Subbotina hagni


Classification: pf_cenozoic -> spinose -> Globigerinidae -> Subbotina -> Subbotina hagni
Sister taxa: S. angiporoides, S. cancellata, S. corpulenta, S. crociapertura, S. eocaena, S. gortanii, S. hagni, S. hornibrooki, S. jacksonensis, S. linaperta, S. patagonica, S. roesnaesensis, S. senni, S. triangularis, S. triloculinoides, S. trivialis, S. utilisindex, S. velascoensis, S. yeguaensis,

Taxonomy

Citation: Subbotina hagni Gohrbandt 1967
Rank: Species
Basionym: Globigerina hagni
Synonyms:
Taxonomic discussion: Gohrbandt (1967) noted that the illustrations of Globigerina eocaena Guembel by Subbotina (1953) corresponded to his new species, although he did not formally place these in synonomy with his new species. He also acknowledged that Hagn and Lindenberg (1966), who selected a neotype for G. eocaena, did not consider Subbotina’s illustrations of G. eocaena to be correctly identified. Subbotina hagni has not been widely recorded by workers, perhaps because it has been generally grouped with S. eocaena populations. We have identified it in the Aragon Formation of Mexico and California, which indicates a widespread distribution for this species. [Olsson et al. 2006]

Catalog entries: Globigerina hagni;

Type images:

Short diagnosis: The species is characterized by its generally large adult size, quadrate test, and globular, embracing, chambers with a low-arched, umbilical-extraumbilical aperture bordered by a thin irregular lip.

NB The short diagnoses are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus. They have initially been copied from the diagnostic characters/distinguishing features sections of the Eocene and Paleocene Atlases, they will be edited as the site is developed.

Description


Diagnostic characters: The species is characterized by its generally large adult size, quadrate test, and globular, embracing, chambers with a low-arched, umbilical-extraumbilical aperture bordered by a thin irregular lip. [Olsson et al. 2006]

Biogeography and Palaeobiology


Geographic distribution: Apparently global in low to mid latitudes. [Olsson et al. 2006]
Aze et al. 2011 summary: Low to middle latitudes; based on Olsson et al. (2006a)

Isotope paleobiology: No data available. [Olsson et al. 2006]
Aze et al. 2011 ecogroup 3 - Open ocean thermocline. Based on light δ13C and relatively heavy δ18O. Sources cited by Aze et al. 2011 (appendix S3): Coxall et al. (2000)

Phylogenetic relations: Subbotina hagni belongs to a group of closely related Eocene large-sized subbotinids, which includes S. eocaena and S. corpulenta. It probably evolved from S. eocaena by an increase in number of chambers in the ultimate whorl and the development of a more quadrate-shaped test. [Olsson et al. 2006]

Biostratigraphic distribution

Geological Range:
Notes: Zone E7 to Zone 16. [Olsson et al. 2006]
Last occurrence (top): within E16 zone (33.90-34.68Ma, top in Priabonian stage). Data source: Eocene Atlas
First occurrence (base): within E7 zone (45.72-50.20Ma, base in Ypresian stage). Data source: Eocene Atlas

Plot of occurrence data:

Primary source for this page: Olsson et al. 2006 - Atlas of Eocene Planktonic Foraminifera, chapter 6, p. 142

References:

Gohrbandt, K.H.A., (1967). Some new planktonic foraminiferal species from the Austrian Eocene. Micropaleontology, 13(3): 319-326.

Guembel, C.W., (1868). Beitrage zur Foraminiferenfauna der nordalpinen Eocangebilde. . K Bayer Akad Wiss Muchen, Math-Physik Cl, Abh, 10(2): 5811-730.

Hagn & Lindenberg 1966 [sorry, not in our bibliography yet]tep

Olsson, R.K.; Hemleben, C.; Huber, B.T. & Berggren, W.A., (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Globigerina, Globoturborotalita, Subbotina, and Turborotalita. In: Pearson, P.N. et al. (Editors), Atlas of Eocene Planktonic Foraminifera, Cushman Foundation Special Publication 41. Allen Press, Lawrence, Kansas, pp. 111-168.

Olsson, R.K.; Pearson, P.N. & Huber, B.T., (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene Catapsydrax, Globorotaloides, Guembelitrioides, Paragloborotalia, Parasubbotina, and Pseudoglobigerinella n. gen. In: Pearson, P.N. et al. (Editors), Atlas of Eocene Planktonic Foraminifera, Cushman Foundation Special Publication 41. Cushman Foundation Special Publication. Allen Press, Lawrence, Kansas, pp. 67-110.

Poore, R.Z. & Brabb, E.E., (1977). Eocene and Oligocene planktonic foraminifera from the Upper Butano sandstone and type San Lorenzo formation, Santa Cruz Mountains, California. Journal of Foraminiferal Research, 7(4): 249-272.

Toumarkine, M. & Luterbacher, H. (Editors), (1985). Paleocene and Eocene planktic foraminifera. Plankton Stratigraphy. Cambridge Univ. Press, Cambridge, 87-154 pp.

Warraich, M.Y. & Ogasawara, K., (2001). Tethyan Paleocene-Eocene planktic foraminifera from the Rakhi Nala and Zinda Pir land sections of the Sulaiman Range, Pakistan. Science Reports of the Institute of Geosciences, University of Tsukuba, Section B = Geological Sciences, 22: 1-59.


Subbotina hagni compiled by the pforams@mikrotax project team viewed: 24-3-2017

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