Coiling directions in some Miocene planktonic Foraminifera

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doi: 10.1144/jm.20.1.29
Author(s): Winter, Chris J.; Pearson, Paul N.
Author Affiliation(s): Primary:
University of Bristol, Department of Earth Sciences, Bristol, United Kingdom
Volume Title: Journal of Micropalaeontology
Source: Journal of Micropalaeontology, Vol.20(Part 1), p.29-30. Publisher: British Micropalaeontological Society, London, United Kingdom. ISSN: 0262-821X
Note: In English. 7 refs.; illus.
Summary: We have measured the coiling directions of approximately 14,000 Miocene planktonic Foraminifera shells belonging to three lineages (Dentoglobigerina altispira, Paragloborotalia mayeri and Fohsella spp.) from sites in the Pacific (ODP Site 871) and Atlantic (ODP Site 925) oceans. Stratigraphic patterns in the preferred direction of coiling of these forms are assessed, and their potential utility for biostratigraphic correlation is discussed. We find that all three lineages show a transition from approximately random coiling (although with a slight discernible sinistral bias in D. altispira) to sinistral predominance in both oceans, although the timing and pattern of change is different in each case.
Year of Publication: 2001
Research Program: ODP Ocean Drilling Program
Key Words: 12 Stratigraphy, Historical Geology and Paleoecology; Atlantic Ocean; Biologic evolution; Biostratigraphy; Cenozoic; Coiling; Dentoglobigerina altispira; Fohsella; Foraminifera; Index fossils; Invertebrata; Leg 144; Leg 154; Microfossils; Miocene; Morphology; Neogene; ODP Site 871; ODP Site 925; Ocean Drilling Program; Pacific Ocean; Paragloborotalia mayeri; Phylogeny; Planktonic taxa; Protista; Tertiary
Coordinates: N053326 N053326 E1722040 E1722040
N041215 N041216 W0432920 W0432922
Record ID: 2001076869
Copyright Information: GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from The Geological Society, London, London, United Kingdom