The prehistoric dragons were a species of dragon, large flying reptiles, that lived during the Cretaceous period. It was the land relative of the sea serpent, the marine dragon. They are the first species of dragons theorized to exist.

Classification: Large bipedal flying reptile

Powers and Abilities; Superhuman Physical Characteristic, peak human speed on land and superhuman speed while flying, sound manipulation(Can produce a loud piercing cry that can stun opponents), flight(via wings and the flight bladder), enhanced senses(Their vision, hearing, and a smell are superior to that of humans), fire breath, natural weaponry(teeth and claws), large size(type 0), surface scaling, resistance to fire manipulation

Attack Potency: Wall level(A young dragon, younger than a juvenile, was able to fight evenly with a T-rex. A fully grown adult was easily able to scar Tyrannosaurs skull with its talons and its flame)

Speed: Peak Human on land

Lifting Strength: Class 5 to Class 10(Roughly comparable to a T-rex)

Striking Strength: Wall Class(Dragons can harm each other and often fight for territory)

Durability: Wall level(Survived attacks from other dragons)

Stamina: Superhuman(Can fly multiple miles during dogfights or while hunting without showing fatigue)

Range: Extended melee range via size, several meters with fire breath

Standard equipment: Plutonium

Intelligence: Animalistic

Weakness: If they eat too much or run out of gas in their flight bladder, they cannot fly(The first issue however, is shoveled by the dragons instinctively vomiting up their last meal to lighting themselves)

Notable Attacks/Techiques:

Piercing Cry: Produces a powerful screech that can be heard for miles, and is strong enough to harm and temporarily stun a T-Rex.

Flight Bladder: When a dragon eats and digest food, it creates specialized Hydrogen and Methane gas that is stored in the flight bladder. This grants the dragon extra life that is needed to fly, it used properly. This gas is also used to fuel its signature weapon, fire breath.

Fire Breath: By storing plutonium in their bodies, dragons can create the spark needed to ignite gas released from the flight bladder. This produces a violent and concentrated blast of fire from the reptile mouth.