Aspects of the evolution of Cainozoic deep-sea Ostracoda in the Southwest Pacific

Author(s): Whatley, Robin
Author Affiliation(s): Primary:
University of Wales, Institute of Earth Studies, Aberystwyth, United Kingdom
Volume Title: Articulos correspondientes al Tercer simposio internacional sobre Eventos del Neogeno en el Pacifico
Volume Author(s): Tsuchi, Ryuichi, prefacer
Source: Revista Geológica de Chile, 19(1), p.113-127; Tercer simposio internacional sobre Eventos del Neogeno en el Pacifico, Valparaiso/Vina del Mar, Chile, Aug. 1989, prefaced by Ryuichi Tsuchi. Publisher: Servicio Nacional de Geología y Minería, Santiago de Chile, Chile. ISSN: 0716-0208 CODEN: RGCHDR
Note: In English with Spanish summary. 35 refs.; illus. incl. 6 tables, sketch map
Summary: The simple species diversity (both recorded and cumulative) of deep sea Ostracoda throughout the Cainozoic of the Southwest Pacific is shown to fluctuate considerably as does the level of originations and extinctions of species. The former exceed the latter throughout the Palaeocene and Eocene thus allowing diversity to build up to its acme in the middle Eocene where, in NP Zone 16 extinctions exceed originations for the first time. These events, the subsequent late Eocene/early Oligocene diversity crash followed by a recovery into the late Oligocene, and the diversity and evolutionary high low points of the Neogene and Quaternary, are discussed with reference to contemporary oceanic events and compared to circumstances in other oceans.
Year of Publication: 1992
Research Program: DSDP Deep Sea Drilling Project
Key Words: 10 Paleontology, Invertebrate; Arthropoda; Biologic evolution; Cenozoic; Crustacea; DSDP Site 206; DSDP Site 207; DSDP Site 208; DSDP Site 209; DSDP Site 277; DSDP Site 289; Deep Sea Drilling Project; Deep-sea environment; IGCP; Invertebrata; Leg 21; Leg 29; Leg 30; Mandibulata; Marine environment; Microfossils; Ostracoda; Pacific Ocean; South Pacific; Southwest Pacific; Species diversity; West Pacific
Coordinates: S570000 S400000 E1770000 E1430000
S270000 S000000 E1760000 E1530000
Record ID: 1993045372
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data supplied by Institute of Geological and Nuclear Sciences Limited (GNS Science), Lower Hutt, New Zealand