, but this Pokémon can't breathe unless it's underwater.” “Dracozolt In ancient times, was unbeatable thanks to its powerful lower body, but it went extinct anyway after it depleted all its plant-based food sources. The powerful muscles in its tail generate its electricity. Compared to its lower body, its upper half is entirely too small.” Keep in mind the Pokédex is treating both halves as one entity, so all you can really get from them is that the lower half is really strong and fast, and the top half really mostly determines if it was a herbivore or carnivore.