By Victoria Gill Science reporter, BBC News Image source, P Donoghue et al/University of Bristol Image caption, Powerful X-ray scanning strategies exposed the 1mm animal in charming information Scientists state they have resolved an evolutionary secret including a 500 million-year-old tiny, spiny animal with a mouth however no rectum. When it was found in 2017, it was reported that the small fossil of this sack-like marine monster might be humanbeings’ earliest-known forefather. The ancient animal, Saccorhytus coronarius, was tentatively positioned into a group called the deuterostomes. This is the group of animals that consistsof vertebrates. A brand-new researchstudy now recommends Saccorhytus must be put into an totally various group of animals. A group of scientists in China and the UK carried out a extremely detailed X-ray analysis of the animal, and concluded that it belongs to a group called the ecdysozoans – forefathers of spiders and pests. One source of this evolutionary confusion was the animal’s absence of an rectum. Emily Carlisle, a scientist who studied Saccorhytus in information, described to BBC Radio 4’s Insi
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