Guernet, Claude and Danelian, Taniel (2006): Ostracodes bathyaux du Cretace terminal-Eocene moyen en Atlantique tropical (Plateau de Demerara, Leg 207) Bathyal Ostracoda of the uppermost Cretaceous to middle Eocene in the tropical Atlantic (Demerara Rise, Leg 207)
Leg/Site/Hole:
Related Expeditions:
ODP 207
Identifier:
ID:
2008-028064
Type:
georefid
ID:
10.1016/j.revmic.2006.10.005
Type:
doi
Creator:
Name:
Guernet, Claude
Affiliation:
Universite Pierre et Marie Curie-Paris VI, Laboratoire de Biomineralisations et Paleoenvironnements, Paris, France
Role:
author
Name:
Danelian, Taniel
Affiliation:
Role:
author
Identification:
Title:
Ostracodes bathyaux du Cretace terminal-Eocene moyen en Atlantique tropical (Plateau de Demerara, Leg 207) Bathyal Ostracoda of the uppermost Cretaceous to middle Eocene in the tropical Atlantic (Demerara Rise, Leg 207)
Year:
2006
Source:
In: Erbacher, Jochen (editor), Danelian, Taniel (editor), Nishi, Hiroshi (editor), Demerara Rise (ODP Leg 207); equatorial Cretaceous and Palaeogene stratigraphy and palaeoceanography; Part II
Publisher:
Elsevier, Paris, France
Volume:
49
Issue:
4
Pages:
215-225
Abstract:
Ostracode faunal assemblages which lived in bathyal environments are analysed from uppermost Maastrichtian-middle Eocene sediments of sites 1260 and 1261, drilled on the distal margin of Demerara, off Surinam (Leg 207, western tropical Atlantic). As for numerous other groups, the Cretaceous/Tertiary mass extinction event led to the disappearance of numerous bathyal ostracode species and it was followed by a very slow recovery during the Palaeocene. It appears that this extinction event was more devastating for detritus-feeder ostracode species than for filter or silt-eater groups, which crossed the K/T boundary without any or little morphological change. This extinction selectivity may be explained by the drop in productivity of surface waters which took place at the K/T boundary. Finally, psychrospheric ostracode species were encountered in Middle Eocene sediments, confirming thus the general cooling of deep oceanic realm recognised in general for this time interval.
Language:
French
Genre:
Serial
Rights:
URL:
Coverage: Geographic coordinates: North:9.1600 West:-54.3300 East:
-54.1900 South:9.0300
Keywords: Invertebrate paleontology; Arthropoda; Atlantic Ocean; benthic taxa; Cenozoic; Cretaceous; Crustacea; Demerara Rise; Eocene; Equatorial Atlantic; faunal list; faunal studies; Invertebrata; K-T boundary; Leg 207; lithostratigraphy; lower Paleocene; Maestrichtian; Mandibulata; marine environment; mass extinctions; Mesozoic; microfossils; morphology; North Atlantic; Northwest Atlantic; Ocean Drilling Program; ODP Site 1260; ODP Site 1261; Ostracoda; Paleocene; paleoenvironment; Paleogene; Senonian; stratigraphic boundary; taxonomy; Tertiary; Upper Cretaceous;
.