A resolution for the coiling direction paradox in Neogloboquadrina pachyderma

Darling, Kate F.; Kucera, Michal; Kroon, Dick; Wade, Christopher M.

Abstract

We present new data on genotypic differences and biogeographic distribution of coiling types in the living planktonic foraminiferal morphospecies Neogloboquadrina pachyderma. The genetic evidence demonstrates that coiling direction in N. pachyderma is a genetic trait, heritable through time, and is not a morphological feature reflecting ecophenotypic variation. The two opposite coiling morphotypes appear to have diverged during the late Miocene, and they have distinctly different ecologies. In combination with fossil evidence, biogeography, and ecology the degree of genetic distinction between the two coiling types of N. pachyderma strongly implies that they should be considered different species. We propose the adoption of the widely recognized name N. incompta for the right coiling morphospecies. The genetic evidence also demonstrates a low level (

Citation

Darling, K. F., Kucera, M., Kroon, D., & Wade, C. M. (2006). A resolution for the coiling direction paradox in Neogloboquadrina pachyderma. Paleoceanography, 21(2), Article PA2011. https://doi.org/10.1029/2005PA001189

• Journal Article Type: Article
• Acceptance Date: Jan 24, 2006
• Online Publication Date: May 16, 2006
• Publication Date: Jun 1, 2006
• Deposit Date: Aug 9, 2022
• Journal: Paleoceanography
• Print ISSN: 0883-8305
• Electronic ISSN: 1944-9186
• Publisher: American Geophysical Union
• Peer Reviewed: Peer Reviewed
• Volume: 21
• Issue: 2
• Article Number: PA2011
• DOI: https://doi.org/10.1029/2005PA001189
• Public URL: https://nottingham-repository.worktribe.com/output/3189082
• Publisher URL: https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2005PA001189