Unknown to science sea monster found in the US. While researchers can't even determine was whether the body fanciful forms and the impressive size of the animal or plant.

Found in the United States mysterious fossil of a creature that resembles a sea monster that had baffled scientists. Researchers still can't even determine whether the creation of an animal or marine plant, writes LiveScience.com.

Mysterious remains hitherto unknown to science organism paleontologists found in Cincinnati. Being a length of 2.1 m wide and 1 m dwelt 450 million years ago in shallow marine. Yet to determine its type is not possible. Among the versions that scientists consider: a huge algae, protozoa living organism or a jellyfish.

"We really can't understand exactly how it looked in life. At first I thought it was overgrown with algae, which has acquired some bizarre form" - told one of the authors of the findings, a geologist from the University of Cincinnati David Meyer.

Paleontologist Bruce Lieberman from the University of Kansas has also not able to say exactly what is the fossil of a creature. "It might fragments of corals, or the remains of bryozoans (ancient invertebrate animals) or, possibly, sponges" - suggested scientist.

However, in any case, found the remains hardly belong to the largest animal, says Lieberman. "I'm not saying it's impossible, but I believe, is extremely unlikely. It happens, but rarely" - said paleontologist.

Let's remind, recently paleontologists stumped another unknown to science creature that lived in the prehistoric ocean 500 million years ago. The fossilized remains unseen create dug up in the famous formations Besides shale, located in the Canadian rocky mountains.

Incredible creation looks like a flower. On your outstretched leg is the oval formation resembling the Bud, so paleontologists among themselves called it ' Tulip", and the official name assigned Siphusauctum gregarium. At length the ancient inhabitant of the ocean is just 20 centimeters. But, presumably, it was a primitive animal and not a plant. It is possible that the strange creature was both that, and another.

Most scientists struck way of eating Siphusauctum gregarium. In a Bud are small holes through which the creature was soaked up the water and then filtered it. Nutrients were left to digest, and the water came out the back. This type of food was not typical for any of the known animal Cambrian period.