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Scientists Unveil Mystery Surrounding 500 Million-Year-Old Critter Without Anus_我的网站

一 |     Researchers from China and the UK have solved the mystery surrounding Saccorhytus coronaries – a millimeter-long spiny creature that was found in 2017 and believed to have inhabited oceans 500 million years ago. The veil of mystery over the critter persisted for years, as the scientists could not locate the creature’s anus. Turns out – they should not have even tried.,The critter was originally determined to be a member of a deuterostomes group of animals - the ancestors to the modern vertebrates (including humans). However, scientists' latest research suggests that it actually belongs to another group called ecdysozoans – the predecessors of the modern spiders and various insects. As it turned out, the whole mishap happened over the creature's anus – or rather lack thereof.,Ecdysozoans normally have an anus and hence the critter was initially ruled not to belong to them. But, upon closer discovery using x-rays, scientists saw it resembles ecdysozoans internally more than the ancestors of the vertebrates.,Like them, Saccorhytus has a large mouth and also features tiny holes around it that served as bases for spines that kept the critter anchored in one place. Those holes also served as a source of confusion as they were originally believed to be gills – another mark of the proto-vertebrates.,'Ugliest I've Ever Seen': Fisherman Shares Pic of Mysterious Creature He Found in Australia29 June, 13:17 GMT,As to Saccorhytus' absence of anus, scientists are yet to find out what happened to it. One theory suggests that there was an even earlier representative of ecdysozoans that has not been discovered, but did not have an anus.,Another theory goes that Saccorhytus did not actually need one.,"It could be that it lost it during its own evolution - perhaps it didn't need one because it could just sit in one spot with one opening for everything," Emily Carlisle, one of the researchers, said.。    　　中新社北京8月25日电 (记者 刘文文)中国商务部新闻发言人、副部长兼国际贸易谈判副代表凌激25日在北京表示，中国在共建“一带一路”国家设立境外企业2.2万家。　　凌激在当日国新办举行的发布会上表示，近年来中国对外投资发展引人注目。一方面，对外投资规模稳居全球前列，并呈现出多元化的投资趋势。

二 | 2025年，中国对外投资流量是2135.8亿美元，比上年增长11.1%，对外投资存量已达到3.4万亿美元，连续9年保持在全球前三，占全球投资的比重增加到7.4%。

三 | 　　他说，对外投资的行业覆盖了国民经济的18个行业门类，过去传统的投资主要集中在租赁和商务服务、批发零售、制造业和金融这四个领域，近年来逐步向绿色低碳、数字经济和绿色矿产等领域稳步拓展。　　另一方面，互利共赢成效显著。

四 | 截止到2025年底，中国在境外设立的企业有5.8万家，遍布189个国家和地区，为东道国年均创造就业岗位超过200万个。

五 | 凌激说，中国企业在海外积极融入全球和区域经济，不仅带动了自身发展，提升了竞争力，也为东道国产业发展和全球产供链作出了贡献。　　此外，“一带一路”合作成果丰硕。凌激表示，2025年中国企业对共建“一带一路”国家的直接投资达到460.5亿美元，占当年对外投资流量的21.6%。中国在共建“一带一路”国家设立的境外企业是2.2万家，直接投资存量4072.5亿美元。“一带一路”为中国企业对外投资搭建了广阔平台，实现了“共商、共建、共享”的良好格局。

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