草稿:Pulleniatina obliquiloculata

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Pulleniatina obliquiloculata is one of the two extant species for Pulleniatina, fist occurrence within N19 zone (or PL1, C3n. 1r).^[1]^[2]. Wildly tropical-subtropical marine plankton, pelagic inhabitants of deep waters (lower mesopelagic to upper bathypelagic environment).

Evolution[编辑]

Phylogenetic tree base on morpholoyg shows that P. obliquiloculata differentiated from P. praecursor at Early- middle Pliocene, belonging the obliquiloculata lineage^[1]^[2].

P. obloqulioculata also classified as nonspinose macroperforate, phylogenetic tree base on small sub-unit ribosomal DNA (SSU rDNA) shows that P. obliquiloculata has closely relationship with Neogloboquadrina^[3]^[4]. The genetic relationship of those modern macroperforates are not clear. So far, knowledge about these organisms is very limited.

Geological event[编辑]

There some coiling direction reverse event happens after P. obliquiloculata differentiation, the cause and detailed mechanism are unknown, but it can still be used to assist in the judgment of geological age^[5]

References[编辑]

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^ ^1.0 ^1.1 Banner, F. T., & Blow, W. H. (1967). The origin, evolution and taxonomy of the foraminiferal genus Pulleniatina Cushman, 1927. Micropaleontology, 13(2), 133-162.
^ ^2.0 ^2.1 Pearson, P. N., & Penny, L. (2021). Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. PloS one, 16(4), e0249113.
^ André, A., Quillévéré, F., Morard, R., Ujiié, Y., Escarguel, G., de Vargas, C., ... & Douady, C. J. (2014). SSU rDNA divergence in planktonic foraminifera: molecular taxonomy and biogeographic implications. PLoS One, 9(8), e104641.
^ Aurahs, R., Göker, M., Grimm, G. W., Hemleben, V., Hemleben, C., Schiebel, R., & Kučera, M. (2009). Using the multiple analysis approach to reconstruct phylogenetic relationships among planktonic Foraminifera from highly divergent and length-polymorphic SSU rDNA sequences. Bioinformatics and Biology Insights, 3, BBI-S3334.
^ Pearson, P. N., Young, J., King, D. J., & Wade, B. S. (2023). Biochronology and evolution of Pulleniatina (planktonic foraminifera). Journal of Micropalaeontology, 42(2), 211-255.

[:0-1] 1.0 ^1.1 Banner, F. T., & Blow, W. H. (1967). The origin, evolution and taxonomy of the foraminiferal genus Pulleniatina Cushman, 1927. Micropaleontology, 13(2), 133-162.

[:1-2] 2.0 ^2.1 Pearson, P. N., & Penny, L. (2021). Coiling directions in the planktonic foraminifer Pulleniatina: A complex eco-evolutionary dynamic spanning millions of years. PloS one, 16(4), e0249113.

[3] André, A., Quillévéré, F., Morard, R., Ujiié, Y., Escarguel, G., de Vargas, C., ... & Douady, C. J. (2014). SSU rDNA divergence in planktonic foraminifera: molecular taxonomy and biogeographic implications. PLoS One, 9(8), e104641.

[4] Aurahs, R., Göker, M., Grimm, G. W., Hemleben, V., Hemleben, C., Schiebel, R., & Kučera, M. (2009). Using the multiple analysis approach to reconstruct phylogenetic relationships among planktonic Foraminifera from highly divergent and length-polymorphic SSU rDNA sequences. Bioinformatics and Biology Insights, 3, BBI-S3334.

[5] Pearson, P. N., Young, J., King, D. J., & Wade, B. S. (2023). Biochronology and evolution of Pulleniatina (planktonic foraminifera). Journal of Micropalaeontology, 42(2), 211-255.

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