CICTERRA   20351
CENTRO DE INVESTIGACIONES EN CIENCIAS DE LA TIERRA
Unidad Ejecutora - UE
artículos
Título:
Gastropods from raised marine deposits along the Beagle Channel, southern Argentina: the ancestors of the living fauna
Autor/es:
ZELAYA, D, G. Y S. GORDILLO
Revista:
Marine Biodiversity Records
Editorial:
Cambridge University Press
Referencias:
Lugar: Cambridge; Año: 2011 vol. 4 p. 1 - 20
ISSN:
1755-2672
Resumen:
This contribution focuses on the diversity of gastropods that lived in the Beagle Channel during the Early and Middle
Holocene (from ca. 7500 to 4000 years BP). This temporal framework has special interest because it allowed us to evaluate
the colonization process of a relatively recent marine ecosystem, the Beagle Channel (originated 80007500 years ago), and
the possibility that this channel has represented a faunistic corridor between the Atlantic and Pacific waters of the Magellan
Region. Fossil material from four sampling localities was studied; 31 species of gastropods were identified. Additional records
of four species of gastropods from six other sites at the Beagle Channel are provided. The fauna described in this work represents
the ancestors of the living fauna in the region, which, by comparison, is more diverse for taphonomic and biological
reasons. In addition, most of these species are also currently found both in the Atlantic and Pacific magellanic waters, strongly
suggesting that the Beagle Channel represented a favourable route for the dispersal of molluscs.