A 500 million-year-old microscopic, spiny creature with a mouth but no anus had puzzled scientists.
Scientists say they have solved an evolutionary mystery involving a 500 million-year-old microscopic, spiny creature with a mouth but no anus.the tiny fossil of this sack-like marine beast could be humans' earliest-known ancestor.
One "intriguing option", she said, is that an even earlier ancestor of this whole group did not have an anus, and that Saccorhytus evolved after that. When scientists looked in more detail - using powerful X-rays to examine the 1mm creature closely - they realised that these were actually the base of spines that had snapped off.
Belgique Dernières Nouvelles, Belgique Actualités
Similar News:Vous pouvez également lire des articles d'actualité similaires à celui-ci que nous avons collectés auprès d'autres sources d'information.
Castroneves on 2022: Difficult to teach an old dog a new trickFour-time Indy 500 winner Helio Castroneves says returning to full-time IndyCar racing two years into the aeroscreen era has left him playing catch-up but positive about the future.
Lire la suite »
Seven-year-old boy cycles London to Paris raising £35,000 in memory of his dad'Cycling makes me feel good': Rupert Brooke completed the 200-mile challenge in aid of the Children's Bereavement Centre to support other children who have lost parents
Lire la suite »
Arrest made after fatal stabbing of 87-year-old man on mobility scooterA 44-year-old man was arrested at an address in Southall, west London, in the early hours of Thursday
Lire la suite »
Young watch almost seven times less TV than over-65s - OfcomThe average 16 to 24-year-old watches TV for 53 minutes a day compared with nearly six hours for over-65s.
Lire la suite »