Internet

Oldest fossils of animals may be in Canada rocks, study says

WASHINGTON — A Canadian geologist may have found the earliest fossil record of animal life on Earth, according to a report published Wednesday in the journal Nature. Around a billion years ago, a region of northwest Canada now defined by steep mountains was a prehistoric marine environment where the remains of ancient sponges may be preserved in mineral sediment, the paper says.

jarritos mexican soda kFEb8yigiuQ unsplash 1629164995785 1629165005469

Geologist Elizabeth Turner discovered the rocks in a remote region of the Northwest Territories accessible only by helicopter, where she has been excavating since the 1980s. Thin sections of rock contain three-dimensional structures that resemble modern sponge skeletons. “I believe these are ancient sponges only this type of organism has this type of network of organic filaments,” said Joachim Reitner, a geobiologist and expert in sponges at the Germany’s University of Gottingen. The latter was not involved in the research. The dating of adjacent rock layers indicates the samples are about 890 million years old, which would make them about 350 million years older than the oldest undisputed sponge fossils previously found.

“What’s most stunning is the timing,” said Paco Cardenas, an expert on sponges at Sweden’s Uppsala University, who was not involved in the research. “To have discovered sponge fossils from close to 900 million years ago will greatly improve our understanding of early animal evolution.”

Many scientists believe the first animal groups included soft sponges or sponge-like creatures that lack muscles and nerves but have other features of simple animals, including cells with differentiated functions and sperm.

Molly Aronson

Molly Aronson is a 26-year-old government politician who enjoys bowling, running and jigsaw puzzles. She is creative and exciting, but can also be very greedy and a bit greedy.She is an australian Christian who defines herself as straight. She has a post-graduate degree in philosophy, politics and economics. She is allergic to grasshoppers.

Related Articles

Leave a Reply

Your email address will not be published.

Back to top button