Canada Fossil Site Yields 100-Plus Ediacaran Finds, Pushing Animal Origins Back 5-10 Million Years
Updated
Updated · City Life Org · May 27
Canada Fossil Site Yields 100-Plus Ediacaran Finds, Pushing Animal Origins Back 5-10 Million Years
2 articles · Updated · City Life Org · May 27
More than 100 fossils from Canada’s Northwest Territories show White Sea Ediacaran animals lived about 567 million years ago, extending evidence for animal movement and sexual reproduction by 5-10 million years.
The site in the Mackenzie Mountains includes six groups never before seen in North America, among them Dickinsonia, Funisia, Kimberella and Eoandromeda, according to the Science Advances study led by the American Museum of Natural History and Dartmouth.
Those fossils also place the White Sea assemblage in North America for the first time and overlap it with the older Avalon interval, challenging the standard timeline that separated the two assemblages.
Deeper-water rock layers at the site suggest early animals may have originated offshore in relatively stable marine settings before spreading into shallower seas; hundreds of feet of overlying rock could hold more fossils.
Is a 567-million-year-old fossil the key to our earliest animal ancestor?
Did the first complex animals evolve in the deep ocean, not sunlit shallows?
Deep-Sea Fossils in Canada Reveal Early Emergence of Animal Movement and Sexual Reproduction
Overview
A groundbreaking fossil discovery in Canada’s MacKenzie Mountains has revealed a remarkable site containing Ediacaran biota—soft-bodied organisms that lived over 500 million years ago. This find offers unprecedented insight into the earliest evolution of complex animal life on Earth. Scientists were surprised by the timing of these fossils, as the evidence pushes back the origins of animal movement and sexual reproduction by 5–10 million years. This re-evaluation of the timeline provides crucial new perspectives on when key biological functions first developed, fundamentally changing our understanding of how and when complex life began.