{"id":1921,"date":"2014-06-11T18:33:38","date_gmt":"2014-06-11T23:33:38","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=1921"},"modified":"2014-06-14T18:23:17","modified_gmt":"2014-06-14T23:23:17","slug":"new-fossils-provide-a-view-to-a-gill","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/new-fossils-provide-a-view-to-a-gill\/","title":{"rendered":"New fossils provide \u2018a view to a gill\u2019<img src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/01\/canada_flag_icon_small.gif\">"},"content":{"rendered":"<div id=\"attachment_1879\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/06\/Caron1.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-1879\" class=\"size-full wp-image-1879\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/06\/Caron1.jpg\" alt=\"Artist\u2019s impression of Metaspriggina walcottii, a primitive fish that lived about 500 million years ago. A new set of well-preserved fossils suggests that the species provides some of the earliest evidence of the structures that would one day become jaws. (Image credit: Marianne Collins) \" width=\"400\" height=\"343\" srcset=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/06\/Caron1.jpg 400w, http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/06\/Caron1-300x257.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-1879\" class=\"wp-caption-text\">Artist\u2019s impression of Metaspriggina walcottii, a primitive fish that lived about 500 million years ago. A new set of well-preserved fossils suggests that the species provides some of the earliest evidence of the structures that would one day become jaws. (Image credit: Marianne Collins)<\/p><\/div>\n<p><span style=\"color: #000000;\">New fossils of an ancient fish from Marble Canyon in British Columbia\u2019s Kootenay National Park have provided insight into how jaws evolved. The remains represent the best-preserved fossils of\u00a0<\/span><span style=\"font-style: italic; color: #000000;\">Metaspriggina walcottii<\/span><span style=\"color: #000000;\">, a 500 million-year-old species that is among the oldest known fish.<\/span><\/p>\n<p><span style=\"color: #000000;\">Based on the shape of features called \u2018branchial bars\u2019 associated with the gills, the authors suggest that <\/span><span style=\"font-style: italic; color: #000000;\">Metaspriggina<\/span><span style=\"color: #000000;\"> represents an ancestor of modern jawed fish and that other ancient jawless fish like lampreys or hagfish &#8211; which still exist today &#8211; are an evolutionary offshoot.<\/span><\/p>\n<p><a href=\"http:\/\/www.nature.com\/nature\/journal\/vaop\/ncurrent\/full\/nature13414.html\" target=\"_blank\"><span style=\"text-decoration: underline;\">Original research paper<\/span><\/a>\u00a0published in the\u00a0<span style=\"font-style: italic; color: #000000;\">Nature\u00a0<\/span>on\u00a0<strong>June 11, 2014<\/strong>.<\/p>\n<p><span style=\"text-decoration: underline;\"><strong>Names and affiliations of selected\u00a0authors<\/strong><\/span><\/p>\n<h4><a style=\"color: #1155cc;\" href=\"http:\/\/www.rom.on.ca\/en\/collections-research\/rom-staff\/jean-bernard-caron\" target=\"_blank\">Jean-Bernard Caron<\/a><span style=\"color: #000000;\">, Royal Ontario Museum, Ontario<\/span><\/h4>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>New fossils of an ancient fish from Marble Canyon in British Columbia\u2019s Kootenay National Park have provided insight into how jaws evolved. The remains represent the best-preserved fossils of\u00a0Metaspriggina walcottii, a 500 million-year-old species that is among the oldest known fish. Based on the shape of features called \u2018branchial bars\u2019 associated with the gills, the [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":1879,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[25],"tags":[174,170,113,917,909,50],"class_list":["post-1921","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest","tag-animals","tag-biodiversity","tag-biology","tag-evolution","tag-genetics","tag-ontario"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/06\/Caron1.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-uZ","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1921","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=1921"}],"version-history":[{"count":3,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1921\/revisions"}],"predecessor-version":[{"id":1979,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/1921\/revisions\/1979"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/1879"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=1921"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=1921"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=1921"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}