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Upper Miocene Echinoids from the Yorktown Formation of Virginia and Their Environmental Significance

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dc.contributor.author Kier, Porter M. en
dc.date.accessioned 2007-07-31T16:26:48Z
dc.date.available 2007-07-31T16:26:48Z
dc.date.issued 1972
dc.identifier.citation Kier, Porter M. 1972. <em><a href="https://doi.org/10.5479/si.00810266.13.1">Upper Miocene Echinoids from the Yorktown Formation of Virginia and Their Environmental Significance</a></em>. Washington, D.C.: Smithsonian Institution. <a href="https://doi.org/10.5479/si.00810266.13.1">https://doi.org/10.5479/si.00810266.13.1</a> en
dc.identifier.uri http://hdl.handle.net/10088/1944
dc.identifier.uri http://dx.doi.org/10.5479/si.00810266.13.1
dc.description.abstract Five echinoid species are described from the upper Miocene part of the Yorktown Formation of Virginia: <I>Echinocardium orthonotum</I> (Conrad), <I>Arbacia imporcera</I> (Conrad), <I>Psammechinus philanthropus</I> (Conrad), <I>Mellita aclinensis</I> Kier, and <I>Spatangus glenni</I> Cooke. The assemblage probably lived in shallow, warm-temperate waters, <I>E. orthonotum</I> deeply buried near shore, <I>S. glenni</I> shallowly buried offshore, and <I>M. aclinensis</I> with its test just covered near shore. <I>Arbacia improcera</I> and <I>P. philanthropus</I> presumably lived together intertidally and near shore, <I>P. philanthropus</I> living in holes in the indurated sediments or on the sand with its test covered with debris, whereas <I>A. improcera</I> probably was easily visible with nothing covering its test. Specimens formerly referred to <I>E. orthonotum</I> from the middle Miocene Choptank Formation from Maryland are referred to <I>E. marylandiense</I>, new species. <I>Echinocardium gothicum</I> (Ravenel), from the Bear Bluff Formation of South Carolina, is considered a junior subjective synonym of <I>E. orthonotum</I>. en
dc.format.extent 13265081 bytes
dc.format.extent 3346490 bytes
dc.format.mimetype application/pdf
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.title Upper Miocene Echinoids from the Yorktown Formation of Virginia and Their Environmental Significance en
dc.type Book, Whole en
dc.identifier.srbnumber 113425
dc.identifier.eISSN 1943-6688
dc.identifier.doi 10.5479/si.00810266.13.1
dc.description.SIUnit SISP en
dc.relation.url https://doi.org/10.5479/si.00810266.13.1


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