Some alien-like sea creatures that are oddly mushroom-shaped were found in the depths of the Tasman Sea in Australia.

Two species of these sea creatures were observed by scientists, but much as they try, they could not be placed under any current classification of living things.

Some scientists say that these creatures could be "living fossils" from the pre-Cambrian period, but further studies are still needed to confirm this.

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According to Jean Just of the Natural History Museum of Denmark, they have confirmed that they have discovered an animal which they could not place in any current animal classification system.

The creatures have been called Dendrogramma by Just and the team that found and collected them at depths of 400 to 1000 meters in the southeast Australian continental slope, just east of Bass Strait.

The animals are made up of an outer skin and an inner stomach that are separated by a jelly-like material. The name Dendogramma was given representing the discs of its digestive system.

The creatures are measured at 1.5 centimeters tall and about 1 centimeter wide and is distinctly shaped like a mushroom. Each one also has a combined mouth and anus on its "stalk" which could be pointing down on the ocean floor's sediments.

The scientists have collected several of the species, and two of them were named as new genera called Dendrogramma enigmatica and Dendrogramma discoides under the new family Dendrogrammatidae.

The researchers link the new genera and species to be related to the Cnidaria group where jellyfish fall under or another primitive family group called Ctenophora.

The Dendrogramma may possess the jellylike physical qualities of these groups but they lack the stinging cells and the tentacles.

The researchers have described the two new genera of Dendrogramma in the journal Plos One.

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