{"id":4401,"date":"2014-01-07T18:17:20","date_gmt":"2014-01-07T23:17:20","guid":{"rendered":"http:\/\/www.ordovicianatlas.org\/?page_id=4401"},"modified":"2016-09-28T22:45:15","modified_gmt":"2016-09-29T02:45:15","slug":"trochonema","status":"publish","type":"page","link":"https:\/\/www.ordovicianatlas.org\/atlas\/mollusca\/gastropoda\/murchisoniina\/trochonematidae\/trochonema\/","title":{"rendered":"Trochonema<\/em>"},"content":{"rendered":"
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Classification<\/strong>
\nPhylum: Mollusca <\/a>
\nClass: Gastropoda<\/a>
\nOrder: Murchisoniina<\/a>
\nFamily: Trochonematidae<\/a>
\nGenus: Trochonema<\/em> Salter, 1859
\nCincinnatian Species: Trochonema madisonense<\/a><\/p>\n

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[accordions title=”” disabled=”false” active=”1″ autoheight=”false” collapsible=”true”] [accordion title=”Taxonomic Details”]<\/p>\n
  • 1859 Trochonema<\/em> Salter, Figures and Descriptions of Canadian organic remains, decade 1, Geological Survey of Canada, p. 27.
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    Geologic Range<\/strong>
    \nMiddle Ordovician – Early Devonian<\/p>\n

    Common Paleoecology<\/strong>
    \nTrochonema<\/em> is an extinct genus of facultatively mobile epifaunal suspension feeders<\/p>\n

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

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    • Base generally flattened yet sometimes quite inflated<\/li>\n
    • Shell shaped like a spinning top or inverted cone<\/li>\n
    • Growth lines crossing the whorls from above obliquely backward<\/li>\n
    • Presence of lower spiral angulation <\/li>\n<\/ul>\n<\/div>\n
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      Geographic Occurrences<\/strong><\/p>\n

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