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dc.contributor.author
Lopez Cabrera O., Maria Isabel
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dc.contributor.author
Olivero, Eduardo Bernardo
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dc.date.available
2021-03-25T17:59:50Z
dc.date.issued
2011-09
dc.identifier.citation
Lopez Cabrera O., Maria Isabel; Olivero, Eduardo Bernardo; An eocene articulated polyplacophora (Mollusca) from the La Meseta Formation, Antarctica and the stratigraphy of the fossil-bearing strata; Paleontological Society; Journal of Paleontology; 85; 5; 9-2011; 970-976
dc.identifier.issn
0022-3360
dc.identifier.uri
http://hdl.handle.net/11336/128937
dc.description.abstract
An exceptionally well-preserved specimen of Leptochiton sp. attached to a brachiopod valve is described from the early Eocene beds of the La Meseta Formation, Seymour Island. It records the first fossil Polyplacophora from Antarctica. The small specimen has eight imbricating valves, rounded lateral margins, ribs of fine granules, and growth marks in all valves. It strongly resembles extant Antarctic and South American species of Leptochiton Gray. The record of articulate valves in fossil Polyplacophora is rare and requires exceptional preservational conditions. Leptochiton sp. is associated with well preserved bryozoans, brachiopods, asterozoan echinoids, and serpulids, among other organisms that inhabited hard substrates in normal marine conditions, and probably lived attached to the side walls of an incised valley eroded in Cretaceous sediments. The well-preserved fossils were probably removed from their attachment site during storm events and, after a short transportation, rapidly buried within the early Eocene valley-fill deposits. The fossil-bearing beds are included in the Telm 2 or Acantilados Allomember of the La Meseta Formation.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Paleontological Society
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dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Antarctica
dc.subject
Polyplacophora
dc.subject
Eocene
dc.subject
La Meseta Formation
dc.subject
Taphonomy
dc.subject.classification
Paleontología
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dc.subject.classification
Ciencias de la Tierra y relacionadas con el Medio Ambiente
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dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
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dc.title
An eocene articulated polyplacophora (Mollusca) from the La Meseta Formation, Antarctica and the stratigraphy of the fossil-bearing strata
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2021-03-12T19:17:29Z
dc.journal.volume
85
dc.journal.number
5
dc.journal.pagination
970-976
dc.journal.pais
Estados Unidos
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dc.journal.ciudad
Lawrence
dc.description.fil
Fil: Lopez Cabrera O., Maria Isabel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.description.fil
Fil: Olivero, Eduardo Bernardo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Austral de Investigaciones Científicas; Argentina
dc.journal.title
Journal of Paleontology
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dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/https://doi.org/10.1666/10-161.1
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://bioone.org/journals/journal-of-paleontology/volume-85/issue-5/10-161.1/An-Eocene-Articulated-Polyplacophora-Mollusca-from-the-La-Meseta-Formation/10.1666/10-161.1.short
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