Museum Fossils Push Sexual Reproduction Back 10 Million Years to 567 Million
Updated
Updated · The Times · May 20
Museum Fossils Push Sexual Reproduction Back 10 Million Years to 567 Million
2 articles · Updated · The Times · May 20
567-million-year-old Funisia fossils from Canada’s Mackenzie Mountains provide the oldest fossil evidence of sexual reproduction, extending the timeline by five to 10 million years, researchers at the American Museum of Natural History said.
More than 100 fossils were found at the remote site, including Dickinsonia and Kimberella, showing early animals were already moving, feeding and reproducing sexually in the Ediacaran period.
The assemblage came from deeper-water settings, challenging the long-held view that complex animal life first evolved in shallow coastal seas before spreading outward.
Six fossil groups had not previously been found in North America, suggesting these early animals were more geographically widespread and making the site a key window into how large, complex animal life emerged.
If complex animals existed long before the Cambrian, what truly caused the famous 'explosion' of life?
Are we finding life's true origins, or just the rare fossils that managed not to rot away?
Deep Origins: How 567-Million-Year-Old Mackenzie Mountains Fossils Are Rewriting the Story of Complex Life on Earth
Overview
A major fossil discovery in Canada’s Mackenzie Mountains, dating back 567 million years, is changing our view of how complex life began on Earth. For years, scientists believed complex animals first evolved in shallow coastal waters, but the Mackenzie fossils show these creatures actually lived in deeper ocean environments. This suggests that evolutionary innovation may have started in the deep sea, where stable conditions like steady temperature and oxygen levels could have helped early animals thrive. Ongoing research at this site is filling a crucial gap in the fossil record and reshaping our understanding of early animal evolution.