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Checklist of the Pleistocene marine molluscs of Praínha and Lagoínhas (Santa Maria Island, Azores).

2002Journal article Open access
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dc.contributor.authorÁvila, Sérgio P.
dc.contributor.authorAmen, Rui G.
dc.contributor.authorAzevedo, José M. N.
dc.contributor.authorCachão, Mário
dc.contributor.authorGarcía-Talavera, Francisco
dc.date.accessioned2011-02-23T11:20:00Z
dc.date.available2011-02-23T11:20:00Z
dc.date.issued2002
dc.description.abstractA critical review of the reported Pleistocene species of and Lagoinhas (Santa Maria Island, Azores) is provided, new data increasing the marine molluscan fauna to 95 taxa (80 Gastropoda and 15 Bivalvia). Six of the reported taxa are considered dubious records (5 Gastropoda, 1 Bivalvia). The stratigraphic sequence of Praia Formosa is composed of two main units, about 2-4 meters above present-day sea level. In the lower unit, Patella ulyssiponensis dominates the fossil assemblage of the basal calcareous conglomerate while Myoforceps arustatus (Dillwyn, 1817) dominates the assemblage associated to a calcareous algae mat. Above a non-depositional hiatus surface, a sandy beach deposit mainly composes the upper unit. Its fossil assemblages are dominated by large amounts of Eruilin castanea (Montagu, 1803) and, in a less extent, Lucinella diwricntn (Linnaeus, 1758) and Ensis minor (Chenu, 1843). The stratigraphic sequence of Lagoinhas, located 7.4 m above present-day sea level, is also composed of two units. A basal conglomerate is fossilized by or passes laterally to a calcareous algae mat, dominated by Myoforceps aristatus and with abundant Calliostoma pecimens. As at Prainha, these lower units are covered by a highly fossiliferous sandy bach deposit, though thinner, in which Ervlie castanea is the dominant species. Some species with Caribbean or West African affinities, the "Strombus bubonius accompanying fauna" (Garcia-Talavera, 1990), were found in the lower layers. The upper layer malacofauna is mainly related to the Mediterranean faunas, similarly to what happens nowadays (Ávila, 2000).por
dc.identifier.citationÁVILA, S.P., R. AMEN, J. M. N. AZEVEDO, M. CACHÃO & F. GARCIA-TALAVERA, (2002). Checklist of the Pleistocene marine molluscs of Praínha and Lagoínhas (Santa Maria Island, Azores). "Açoreana. Revista de Estudos Açoreanos", 9(4): 343-370.por
dc.identifier.urihttp://hdl.handle.net/10400.3/1019
dc.language.isoengpor
dc.publisherSociedade Afonso Chavespor
dc.relation.ispartofseriesAçoreana. Revista de Estudos Açoreanos;9(4)
dc.subjectPleistocene speciespor
dc.subjectPraia Formosapor
dc.subjectSanta Maria Islandpor
dc.subjectPatella ulyssiponensispor
dc.subjectMyoforceps arustatuspor
dc.subjectEruilin castaneapor
dc.subjectLucinella diwricntnpor
dc.subjectEnsis minorpor
dc.subjectFauna Malacológica Marinhapor
dc.titleChecklist of the Pleistocene marine molluscs of Praínha and Lagoínhas (Santa Maria Island, Azores).por
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspor
rcaap.typearticlepor

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