New Primordial Protozoan Species Is Not in Any Known Kingdom of Life
A tiny microorganism found in Norwegian lake sludge may be related to the very oldest life forms on this planet, a possible modern cousin of our earliest common ancestor. It is not a fungus, alga, parasite, plant or animal, yet it has features associated with other kingdoms of life. It could be a founding member of the newest kingdom on the tree of life, scientists said. Life on Earth is divided into two main groups, the prokaryotes and the eukaryotes. Prokaryotes are simple life forms, with no membranes or cell nuclei; this group includes bacteria and archaea. Eukaryotes, which include humans, animals, plants, fungi and algae, have cell membranes and nuclei. This new organism is a eukaryote. More specifically, it's an algae-eating protozoan, a type of creature that have been known to science since the Civil War but which have lacked genetic studies because they're difficult to culture. Researchers in Norway were...