{"id":126978,"date":"2024-09-03T15:02:43","date_gmt":"2024-09-03T15:02:43","guid":{"rendered":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/09\/03\/despite-new-clues-this-ancient-fish-has-stumped-scientists-for-centuries\/"},"modified":"2024-09-03T15:02:43","modified_gmt":"2024-09-03T15:02:43","slug":"despite-new-clues-this-ancient-fish-has-stumped-scientists-for-centuries","status":"publish","type":"post","link":"https:\/\/news.talkwithrattan.com\/index.php\/2024\/09\/03\/despite-new-clues-this-ancient-fish-has-stumped-scientists-for-centuries\/","title":{"rendered":"Despite new clues, this ancient fish has stumped scientists for centuries"},"content":{"rendered":"<div style=\"text-align:center\"><\/div> \r\n<br><div data-component=\"video-embed\">\n\t\t\t\t\n\n\n\n\n<p>It wasn\u2019t an ancient boomerang. It was, in fact, a fish \u2014 albeit unlike any known today. Beyond that, nobody\u2019s quite sure what to make of <em>Pegasus volans<\/em>.<\/p>\n\n\n\n<p>The fish\u2019s ribbonlike body, known from two fossils from a 50-million-year-old site in northern Italy, has thwarted efforts to pinpoint the animal\u2019s place on the tree of life for more than two centuries. In a new analysis posted August 23 on bioRxiv.org, a pair of researchers says <a href=\"https:\/\/www.biorxiv.org\/content\/10.1101\/2024.08.19.608581v2\" target=\"_blank\" rel=\"noopener\">even the most prominent ideas so far are incorrect<\/a> \u2014 enough so to rename the extinct animal.<\/p>\n\n\n<aside class=\"sn-conversion rich-text rich-text--with-sidebar\">\n<style><![CDATA[\n.email-conversion {\n  border: 1px solid #ffcccb;\n  color: white;\n  margin-top: 50px;\n  background-image: url(\"\/wp-content\/themes\/sciencenews\/client\/src\/images\/cta-module@2x.jpg\");\n  padding: 20px;\n  clear: both;\n}\n\n]]><\/style>\n\n\n\n                        <style class=\"is-layout-flow 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none;\n}\n\nform.zephr-form-content {\n    opacity: .9;\n}\n\nlabel.zephr-form-checkbox-label {\n    font-size: 1.2rem;\n    font-weight: bolder;\n}\n\n.zephr-form-custom-text > h4 {\n    color: black !important;\n}\n\nbutton.zephr-form-button {\n    background: #d4441f !important;\n    font-weight: bold !important;\n    text-transform: uppercase !important;\n}\n\nlabel.zephr-payment-form-checkbox-label {\n    color: white;\n    font-size: 1.6rem;\n}\n\n.zephr-form-content {\n    background:#2f537f;\n    \n}\n\n.zephr-payment-form-custom-text {\n    margin-top: .2rem;\n}\n\n.zephr-payment-form-checkbox-label {\n    display: flex;\n    align-items: center;\n    font-family: var(--zephr-typography-body-font), var(--zephr-typography-body-fallbackFont);\n    color: white;\n    font-weight: bold;\n}]]><\/style>\n                        \n                        \n<\/aside>\n\n\n<p>\u201cWe know what it isn\u2019t,\u201d says Donald Davesne, a paleontologist at the National Museum of Natural History in Paris, \u201cbut it\u2019s unclear what it could be.\u201d<\/p>\n\n\n\n<p>The creature has shared the genus name <em>Pegasus <\/em>with seamoths \u2014 flat, armored snout-nosed fish \u2014 since Italian naturalist Giovanni Serafino Volta first described it in 1796. \u201cThey have nothing in common,\u201d Davesne says. \u201cI don\u2019t know what this guy was thinking.\u201d<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><figcaption class=\"wp-element-caption\"><span class=\"caption wp-caption-3143066\">The two known fossil specimens of <i>P. volans<\/i> (one shown) measure just 3.3 and 5.6 centimeters long. But both lack a tail end, which could contain crucial clues about where the animal fits on the evolutionary tree of life.<\/span><span class=\"credit wp-credit-3143066\">Donald Davesne<\/span><\/figcaption><\/figure>\n\n\n\n<p>Davesne and paleontologist Giorgio Carnevale of the University of Turin in Italy examined the fossilized fish, each no longer than six centimeters, using a stereomicroscope and photographs taken under ultraviolet light. Based on the specimens\u2019 skeletal anatomy and fin size, the duo also ruled out a close kinship with oarfish, as some paleontologists had recently suggested.<\/p>\n\n\n\n<p>Instead, Davesne and Carnevale note similarities to the larvae of modern cusk-eels and other <a href=\"https:\/\/www.sciencenews.org\/blog\/wild-things\/lazy-sunfish-are-actually-active-predators\">fishes in the group Teleostei<\/a>, including a long dorsal-fin ray that extended above the head (<em>SN: 5\/1\/15<\/em>). The fish\u2019s tiny abdomen suggests its guts probably had to dangle in a pouch below the body, also like teleost larvae. <\/p>\n\n\n\n<p>But the fossil fish themselves don\u2019t appear to be larvae, the researchers say, due to their relatively large bodies and fully ossified skeletons. Still, the fossils could represent an early appearance of these larval traits, perhaps as part of the explosion of spiny-rayed fish diversity after the Cretaceous-Paleogene mass extinction roughly 66 million years ago, Davesne says.<\/p>\n\n\n\n<p>He cautions that confirming any relationship would require more information \u2014 like the tail end of the fish, which is missing from both fossils. \u201cOne day, someone will find another specimen that is even better preserved,\u201d Davesne says. \u201cThat would be neat!\u201d<\/p>\n\n\n\n<p>With its family ties unclear, the duo says, the fish needs a new genus name. Following Carnevale\u2019s naming habit, Davesne has chosen a moniker in honor of a late musician he knew personally. It will be revealed once the paper is formally published.<\/p>\n\n\n\n\t\t\t<\/div>\r\n<br>\r\n<br><a href=\"https:\/\/www.sciencenews.org\/article\/ancient-fish-pegasus-volans-new-clues\">Source link <\/a>","protected":false},"excerpt":{"rendered":"<p>It wasn\u2019t an ancient boomerang. It was, in fact, a fish \u2014 albeit unlike any known today. Beyond that, nobody\u2019s quite sure what to make of Pegasus volans. The fish\u2019s ribbonlike body, known from two fossils from a 50-million-year-old site in northern Italy, has thwarted efforts to pinpoint the animal\u2019s place on the tree of [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":126979,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"tdm_status":"","tdm_grid_status":"","fifu_image_url":"https:\/\/i0.wp.com\/www.sciencenews.org\/wp-content\/uploads\/2024\/08\/082724_sc_larva-fish_inline.jpg?resize=680%2C393&ssl=1","fifu_image_alt":"","footnotes":""},"categories":[606],"tags":[8221,16622,1070,5382,601,52851],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/126978"}],"collection":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/comments?post=126978"}],"version-history":[{"count":1,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/126978\/revisions"}],"predecessor-version":[{"id":126980,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/posts\/126978\/revisions\/126980"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media\/126979"}],"wp:attachment":[{"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/media?parent=126978"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/categories?post=126978"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/news.talkwithrattan.com\/index.php\/wp-json\/wp\/v2\/tags?post=126978"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}