{"id":4609,"date":"2014-01-10T17:24:01","date_gmt":"2014-01-10T22:24:01","guid":{"rendered":"http:\/\/www.ordovicianatlas.org\/?page_id=4609"},"modified":"2016-09-26T22:46:35","modified_gmt":"2016-09-27T02:46:35","slug":"lichenocrinus","status":"publish","type":"page","link":"https:\/\/www.ordovicianatlas.org\/atlas\/echinodermata\/crinoidea\/lichenocrinus\/","title":{"rendered":"Lichenocrinus<\/em>"},"content":{"rendered":"
\n
\n
\"\"<\/div>\n
\n

Classification<\/strong>
\nPhylum: Echinodermata<\/a>
\nClass: Crinoidea<\/a>
\nHoldfasts
\nGenus: Lichenocrinus<\/em> (Hall, 1866)
\nCincinnatian Species: Lichenocrinus crateriformis<\/a><\/em>, Lichenocrinus tuberculatus<\/a><\/em><\/p>\n<\/div>\n

\"\"<\/div>\n<\/div>\n<\/div>\n
[accordions title=”” disabled=”false” active=”1″ autoheight=”false” collapsible=”true”] [accordion title=”Taxonomic Details”]
\nNote<\/strong>: Considered to be part of Ectenocrinus<\/em> (Fossils of Ohio, 1996)
\n[\/accordion] [\/accordions]<\/div>\n
\n

Geologic Range<\/strong>
\nOrdovician – Silurian<\/p>\n

Common Paleoecology<\/strong>
\nLichenocrinus<\/em> is an extinct holdfast genus of stationary upper-level epifaunal suspension feeders<\/p>\n

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

    \n
  • A type of holdfast belonging to several crinoids<\/li>\n
  • Structures range in size from a few millimeters to more than 10 mm and may be either smooth or very nodose<\/li>\n
  • A plated upper surface, supported by numerous radiating lamellae<\/li>\n
  • Deep plated crater contains the distal extremity of the stem<\/li>\n
  • Disc composed of an indefinite number of polygonal plates<\/li>\n<\/ul>\n<\/div>\n
    <\/div>\n
    \n

    Geographic Occurrences<\/strong><\/p>\n

    <\/div>