{"id":2997,"date":"2013-12-06T23:29:21","date_gmt":"2013-12-07T04:29:21","guid":{"rendered":"http:\/\/www.ordovicianatlas.org\/?page_id=2997"},"modified":"2016-09-07T12:59:50","modified_gmt":"2016-09-07T16:59:50","slug":"anomalodonta-gigantea","status":"publish","type":"page","link":"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/bivalvia\/pterioida\/ambonychiidae\/anomalodonta\/anomalodonta-gigantea\/","title":{"rendered":"<em>Anomalodonta gigantea<\/em>"},"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\" src=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/11\/Anomalodonta_gigantea_250pxW.png?w=605&#038;ssl=1\" alt=\"\" \/><\/div>\n<div style=\"float: left; width: 350px;\">\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=\"Bivalvia\" href=\" https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/bivalvia\/\"> Bivalvia <\/a><br \/>\nOrder: <a title=\"Pterioida\" href=\"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/bivalvia\/pterioida\/\">Pterioida<\/a><br \/>\nFamily: <a title=\"Ambonychiidae\" href=\"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/bivalvia\/pterioida\/ambonychiidae\/\">Ambonychiidae<\/a><br \/>\nGenus: <em><a title=\"Anomalodonta\" href=\"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/bivalvia\/pterioida\/ambonychiidae\/anomalodonta\/\">Anomalodonta<\/a><\/em><br \/>\nSpecies: <em>Anomalodonta gigantea<\/em> (Miller, 1847)<\/p>\n<\/div>\n<div style=\"float: right; width: 250px;\"><img data-recalc-dims=\"1\" decoding=\"async\" src=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/12\/A.gigantea_paleoeco.png?w=605&#038;ssl=1\" alt=\"\" \/><\/div>\n<\/div>\n<\/div>\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;Taxonomic Details&#8221;]<br \/>\n[\/accordion] [\/accordions]<\/div>\n<div class=\"grid col-300\">\n<p><strong>Stratigraphic Occurrences<\/strong><\/p>\n<p><a href=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/12\/A.gigantea_strat.png?ssl=1\"><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"alignleft size-medium wp-image-3422\" src=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/12\/A.gigantea_strat.png?resize=300%2C273&#038;ssl=1\" alt=\"A.gigantea_strat\" width=\"300\" height=\"273\" data-id=\"3422\" srcset=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/12\/A.gigantea_strat.png?resize=300%2C273&amp;ssl=1 300w, https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/12\/A.gigantea_strat.png?resize=150%2C136&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/12\/A.gigantea_strat.png?w=724&amp;ssl=1 724w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<\/div>\n<div class=\"grid col-100\"><\/div>\n<div class=\"grid col-575 fit\">\n<p><strong>Geographic Occurrences<\/strong><\/p>\n<pre><code><div class=\"leaflet-map WPLeafletMap\" style=\"height:250px; width:575px;\"><\/div><script>\nwindow.WPLeafletMapPlugin = window.WPLeafletMapPlugin || [];\nwindow.WPLeafletMapPlugin.push(function WPLeafletMapShortcode() {\/*<script>*\/\nvar baseUrl = atob('Ly97c30udGlsZS5vcGVuc3RyZWV0bWFwLm9yZy97en0ve3h9L3t5fS5wbmc=');\nvar base = (!baseUrl && window.MQ) ?\n    window.MQ.mapLayer() : L.tileLayer(baseUrl,\n        L.Util.extend({}, {\n            detectRetina: 0,\n        },\n        {\"subdomains\":\"abc\",\"noWrap\":false,\"maxZoom\":13}        )\n    );\n    var options = L.Util.extend({}, {\n        layers: [base],\n        attributionControl: false\n    },\n    {\"zoomControl\":true,\"scrollWheelZoom\":false,\"doubleClickZoom\":false,\"fitBounds\":false,\"minZoom\":0,\"maxZoom\":13,\"maxBounds\":null,\"attribution\":\"<a href=\\\"http:\\\/\\\/leafletjs.com\\\" title=\\\"A JS library for interactive maps\\\">Leaflet<\\\/a>; \\r\\n\\u00a9 <a href=\\\"http:\\\/\\\/www.openstreetmap.org\\\/copyright\\\">OpenStreetMap<\\\/a> contributors\"},\n    {});\nwindow.WPLeafletMapPlugin.createMap(options).setView([39,-84.5],7);});<\/script><\/code><\/pre>\n<pre><code>Map point data provided by <a href=\"https:\/\/www.idigbio.org\/\">iDigBio.<\/a><script type=\"text\/javascript\">\r\n            \r\n            var terms = [\r\n                {\"term\"  :  { \"scientificname\" : \"anomalodonta gigantea\"}},\r\n\t\t\r\n            ];\r\n\r\n            jQuery(document).ready(function(){\r\n                var query = {\r\n                    \"size\": 10000,\r\n                    \"from\": 0,\r\n                    \"query\":{\r\n                        \"filtered\":{\r\n                            \"filter\":{\r\n                                \"and\":[]\r\n                            }\r\n                        }\r\n                    },\r\n                    \"sort\":{\r\n                        \"scientificname\":{\"order\":\"asc\"}\r\n                    }\r\n                };\r\n               \r\n                var link=[];\r\n                jQuery.each(terms,function(ind,item){\r\n                    query.query.filtered.filter.and.push(item);\r\n                    jQuery.each(item.term,function(key,val){\r\n                        link.push(key+'='+ val.toLowerCase());\r\n                    });\r\n                });\r\n                \r\njQuery.post('https:\/\/search.idigbio.org\/idigbio\/records\/_search', JSON.stringify(query),function(resp){\r\n                    jQuery(resp.hits.hits).each(function(ind,item){\r\n                        var source = item._source;\r\n                        if(typeof source.geopoint !== 'undefined'){\r\n                            var c = new L.Circle([source.geopoint.lat,source.geopoint.lon],1,{color:'#E90A0A',opacity:1,fillopacity:1});\r\n                            c.addTo(map_1);\r\n                        }\r\n                    });\r\n                });\r\n            });\r\n<\/script><\/code><\/pre>\n<\/div>\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;Stratigraphic Description&#8221;]<br \/>\nSequences (Formations)<\/p>\n<ul>\n<li>C5 Sequence (Waynesville)<\/li>\n<li>C4 Sequence (Arnheim)<\/li>\n<\/ul>\n<p>[\/accordion] [\/accordions]<\/p>\n<\/div>\n<div>\n<p><strong>Identification in Hand Sample<\/strong><\/p>\n<div align=\"left\">\n<ul>\n<li>Large pelecypod 8-10 cm. in length, 8-10 cm in width<\/li>\n<li>Radial plications broad, deep<\/li>\n<li>The beak is sharp, incurved, and situated at the end of the cardinal margin<\/li>\n<li>Byssal opening immediately below the beak<\/li>\n<li>Lack auricles<\/li>\n<\/ul>\n<\/div>\n<div align=\"center\">\n<div style=\"width: 800px;\">\n<div><img data-recalc-dims=\"1\" loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-2644\" src=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/11\/Anomalodonta_gigantea_800px.png?resize=605%2C244&#038;ssl=1\" alt=\"Anomalodonta_gigantea_800px\" width=\"605\" height=\"244\" data-id=\"2644\" srcset=\"https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/11\/Anomalodonta_gigantea_800px.png?w=800&amp;ssl=1 800w, https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/11\/Anomalodonta_gigantea_800px.png?resize=150%2C60&amp;ssl=1 150w, https:\/\/i0.wp.com\/www.ordovicianatlas.org\/wp-content\/uploads\/2013\/11\/Anomalodonta_gigantea_800px.png?resize=300%2C121&amp;ssl=1 300w\" sizes=\"auto, (max-width: 605px) 100vw, 605px\" \/><\/div>\n<p style=\"margin-top: 0; font-size: 75%;\" align=\"left\"><em>Anomalodonta gigantea<\/em> from Waynesville formation of Montgomery County, Ohio (OUIP 1306)<\/p>\n<\/div>\n<\/div>\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 Description&#8221;]<br \/>\n<em>Davis (1998)<\/em>:<\/p>\n<ul>\n<li>Pelecypod. Characterized by its outline, large size, broad, deep plications, and tooth structure Richmondian.<\/li>\n<\/ul>\n<p><em>Fossils of Ohio (1996) <\/em>:<\/p>\n<ul>\n<li>The Upper Ordovician genus <em>Anomalodonta<\/em> is represented by <em>A. gigantean<\/em> Miller, a large species that lacks auricles and has broad, radial plications.<\/li>\n<\/ul>\n<p><em>McFarlan (1931)<\/em>:<\/p>\n<ul>\n<li>An unusually large pelecypod 8-10 cm. in length and almost as wide, alate posteriorly and marked by 30-40 strong radiating ribs. Anterior edge about at right angles to hinge line. Beaks sharp, slightly incurved, and situated at the anterior end of then cardinal margin. Byssal opening immediately below the beak, 6-7 mm. in diameter. In a specimen 8 cm. long the hinge has a length of about 5 cm. From 4-14 cartilage grooves extend from the end of the wing to the byssal opening. A characteristic Richmond species known from the Arnheim to the Whitewater. In the region around Louisville it seems to be restricted to the Arnheim.<\/li>\n<\/ul>\n<p><em>Miller (1874)<\/em><\/p>\n<ul>\n<li>Shell equivalve, inequilateral, alate posteriorly and compressed, more convex toward the umbones and the anterior side, anterior side abruptly declining, beaks rather sharp and slightly incurved. Surface marked by 30 to 40 strong radii, same width as the intermediate spaces, which are concave grooves marked with concentric striae, giving much the same external appearance as those of an <em>Ambonychia radiata<\/em>. Shell marked exteriorly, toward the margin, with lines of growth and concentric striae, which cross the radii, rendering it likely that concentric striae crossed the radii over the whole surface of the shell, though they appear now to be smooth. Byssal sinus immediately below the beak anteriorly, about \u00bc of an inch in diameter in a large specimen. Height of the shell from 2 to 4 inches, greatest breadth about 1\/5 less. Shell quite thick about the umbones and wing, but thinner towards the base. Large cardinal tooth or elevation beneath the umbones and sloping posteriorly from the beak. The cardinal elevation on the left valve having a depression to receive a corresponding elevation, though slight, on the right valve. From the cardinal tooth there are from 4 to 18 lateral cartilage grooves extending posteriorly to the end of the wing, and terminating with the shell, and there are the same number of cartilage grooves on the anterior side of the cardinal tooth that immediately run together as the pass into the byssal sinus. The cartilage grooves vary in number with the age and size of the shell. The shell is thickened on the anterior side, and appears to show lines of growth passing through the sinus to the base. A large muscular impression is found near the anterior margin, half way from the sinus to the base of the shell, and there are appearances that indicate another muscular impression on the posterior wing of the shell near its termination. Greatest depth of a valve in a large specimen, \u00bd and inch.<\/li>\n<li>This is the largest bivalve yet known in the Cincinnati group. It may readily be distinguished from <em>Anomalodonta alata<\/em> by the surface markings, though the general outline form of the two shells are nearly the same.<\/li>\n<li>I found this species near Versailles, Indiana, about 40 miles west of Cincinnati, and about 300 feet below Upper Silurian rocks; and I also found what I believe to be a cast of the same at Richmond, Indiana. I do not know that it can be found elsewhere, but the probabilities are that it can be found in the upper part of the Cincinnati Group, from Madison to Richmond, and at other places.<\/li>\n<\/ul>\n<p>[\/accordion] [\/accordions]<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Classification Phylum: Mollusca Class: Bivalvia Order: Pterioida Family: Ambonychiidae Genus: Anomalodonta Species: Anomalodonta gigantea (Miller, 1847) [accordions title=&#8221;&#8221; disabled=&#8221;false&#8221; active=&#8221;1&#8243; autoheight=&#8221;false&#8221; collapsible=&#8221;true&#8221;] [accordion title=&#8221;Taxonomic Details&#8221;] [\/accordion] [\/accordions] Stratigraphic Occurrences Geographic Occurrences Map point data provided by iDigBio. [accordions title=&#8221;&#8221; disabled=&#8221;false&#8221; &hellip;<\/p>\n<p class=\"read-more\"> <a class=\"more-link\" href=\"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/bivalvia\/pterioida\/ambonychiidae\/anomalodonta\/anomalodonta-gigantea\/\"> <span class=\"screen-reader-text\"><em>Anomalodonta gigantea<\/em><\/span> Read More &raquo;<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"parent":2978,"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-2997","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"jetpack_shortlink":"https:\/\/wp.me\/P3T22h-Ml","_links":{"self":[{"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages\/2997","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=2997"}],"version-history":[{"count":10,"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages\/2997\/revisions"}],"predecessor-version":[{"id":13347,"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages\/2997\/revisions\/13347"}],"up":[{"embeddable":true,"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/pages\/2978"}],"wp:attachment":[{"href":"https:\/\/www.ordovicianatlas.org\/wp-json\/wp\/v2\/media?parent=2997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}