K_S 1983 48-1.JPG
Lam & Leckie 2020 pl30 17-18.jpg
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K_S 1983 48-1.JPG
Lam & Leckie 2020 pl30 17-18.jpg
Lam & Leckie 2020 pl31 02-3.jpg
Lam & Leckie 2020 pl30 19.jpg
Lam & Leckie 2020 pl30 20.jpg
Lam & Leckie 2020 pl31 01.jpg
Norris98 pl1-20.JPG
Postuma 1971 p315-4.JPG
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Catalog entries: Globorotalia acostaensis, Globorotalia (Turborotalia) acostaensis tegillata
Type images:
holotype: G. acostaensis
holotype: G. acostaensis
holotype: G. acostaensis_USNM625707_holo.jpg)
holotype: G. acostaensis
paratype: G. acostaensisDistinguishing features:
Parent taxon (Neogloboquadrina): Cancellate wall; umbilical-extraumbilical aperture:
This taxon: Like N. continuosa but 5-5½ chambers in final whorl, chambers more inflated, and a wide apertural rim or plate
K_S 1983 47-1.JPGCharacter matrix
| test outline: | Lobate | chamber arrangement: | Trochospiral | edge view: | Equally biconvex | aperture: | Umbilical-extraumbilical |
| sp chamber shape: | Globular | coiling axis: | Low | periphery: | N/A | aperture border: | - |
| umb chbr shape: | Globular | umbilicus: | Wide | periph margin shape: | Broadly rounded | accessory apertures: | None |
| spiral sutures: | Weakly depressed | umb depth: | Deep | wall texture: | Cancellate | shell porosity: | Macroperforate: >2.5µm |
| umbilical or test sutures: | Moderately depressed | final-whorl chambers: | 5.0-5.5 | N.B. These characters are used for advanced search. N/A - not applicable | |||
[SCOR WG138]
Geographic distribution: Tropical to warm subtropical. [Kennett & Srinivasan 1983] Low latitudes [Aze et al. 2011, based on Kennett & Srinivasan (1983)]
Isotope paleobiology: Aze et al. 2011 ecogroup 3 - Open ocean thermocline. Based on light ∂13C and relatively heavy ∂18O. Sources cited by Aze et al. 2011 (appendix S3): Pearson & Shackleton (1995)
Phylogenetic relations: N. acostaensis is distinguished from the phylogenetically unrelated form Gr. (I.) siakensis by its more inflated chambers, low aperture, and distinct apertural plate. N. acostaensis developed from N. continuosa in the earliest Late Miocene by developing more numerous and more inflated chambers in the final whorl and a wide apertural rim or plate. This species is ancestral to N. humerosa. The initial evolutionary appearance of N. acostaensis defines the base of Late Miocene Zone N16. N. acostaensis is restricted to tropical to warm subtropical areas. It seems that this form intergrades with N pachyderma in Late Miocene to early Pliocene sediments in temperate to polar areas (Srinivasan and Kennett, 1976; Kennett and Srinivasan, 1980). [Kennett & Srinivasan 1983]
Most likely ancestor: Paragloborotalia continuosa - at confidence level 3 (out of 5). Data source: Kennett & Srinivasan 1983, fig 21; Aze et al. 2011.
Likely descendants: Neogloboquadrina atlantica; Neogloboquadrina humerosa; Pulleniatina primalis;
plot with descendants
Geological Range:
Last occurrence (top): within PT1a subzone (0.61-1.88Ma, top in Ionian stage). Data source: Chaisson & Pearson (1997)
First occurrence (base): at base of M13a subzone (0% up, 9.8Ma, in Tortonian stage). Data source: Wade et al. (2011), zonal marker
Plot of occurrence data:
Primary source for this page: Kennett & Srinivasan 1983, p.196
Aze, T. et al. (2011). A phylogeny of Cenozoic macroperforate planktonic foraminifera from fossil data. Biological Reviews. 86: 900-927. gs Blow, W. H. (1959). Age, correlation, and biostratigraphy of the upper Tocuyo (San Lorenzo) and Pozon Formations, eastern Falcon, Venezuela. Bulletins of American Paleontology. 39(178): 67-251. gs Brönnimann, P. & Resig, J. (1971). A Neogene globigerinacean biochronologic time-scale of the southwestern Pacific. Initial Reports of the Deep Sea Drilling Project. 7(2): 1235-1469. gs V O Chaisson, W. P. & Pearson, P. N. P. (1997). Planktonic foraminifer biostratigraphy at Site 925: Middle Miocene–Pleistocene. Proceedings of the Ocean Drilling Program, Scientific Results. 154: 3-31. gs V O Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gs Lam, A. & Leckie, R. M. (2020a). Late Neogene and Quaternary diversity and taxonomy of subtropical to temperate planktic foraminifera across the Kuroshio Current Extension, northwest Pacific Ocean. Micropaleontology. 66(3): 177-268. gs Norris, R. D. (1998). Planktonic foraminifer biostratigraphy: Eastern Equatorial Atlantic. Proceedings of the Ocean Drilling Program, Scientific Results. 159: 445-479. gs V O Pearson, P. N. & Shackleton, N. J. (1995). Neogene multispecies planktonic foraminifer stable isotope record, Site 871, Limalok Guyot. Proceedings of the Ocean Drilling Program, Scientific Results. 144: 401-410. gs V O Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs Wade, B. S., Pearson, P. N., Berggren, W. A. & Pälike, H. (2011). Review and revision of Cenozoic tropical planktonic foraminiferal biostratigraphy and calibration to the geomagnetic polarity and astronomical time scale. Earth-Science Reviews. 104: 111-142. gsReferences:
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Neogloboquadrina acostaensis compiled by the pforams@mikrotax project team viewed: 26-5-2022
Short stable page link: https://mikrotax.org/pforams/index.php?id=104173 Go to Archive.is to create a permanent copy of this page - citation notes |