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Echinoids from the Triassic (St. Cassian) of Italy, Their Lantern Supports, and a Revised Phylogeny of Triassic Echinoids

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dc.contributor.author Kier, Porter M. en
dc.date.accessioned 2007-07-31T16:39:56Z
dc.date.available 2007-07-31T16:39:56Z
dc.date.issued 1984
dc.identifier.citation Kier, Porter M. 1984. "<a href="http%3A%2F%2Fdx.doi.org%2F10.5479%2Fsi.00810266.56.1">Echinoids from the Triassic (St. Cassian) of Italy, Their Lantern Supports, and a Revised Phylogeny of Triassic Echinoids</a>." <em>Smithsonian Contributions to Paleobiology</em>. 1&ndash;41. <a href="https://doi.org/10.5479/si.00810266.56.1">https://doi.org/10.5479/si.00810266.56.1</a> en
dc.identifier.issn 0081-0266
dc.identifier.uri http://hdl.handle.net/10088/1978
dc.identifier.uri http://dx.doi.org/10.5479/si.00810266.56.1
dc.description.abstract Three new species of Triassic echinoids are described from the St. Cassian (Karnian) beds of Cortina d&#39;Ampezzo, Italy: <I>Levicidaris furlani, L. pfaifferi, and Zardinechinus giulinii</I>. Hundreds of echinoid fragments from the same beds show that 16 species lack apophyses (interambulacral lantern supports) and 7 possess them. Previously, paleontologists assumed that most Triassic echinoids had apophyses. Their absence from so many species and the presence of slightly developed auricles (ambulacral lantern supports) suggest that two echinoid lineages crossed from the Paleozoic to the Triassic: one, possessing apophyses, is ancestral to all modern cidaroids; a second, lacking apophyses, gave rise to all noncidaroid echinoids. en
dc.format.extent 9109838 bytes
dc.format.extent 3562821 bytes
dc.format.mimetype application/pdf
dc.format.mimetype application/pdf
dc.language.iso en_US
dc.relation.ispartof Smithsonian Contributions to Paleobiology en
dc.title Echinoids from the Triassic (St. Cassian) of Italy, Their Lantern Supports, and a Revised Phylogeny of Triassic Echinoids en
dc.type Journal Article en
dc.identifier.srbnumber 113476
dc.identifier.eISSN 1943-6688
dc.identifier.doi 10.5479/si.00810266.56.1
rft.jtitle Smithsonian Contributions to Paleobiology
rft.issue 56
rft.spage 1
rft.epage 41
dc.description.SIUnit SISP en
dc.citation.spage 1
dc.citation.epage 41
dc.relation.url http://dx.doi.org/10.5479/si.00810266.56.1


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