Alien-like long, ridged organisms are now classified as the oldest known animals on the planet. The Dickinsonia, approximately 558 million years old, puzzled scientists for decades, but fat molecules finally solve the mystery.
More than 500 million years ago, funny-looking Ediacaran organisms dominated the planet's oceans. The nature of these creatures have been a long-standing mystery, but now scientists say they are actually Earth's first animals.
Researchers have been studying the nature of life on Earth and the role of biodiversity. Given the current state of slow biodiversity loss as a variety of species populations are gradually diminishing toward the poles, scientists from the University of Chicago, University of California, Berkeley, and University of California, San Diego try to reconcile two competing ideas that explain this phenomenon in their study published in The American Naturalist.
New fossil evidence show that the rise of ecological engineers during the cambrian explosion may have change the ecological aspects of Earth causing the first mass extinction.