{"id":2614,"date":"2013-11-25T07:14:51","date_gmt":"2013-11-25T12:14:51","guid":{"rendered":"http:\/\/www.ordovicianatlas.org\/?page_id=2614"},"modified":"2016-09-13T14:09:58","modified_gmt":"2016-09-13T18:09:58","slug":"zygospira","status":"publish","type":"page","link":"https:\/\/www.ordovicianatlas.org\/atlas\/brachiopoda\/rhynchonellata\/atrypida\/anazygidae\/zygospira\/","title":{"rendered":"Zygospira<\/em>"},"content":{"rendered":"
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Classification<\/strong>
\nPhylum: Brachiopoda<\/a>
\nClass: Rhynchonellata<\/a>
\nOrder: Atrypida<\/a>
\nFamily: Anazygidae<\/a>
\nGenus: Zygospira<\/em> Hall, 1862
\nCincinnatian Species: Zygospira modesta <\/a><\/em>, Zygospira cincinnatiensis <\/a><\/em>, Zygospira kentuckiensis <\/a><\/em><\/em><\/p>\n<\/div>\n

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[accordions title=”” disabled=”false” active=”1″ autoheight=”false” collapsible=”true”] [accordion title=”Taxonomic Details”]
\nSynonym<\/strong>: Pusillagutta<\/em>
\nType species<\/strong>: Atrypa modesta<\/em> Say (in Hall, 1847) (Jin et al., 1997)
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Geologic Range<\/strong>
\nOrdovician (Caradoc – Ashgill)<\/p>\n

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

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

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  • Biconvex and subcircular<\/li>\n
  • Generally very small \u2013 (usually smaller than 1cm)<\/li>\n
  • Plicated<\/li>\n
  • Sulcus on the dorsal valve, Fold on the ventral valve<\/li>\n
  • Internal spires present, but hard to see<\/li>\n
  • Spiral patterns with few coils ornament the valves<\/li>\n
  • Primary lamellae are joined by a transverse jugum <\/li>\n<\/ul>\n<\/div>\n
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    Geographic Occurrences<\/strong><\/p>\n

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