pforams@mikrotax - Subbotina angiporoides pforams@mikrotax - Subbotina angiporoides

Subbotina angiporoides

Classification: pf_cenozoic -> Globigerinidae -> Subbotina -> Subbotina angiporoides
Sister taxa: S. projecta, S. tecta, S. jacksonensis, S. corpulenta, S. eocaena, S. gortanii, S. crociapertura, S. yeguaensis, S. senni, S. roesnaesensis ⟩⟨ S. utilisindex, S. angiporoides, S. minima, S. linaperta, S. patagonica ⟩⟨ S. cancellata, S. hornibrooki, S. velascoensis, S. triloculinoides, S. triangularis, S. trivialis, S. sp.


Citation: Subbotina angiporoides (Hornibrook 1965)
taxonomic rank: Species
Basionym: Globigerina angiporoides
Taxonomic discussion:

Globigerina angipora Stache was described from sediments collected from the lower Oligocene (according to Hornibrook, 1965) Whaingaroa siltstone of New Zealand (Stache, 1865:287, pl. 24, fig. 36a-b). Unfortunately the description and illustrations are poor by modern standards and according to Hornibrook (1965), subsequent New Zealand taxonomists (following Finlay, 1939) identified a different form under the same name. Hornibrook (1965) declared angipora a nomen dubium and erected angiporoides to incorporate those forms previously described as angipora. A full discussion of this species was provided by Olsson and others (2006). The species is a common component of early Oligocene high latitude assemblages. Olsson and others (2006) considered Subbotina angiporoides minima (Jenkins) to be a junior synonym of Subbotina angiporoides (Hornibrook), however here we recognize Subbotina minima as a distinct species. [Wade et al. 2018]

Hornibrook (1961) used the name Globigerina angipora Stache, 1865 for a taxon resembling Stache’s figures. Later, after it was confirmed that Stache’s specimens were lost he declared the species a nomen dubium and erected the name angiporoides for this taxon. The species is a common element of middle Eocene-early Oligocene austral assemblages and its extinction has been used to define the top of the Globigerina angiporoides Zone of Jenkins (1966) and the Subbotina angiporoides Zone (Zone AP13) of Stott and Kennett (1990). Jenkins (1966) distinguished Globigerina angiporoides minima as an ancestral form that is smaller and less tightly coiled with a more open umbilicus and more inflated chambers. However, these forms are very difficult to distinguish consistently and, they are here considered synonymous. Morphologic overlap of these forms is revealed by similarity of the more loosely coiled paratype of G. angiporoides (Pl.6.6, Fig. 5) with the holotype of G. angiporoides minima (Pl.6.6, Figs. 9-11) and similarity of the more tightly coiled paratype of G. angiporoides minima (Pl.6.6, Fig. 8) with the holotype of G. angiporoides (Pl.6.6, Figs. 1-3).
Blow (1979, p. 1253-1255) distinguished Subbotina angiporoides lindiensis from S. angiporoides s.str. by its less tightly coiled, less closely appressed, and less embracing chambers. Unlike S. angiporoides s.str., the final chambers of Blow’s illustrated paratypes of S. angiporoides lindiensis, though broken, are kummerform and positioned adjacent to, rather than over, the umbilicus. The holotype of S. angiporoides lindiensis, which was originally illustrated as Globigerina linaperta pseudoeocaena (Subbotina) by Blow and Banner (1962, pl. 11, fig. M) is very similar to Blow’s paratypes, except for the absence of a kummerform chamber. The chamber arrangement and presence of a broad apertural lip on all forms of Blow’s subspecies suggest that it is more closely related to Subbotina yeguaensis (Weinzierl and Applin) than to S. angiporoides. [Olsson et al. 2006]

Catalog entries: Globigerina angiporoides, Globigerina linaperta transdanubica

Type images:

Distinguishing features:
Parent taxon (Subbotina): Low trochospiral, tripartite test, with 3-4 rapidly inflating, globular chambers in final whorl. Umbilicus nearly closed by tight coiling. Wall cancellate with spines at nodes of the ridges, +/- spine collars.
This taxon: Like S. linaperta but chambers more globular and final chamber usually strongly embracing, resembling a bulla and extending over the umbilicus.

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.


“Test small to moderate size, non-umbilicate, spherical, quadrilobate, axial periphery rounded; chambers inflated, increasing moderately in size, 11-13 coiled in 3 whorls, usually 4 chambers in the final whorl that are often elongated along the radial axis; final chamber usually strongly embracing, kummerform, and extended over the umbilical sutures; sutures weakly depressed, radial to slightly curved; aperture a low, indistinct, interiomarginal slit bordered by a thick lip that extends the full width of the chamber face, opening in and sometimes beyond the umbilical area” (Olsson and others, 2006:126). [Wade et al. 2018]

Wall type:
Spinose, normal perforate, moderately cancellate, often thickened by addition of gametogenetic calcite, ruber/sacculifer-type wall. [Wade et al. 2018]

Holotype maximum diameter 0.45 mm; hypotype size range 0.45 to 0.55 mm. [Wade et al. 2018]

Character matrix
test outline:Subquadratechamber arrangement:Trochospiraledge view:Equally biconvexaperture:Umbilical-extraumbilical
sp chamber shape:Globularcoiling axis:Highperiphery:N/Aaperture border:Thick lip
umb chbr shape:Globularumbilicus:N/Aperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Moderately depressedumb depth:N/Awall texture:Spinoseshell porosity:Finely Perforate: 1-2.5µm
umbilical or test sutures:Moderately depressedfinal-whorl chambers:4-4 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Geographic distribution

Cosmopolitan, generally considered a high latitude form, but also recorded from low latitudes, e.g., Gulf of Mexico (Spezzaferri and Premoli Silva, 1991) and Tanzania (Blow, 1979). [Wade et al. 2018]

Isotope paleobiology
“Poore and Matthews (1984) recorded lower Oligocene samples with _18O values intermediate between other species from DSDP Site 522” (Olsson and others, 2006:129). It is generally considered to be a cool water taxon due to its prevalence in high latitudes (Spezzaferri and Premoli Silva, 1991). [Wade et al. 2018]
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): Poore & Matthews (1984); Coxall et al. (2000)

Phylogenetic relations
Descended from S. minima during the middle Eocene, perhaps close to the Zone P13/14 (now Zone E12/E13) boundary (Blow, 1979). [Wade et al. 2018]

Most likely ancestor: Subbotina minima - at confidence level 4 (out of 5). Data source: Wade et al. 2018.

Biostratigraphic distribution

Geological Range:
Notes: The first appearance datum of S. angiporoides marks the base of middle Eocene Zone AE7 (Huber and Quillévéré, 2005). [Wade et al. 2018 NB base AE7 is equivalent to base E11] The extinction of S. angiporoides has been used as a primary biostratigraphic marker in the high latitude zonations of Jenkins (1966) and Stott and Kennett (1990) and is used to define the base of Zone OL4 in Poore (1984) and the base of Zone AO2 in Huber and Quillévéré (2005). Subbotina angiporoides is a secondary marker in the tropical zonations of Berggren and others (1995) and Wade and others (2011). The last appearance datum is within lower Oligocene Zone O3 and calibrated to Chron C11n in multiple sites (Berggren and others, 1995). [Wade et al. 2018]
Last occurrence (top): within O3 zone (29.18-30.28Ma, top in Rupelian stage). Data source: Wade et al. 2018
First occurrence (base): within E11 zone (40.40-41.89Ma, base in Lutetian stage). Data source: Eocene Atlas

Plot of occurrence data:

Primary source for this page: Wade et al. 2018 - Olig Atlas chap.10 p.309; Olsson et al. 2006 - Eocene Atlas, chap. 6, p. 126


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Finlay, H. J. (1939b). New Zealand foraminifera: Key species in stratigraphy - no. 2. Transactions of the Royal Society of New Zealand. 69(1): 89-128. gs

Finlay, H. J. (1939c). New Zealand foraminifera: Key species in stratigraphy - no. 3. Transactions of the Royal Society of New Zealand. 69(3): 309-329. gs

Gallagher, S. J. & Holdgate, G. (2000). The palaeogeographic and palaeoenvironmental evolution of a Palaeogene mixed carbonate–siliciclastic cool-water succession in the Otway Basin, Southeast Australia. Palaeogeography Palaeoclimatology Palaeoecology. 156: , 19-50. gs

Hornibrook, N. d. B. (1961). Tertiary Foraminifera from Oamaru District (N.Z.). Part 1 Systematics and distribution. New Zealand Geological Survey, Paleontological Bulletin. 34(1): 1-192. gs

Hornibrook, N. d. B. (1965). Globigerina angiporoides n. sp. from the Upper Eocene and Lower Oligocene of New Zealand and the status of Globigerina angipora Stache, 1865. New Zealand Journal of Geology and Geophysics. 8(5): 834-838. gs

Huber, B. T. & Quillévéré, F. (2005). Revised Paleogene planktic foraminiferal biozonation for the Austral Realm. Journal of Foraminiferal Research. 35: 299-314. gs

Huber, B. T. (1991c). Paleogene and Early Neogene Planktonic Foraminifer Biostratigraphy of Sites 738 and 744, Kerguelen Plateau (Southern Indian Ocean). Proceedings of the Ocean Drilling Program, Scientific Results. 119: 427-449. gs

Jenkins, D. G. (1966b). Planktonic foraminiferal zones and new taxa from the Danian to lower Miocene of New Zealand. New Zealand Journal of Geology and Geophysics. 8 [1965](6): 1088-1126. gs

Jenkins, D. G. (1971). New Zealand Cenozoic Planktonic Foraminifera. New Zealand Geological Survey, Paleontological Bulletin. 42: 1-278. gs

Krasheninnikov, V. A. & Basov, I. A. (1983). Stratigraphy of Cretaceous sediments of the Falkland Plateau based on planktonic foraminifers, Deep Sea Drilling Project, Leg 71. Initial Reports of the Deep Sea Drilling Project. 71: 789-820. gs

Leckie, R. M., Farnham, C. & Schmidt, M. G. (1993). Oligocene planktonic foraminifer biostratigraphy of Hole 803D (Ontong Java Plateau) and Hole 628A (Little Bahama Bank), and comparison with the southern high latitudes. Proceedings of the Ocean Drilling Program, Scientific Results. 130: 113-136. gs

Li, Q., McGowran, B. & James, N. P. (2003b). Eocene–Oligocene planktonic forminiferal biostratigraphy of Sites 1126, 1130, 1132, and 1134, ODP Leg 182, Great Australian Bight. Proceedings of the Ocean Drilling Program, Scientific Results. 182: 1-28. gs

Loubere, P. (1985). Population diversity of planktonic foraminifers and stable isotope record across the Eocene/Oligocene boundary: Hole 549A. Initial Reports of the Deep Sea Drilling Project. 80: 557-566. gs

Nocchi, M., Amici, E. & Premoli Silva, I. (1991). Planktonic foraminiferal biostratigraphy and paleoenvironmental interpretation of Paleogene faunas from the subantarctic transect, Leg 114. Proceedings of the Ocean Drilling Program, Scientific Results. 114: 233-273. gs

Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (2006a). Taxonomy, biostratigraphy, and phylogeny of Eocene Globigerina, Globoturborotalita, Subbotina, and Turborotalita. In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 41(Chap 6): 111-168. gs O

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. gs

Poore, R. Z. & Bybell, L. M. (1988). Eocene to Miocene biostratigraphy of New Jersey Core ACGS #4: Implications for regional stratigraphy. U.S. Geological Survey Bulletin. 1829: 1-41. gs

Poore, R. Z. & Matthews, R. K. (1984). Oxygen isotope ranking of late Eocene and Oligocene planktonic foraminifers: implications for Oligocene sea-surface temperatures and global ice-volume. Marine Micropaleontology. 9: 111-134. gs

Poore, R. Z. (1984). Middle Eocene through Quaternary planktonic foraminifers from the southern Angola Basin: Deep Sea Drilling Project Leg 73,. Initial Reports of the Deep Sea Drilling Project. 73: 429-448. gs

Quilty, P. G. (1976). Planktonic foraminifera DSDP Leg 34, Nazca Plate. Initial Reports of the Deep Sea Drilling Project. 34: 629-703. gs O

Samuel, O. (1972b). Planktonic Foraminifera from the Eocene in the Bakony mountains (Hungary). Zborník geologických vied, séria Západné Karpaty. 17: 165-206. gs

Spezzaferri, S. & Premoli Silva, I. (1991). Oligocene planktonic foraminiferal biostratigraphy and paleoclimatic interpretation from Hole 538A, DSDP Leg 77, Gulf of Mexico. Palaeogeography Palaeoclimatology Palaeoecology. 83: 217-263. gs

Stache, G. (1865). Foraminiferen aus den tertiaren Mergeln des Whaingaroa-Hafens (Provinz Auckland). In, von Hochstetter, F., Hornes, M. & Ritter von Hauer, F. (eds) Paläontologie von Neu-Seeland. Beiträge zur kenntniss der fossilen flora und fauna der provinzen Auckland und Nelson. Novara Expedition 1857-59 Report, Wien . 160-303. gs O

Stott, L. D. & Kennett, J. P. (1990). The Paleoceanographic and Paleoclimatic signature of the Cretaceous/Paleogene boundary in the Antarctic: Stable isotopic results from ODP Leg 113. Proceedings of the Ocean Drilling Program, Scientific Results. 113: 829-848. gs

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Wade, B. S., Olsson, R. K., Pearson, P. N., Edgar, K. M. & Premoli Silva, I. (2018b). Taxonomy, biostratigraphy, and phylogeny of Oligocene Subbotina. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 46(Chap 10): 307-330. gs


Subbotina angiporoides compiled by the pforams@mikrotax project team viewed: 20-6-2024

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