(Appendix A) Abundance of ostracode species from DSDP Hole 48-401 ...
Previous low resolution studies suggest that ostracodes, in contrast with deep sea foraminifera, largely survived the massive environmental changes of the Paleocene–Eocene thermal maximum (PETM). In a new high-resolution study from the continental slope (~1800 m paleodepth) NE Atlantic, we also find...
Main Authors: | , |
---|---|
Format: | Dataset |
Language: | English |
Published: |
PANGAEA
2012
|
Subjects: | |
Online Access: | https://dx.doi.org/10.1594/pangaea.811195 https://doi.pangaea.de/10.1594/PANGAEA.811195 |
Summary: | Previous low resolution studies suggest that ostracodes, in contrast with deep sea foraminifera, largely survived the massive environmental changes of the Paleocene–Eocene thermal maximum (PETM). In a new high-resolution study from the continental slope (~1800 m paleodepth) NE Atlantic, we also find extensive survivorship of ostracode faunas, but this is accompanied by a temporary drop in species diversity and ecological diversity during the PETM. There are 12 common ostracode species before the PETM that are reduced to only two species at the same time as the benthic foraminiferal extinction event. All but three species reappear in the later parts of the PETM and statistical analysis suggests that most of the apparent “Lazarus” species might be found with sufficient sampling of PETM faunas. We find no evidence for an excursion fauna of ostracodes as has been detected in calcareous nannofossils, planktic foraminifera, and benthic foraminifera. However, the ostracode assemblages changed from a relatively ... : Supplement to: Yamaguchi, Tatsuhiko; Norris, Richard D (2012): Deep-sea ostracode turnovers through the Paleocene-Eocene thermal maximum in DSDP Site 401, Bay of Biscay, North Atlantic. Marine Micropaleontology, 86-87, 32-44 ... |
---|