{"id":2756,"date":"2013-12-02T20:23:57","date_gmt":"2013-12-03T01:23:57","guid":{"rendered":"http:\/\/www.ordovicianatlas.org\/?page_id=2756"},"modified":"2014-11-27T15:45:39","modified_gmt":"2014-11-27T20:45:39","slug":"orthocerida","status":"publish","type":"page","link":"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/cephalopoda\/orthocerida\/","title":{"rendered":"Orthocerida"},"content":{"rendered":"<div align=\"left\">\n<div style=\"height: 250px;\" align=\"center\">\n<div style=\"border-right: 20px solid white; float: left; width: 250px;\"><img data-recalc-dims=\"1\" decoding=\"async\" alt=\"\" src=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/12\/Treptoceras_duseri_250pxW2.png?w=605&#038;ssl=1\" \/><\/div>\n<div style=\"float: left; width: 600px;\">\n<p align=\"left\"><strong>Classification<\/strong><br \/>\nPhylum: <a title=\"Mollusca\" href=\" https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/\"> Mollusca <\/a><br \/>\nClass: <a title=\"Cephalopoda\" href=\" https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/cephalopoda\/\">Cephalopoda<\/a><br \/>\nOrder: Orthocerida Kuhn, 1940<br \/>\nCincinnatian Families: <a title=\"Orthoceratidae\" href=\"  https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/cephalopoda\/orthocerida\/orthoceratidae\/\"> Orthoceratidae<\/a>, <a title=\"Proteoceratidae\" href=\"  https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/cephalopoda\/orthocerida\/proteoceratidae\/\"> Proteoceratidae<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<p><strong>Geologic Range<\/strong><br \/>\nEarly Ordovician &#8211; Late Triassic<\/p>\n<p><strong>Common Paleoecology<\/strong><br \/>\nOrthocerida is an extinct order of nektonic carnivores<\/p>\n<\/div>\n<p><strong>Characteristics of the Order<\/strong><\/p>\n<ul>\n<li>Nautoloid with straight to curved shells; never coiled <\/li>\n<li>Shells smooth or elaborately ornamented <\/li>\n<li>Siphuncles with orthochoanitic, or secondarily cyrtochoanitic septal necks and thin connecting rings<\/li>\n<\/ul>\n<div style=\"clear: both;\">[accordions title=&#8221;&#8221; disabled=&#8221;false&#8221; active=&#8221;1&#8243; autoheight=&#8221;false&#8221; collapsible=&#8221;true&#8221;] [accordion title=&#8221;Published Descriptions&#8221;]<br \/>\n<em>Treatise on Invertebrate Paleontology, Part K (1964)<\/em>:<\/p>\n<ul>\n<li>Straight-to-curved but never coiled nautiloids with smooth or elaborately ornamented shells, typically well-developed cameral deposits, and siphuncles with orthochoanitic, or secondarily cyrtochoanitic septal necks and thin connecting rings, either empty or occupied by parietal or annulosiphonate deposits. The Orthocerida almost certainly developed from the Baltoceratidae of the Ellesmerocerida.<\/li>\n<\/ul>\n<p>[\/accordion] [\/accordions]<\/p>\n<\/div>\n<div>\n<div align=\"center\">\n<div style=\"height: 300px; width: 800px;\" align=\"center\">\n<div style=\"border-right: 15px solid white; float: left; width: 250px;\">\n<p align=\"center\">Orthoceratidae<\/p>\n<p><a href=\"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/cephalopoda\/orthocerida\/orthoceratidae\/\"> <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2014\/09\/pleurorthoceras-clarksvillensis-250-black.png?resize=250%2C250&#038;ssl=1\" width=\"250\" height=\"250\" \/><br \/>\n<\/a><\/p>\n<\/div>\n<div style=\"border-right: 15px solid white; float: left; width: 250px;\">\n<p align=\"center\">Proteoceratidae<\/p>\n<p><a href=\"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/cephalopoda\/orthocerida\/proteoceratidae\/\"> <img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" alt=\"\" src=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/12\/Treptoceras_duseri_250pxB2.png?resize=250%2C250&#038;ssl=1\" width=\"250\" height=\"250\" \/><br \/>\n<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Classification Phylum: Mollusca Class: Cephalopoda Order: Orthocerida Kuhn, 1940 Cincinnatian Families: Orthoceratidae, Proteoceratidae Geologic Range Early Ordovician &#8211; Late Triassic Common Paleoecology Orthocerida is an extinct order of nektonic carnivores Characteristics of the Order Nautoloid with straight to curved shells; &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"more-link\" href=\"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/cephalopoda\/orthocerida\/\"> <span class=\"screen-reader-text\">Orthocerida<\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2750,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"full-width-page.php","meta":{"jetpack_post_was_ever_published":false,"footnotes":""},"class_list":["post-2756","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P3T22h-Is","_links":{"self":[{"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages\/2756","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/comments?post=2756"}],"version-history":[{"count":11,"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages\/2756\/revisions"}],"predecessor-version":[{"id":10666,"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages\/2756\/revisions\/10666"}],"up":[{"embeddable":true,"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages\/2750"}],"wp:attachment":[{"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/media?parent=2756"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}