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This research aims to analyze the biostratigraphic age and faunal associations of benthic foraminifera in core PC311.

Quaternary benthic foraminifera of core PC311 atop a seamount in the Magellan Seamounts (western Pacific Ocean)

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This research aims to analyze the biostratigraphic age and faunal associations of benthic foraminifera in core PC311.
Examined planktonic foraminifera and calcareous nannoplankton samples.
Identified biostratigraphic datums from core PC311 at a seamount depth.
Documented diversity measures and faunal transitions over time.
Identified six biostratigraphic datums from planktonic foraminifera and five from calcareous nannofossils.
Diversity of benthic foraminifera declined gradually from ~1.3 Ma to present.
Stilostomellidae and Pleurostomelidae showed significant decreases and disappeared by ~0.7 Ma.
Pseudoparrella obtusa increased in abundance after ~1.3 Ma.

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Biostratigraphic analysis reveals faunal changes in benthic foraminifera, indicating environmental shifts in Quaternary seafloor ecosystems.

Takata et al. (2026) studied this question.

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Biostratigraphic analysis reveals faunal changes in benthic foraminifera, indicating environmental shifts in Quaternary seafloor ecosystems.