Giant Orthocone
exists 470 to 440 million years ago

It is a carnivore up to 11metres long

It has no fins and no tail

Along the underside of the cone ran a flexible, fleshy tube

Moved along by forcing water out in the opposite direction to where it wanted to go

It ate fish, arthropods like sea scorpions

Seized its prey using its tentacles and beak-like mouth to rip apart

Liopleurodon

Lived at Mid to Late Jurassic

A marine reptile, 25 metres long

An omnivore cruised silently throught the shallow seas, propelled by its flapping flippers

It was a hunter.

Its long jaws and rows of needle-sharp teeth would have made marine crocodiles, the giant fish Leedsichthys, ichthyosaurs and even other piliosaurs vulnerable to attack..

It could smell its prey from some distance away..

Despite its needs to breathe air, spent its entire life at sea and was unable to leave water

It breeds at a shallower water and may give birth to its young alive..

Stethacanthus
It is a cartiliginous fish of 0.7 to 2 metres long

A carnivore lived 370 to 345 million years ago

Resembled the modern sharks to an extent, except for its outrageous dorsal fin with the shape of an ironing board which found only in males

The top of the fin is covered with rough, tooth-shaped scales that match a patch of skin on the Stethacanthus's mouth

this creature tend to patrol shallow coastal waters on the lookout for food

Ate small fish, crustaceans, and cephalopods

It migrate and return to particular places to mate and give birth

it swim fast but could not quickily enough to evade a hungry Dunkleosteus

Dunkleosteus
Known for its speed, powerful and happy to eat most of the things...

A placoderm fish of 8 to 10 metres

A carnivore which exist at 370 to 360 million years ago

Probably have no predator

It was streamlined and shark-like

Lacked true teeth and had 2 long bony blades that could snap and crush almost anything

Had dark colours on its back and was slivery on its belly

Ate sharks, fish and even creatures of its own kind

Consequently, it suffered from indigestion which is seen at its fossils often associated with regurgitated, semi-digested remains of fish

On of the earliest animal exists as pairs of male and female have to mate physically..

Wow... isn't this creatures frightening??? Well, don't worry...they are extinct... Hope you enjoy!