New ostracod species of the Nirihuau Formation (Oligocene) from its type area (near San Carlos de Bariloche) Rio Negro Province, Argentina

Five new limnic taxa of Ostracoda are described and illustrated: Chlanydotheca? nirihuauensis sp. nov., Eucypris? barilochensis sp. nov., Candona? mapuche sp. nov., Eucandona? patagonica sp. nov. and Limnocythere? nahuelhuapiana sp. nov. They are from the Nirihuau Formation of Oligocene age. The sal...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Bertels-Psotka, A., Cusminsky, G.C.
Formato: JOUR
Materias:
Argentina
Limnic environment
Middle Tertiary
Nirihuau Formation
Ostracoda
Systematics
Oligocene
paleoenvironment
salinity
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00027014_v36_n1_p71_BertelsPsotka
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Five new limnic taxa of Ostracoda are described and illustrated: Chlanydotheca? nirihuauensis sp. nov., Eucypris? barilochensis sp. nov., Candona? mapuche sp. nov., Eucandona? patagonica sp. nov. and Limnocythere? nahuelhuapiana sp. nov. They are from the Nirihuau Formation of Oligocene age. The salinity of the limnic environment ranges from fresh to oligohaline (0,2-10‰). The change of the faunal association along several levels of the succession are attributed to energy variations in the paleoenvironment.

Ejemplares similares