{"id":4428,"date":"2014-01-07T19:29:34","date_gmt":"2014-01-08T00:29:34","guid":{"rendered":"http:\/\/www.ordovicianatlas.org\/?page_id=4428"},"modified":"2016-10-10T12:39:04","modified_gmt":"2016-10-10T16:39:04","slug":"retrorsirostra","status":"publish","type":"page","link":"https:\/\/www.ordovicianatlas.org\/atlas\/brachiopoda\/rhynchonellata\/orthida\/plaesiomyidae\/retrorsirostra\/","title":{"rendered":"Retrorsirostra<\/em>"},"content":{"rendered":"
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Classification<\/strong>
\nPhylum: Brachiopoda<\/a>
\nClass: Rhynchonellata<\/a>
\nOrder: Orthida<\/a>
\nFamily: Plaesiomyidae<\/a>
\nGenus: Retrorsirostra<\/em> Schuchert & Cooper, 1931
\nCincinnatian Species: Retrosirostra carleyi<\/a><\/em>\n<\/p>\n<\/div>\n

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[accordions title=”” disabled=”false” active=”1″ autoheight=”false” collapsible=”true”] [accordion title=”Taxonomic Details”]
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Geologic Range<\/strong>
\nLate Ordovician (Ashgill)<\/p>\n

Common Paleoecology<\/strong>
\nRetrorsirostra<\/em> is an extinct genus of stationary epifaunal suspension feeders<\/p>\n

Identification in Hand Sample<\/strong>:<\/p>\n

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  • Epipunctae large, usually about eight per rib<\/li>\n
  • Subparallel dental plates<\/li>\n
  • Nearly straight commissure<\/li>\n
  • Coarse and densely spaced ribs<\/li>\n<\/ul>\n<\/div>\n
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    Geographic Occurrences<\/strong><\/p>\n

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