A bizarre ancient life-form, considered to be the first giant organism to live on land, may belong to a totally unknown branch of the tree of life, scientists say.

Scientists have debated where Prototaxites belong in the tree of life for over a century, but now a new study suggests it ...

Chemical analysis suggests the 400-million-year-old fossil Prototaxites was neither plant, animal or fungus – hinting at a ...

A bizarre ancient life-form, considered to be the first giant organism to live on land, may belong to a totally unknown branch of the tree of life, scientists say. These organisms, named Prototaxites, ...

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The giant sequoia is a snow tree, Sillett says ... of cambium that flowed between trunk and limbs like a river of life. I thought: What an amazing place. Then I thought: What an amazing creature.

But over the last several months, those uplifting photo captions have been slowly replaced with eulogies for the tree and reflections on its life.“I visited the Tree of Life today for the first ...

Although most biologists would argue that viruses are not alive, some argue that viruses should be included in the tree of life. All organisms, they contend, should be divided into ribosome ...