MACNBR   00242
MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Preliminar y historical paleobiogeographic analysis of the Austrovenus Finlay and Ameghinomya Ihering lineages (Bivalvia: Chioninae) from the Neogene of South America and New Zealand
Autor/es:
DAMIÁN PÉREZ; MARTÍN EZCURRA
Lugar:
Luján
Reunión:
Jornada; Reunión Anual de Comunicaciones de la Asociación Paleontológica Argentina; 2011
Institución organizadora:
Asociación Paleontológica Argentina
Resumen:
Ameghinomya is an important member of the South American Cenozoic molluscan assemblages. Its phylogenetic and biogeographic relationships have been poorly studied. A recent phylogenetic revision of a subset of 21 chionines recovered Ameghinomya (Miocene?Recent, South America) species within a monophyletic clade sister-group of a Protothaca clade [Austrovenus (Pliocene?Recent, New Zealand)-Protothaca Dall (three extant species, American Pacific)-Nioche (Antinioche) burmeisteri (Borchert) (Miocene, Entre Ríos)-Chionista Keen (Recent, American Pacific)]. Within this numerical phylogenetic framework at species level, we tested the previous proposal of a dispersal event of Austrovenus from South America to Australasia from an Ameghinomya ancestry during the Neogene. A tree reconciliation analysis rendered evidence (p