Revista geológica de América central ISSN Impreso: 0256-7024 ISSN electrónico: 2215-261X

OAI: https://revistas.ucr.ac.cr/index.php/geologica/oai
La asociación bentónica del Bivalvo Miocénico <i> Nuculana fundationis</i>: índice de condiciones disaeróbicas en sedimentos clásticos finos
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How to Cite

Fischer, R., & Aguilar, T. (2011). La asociación bentónica del Bivalvo Miocénico <i> Nuculana fundationis</i>: índice de condiciones disaeróbicas en sedimentos clásticos finos. Revista geológica De América Central, 18. https://doi.org/10.15517/rgac.v0i18.13524

Abstract

A fauna of benthic bivalvs, recolectced from pelitic rocks of the Roca Carballo Member (Punta Carballo Formation) near Esparza, Puntarenas Province, Costa Rica, is composed of autochthonous and parautochthonous elements. The assemblage, characterized by low diversity and equity, is part of a former biocenosis. N. (Nuculana) fundationis n.sp. is the principal element of the association and is accompanied by Harvella aff. sincola, Caryocorbula oropendula, Chione falconensis, Dosinia delicatissima, Tagelus cebus and Anadara singewaldi. Other species of bivalvs are rare and facultative elements. The association colonized the soft, grained subtrate of an subtidal estuary, wherein poikilo-aerobic conditions governed.
https://doi.org/10.15517/rgac.v0i18.13524
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