pforams@mikrotax - Ciperoella angulisuturalis pforams@mikrotax - Ciperoella angulisuturalis

Ciperoella angulisuturalis

Classification: pf_cenozoic -> Globigerinidae -> Ciperoella -> Ciperoella angulisuturalis
Sister taxa: C. anguliofficinalis, C. angulisuturalis, C. ciperoensis, C. fariasi, C. sp.


Citation: Ciperoella angulisuturalis (Bolli, 1957)
taxonomic rank: species
Basionym: Globigerina ciperoensis angulisuturalis Bolli, 1957
Taxonomic discussion:

This is an easily identified species and its first occurrence is a marker for the lower Oligocene Zone O4 (Wade and others, 2011). We note that C. angulisuturalis is missing from published species lists for the boreal North Sea (Hooybergh and De Meuter, 1972; Hooyberghs and others, 1992), whereas the ancestor C. anguliofficinalis and descendant C. ciperoensis respectively are recorded and illustrated (Rögl, 1969). This suggests that C. angulisuturalis has a more tropical affinity than other members of the genus and may explain the observed diachroneity of the last occurrence (see below). Blow (1969) regarded extreme versions with overly deepened sutures (Blow, 1969; pl. 11, fig. 9; pl. 12, figs. 1 and 2) from Zone N3/P22 (= O6/O7) Sicily as “phylogenetically advanced”. [Olsson et al. 2018]

Catalog entries: Globigerina ciperoensis angulisuturalis

Type images:

Distinguishing features:
Parent taxon (Ciperoella): Like Globoturborotalita, but with distinctive reticulate wall, and 4½-5 chambers in final whorl
This taxon: Like C. ciperoensis but smaller; chambers squared off / wedge-shaped; sutures distinctly depressed; large umbilical aperture.

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.


Moderately low trochospiral, globular, lobulate in outline, chambers globular; in spiral view 5 globular, slightly embracing chambers in ultimate whorl, increasing moderately in size, chambers squared off at sutures, sutures distinctly depressed, straight; in umbilical view 5 globular, slightly embracing chambers, increasing moderately in size, chambers squared off at sutures, sutures distinctly depressed forming steep U-shaped walls between chambers, straight, umbilicus large, open, enclosed by surrounding chambers, aperture umbilical, a rounded arch, bordered by a thin rim; in edge view chambers globular, slightly embracing, initial whorl of chambers slightly elevated. [Olsson et al. 2018]

Wall type:
Normal perforate, spinose, Neogloboquadrina-type wall. Pore concentrations range from around 25-60 pores/50 μm2 test surface area and pore diameters from around 0.9-2.5 μm.

Maximum diameter of holotype 0.18 mm, minimum diameter 0.16 mm, thickness 0.11 mm. [Olsson et al. 2018]

Character matrix
test outline:Lobatechamber arrangement:Trochospiraledge view:Inequally biconvexaperture:Umbilical
sp chamber shape:Trapezoidalcoiling axis:Low-moderateperiphery:N/Aaperture border:Thin lip
umb chbr shape:Trapezoidalumbilicus:Wideperiph margin shape:Broadly roundedaccessory apertures:None
spiral sutures:Moderately depressedumb depth:Deepwall texture:Spinoseshell porosity:Finely Perforate: 1-2.5µm
umbilical or test sutures:Strongly depressedfinal-whorl chambers:4.5-5 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology

Geographic distribution

Widespread in low to mid-latitudes. Rare or absent in high productivity areas. [Olsson et al. 2018]

Isotope paleobiology
Poore and Matthews (1984) and Shackleton and others (1984) record C. angulisuturalis as having isotopic ratios indicative of shallow, mixed-layer habitat. [Olsson et al. 2018]

Phylogenetic relations
Evolved from Ciperoella anguliofficinalis in the lower Oligocene. See the Ciperoella genus introduction for a summary on previous views on the evolutionary pathway. It did not leave any descendants. [Olsson et al. 2018]

Most likely ancestor: Ciperoella anguliofficinalis - at confidence level 4 (out of 5). Data source: .

Biostratigraphic distribution

Geological Range:
Notes: Zone O4 to M2. The FAD of C. angulisuturalis defines the base of Zone O4 (29.4 Ma), and the LAD is within Zone M2 (21.6 Ma) (Berggren and others, 1995; Wade and others, 2011). An earlier LAD in Subzone M1b is recorded in the Indian Ocean and Caribbean by Spezzaferri (1994). Pearson and Chaisson (1997:40) remarked that the datum is difficult to place in the equatorial Atlantic Ocean because of “a combination of abundance fluctuations of “G.” angulisuturalis in the higher part of its range and its susceptibility to dissolution”. [Olsson et al. 2018]
Last occurrence (top): within M2 zone (19.3-21.12Ma, top in Burdigalian stage). Data source: Olsson et al. 2018
First occurrence (base): within O4 zone (28.09-29.18Ma, base in Rupelian stage). Data source: Olsson et al. 2018

Plot of occurrence data:

Primary source for this page: Olsson et al. 2018 - Olig Atlas chap.7 p.220


Baldassini, N., Mazzei, R., Foresi, L. M., Riforgiato, F. & Salvatorini, G. (2013). Calcareous plankton bio-chronostratigraphy of the Maltese Lower Globigerina Limestone member. Acta Geologica Polonica. 63: 105-135. gs

Berggren, W. A. & Pearson, P. N. (2006a). Taxonomy, biostratigraphy, and phylogeny of Eocene Morozovella. 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 11): 343-376. gs O

Berggren, W. A., Kent, D. V., Swisher, I. , C. C. & Aubry, M. -P. (1995b). A revised Cenozoic geochronology and chronostratigraphy. In, Berggren, W. A., Kent, D. V., Aubry, M. -P. & Hardenbol, J. (eds) Geochronology, Time Scales and Global Stratigraphic Correlations. SEPM (Society for Sedimentary Geology) Special Publication No. 54, 129-212. gs

Berggren, W. A., Pearson, P. N., Huber, B. T. & Wade, B. S. (2006b). Taxonomy, biostratigraphy, and phylogeny of Eocene Acarinina. 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 9): 257-326. gs O

Blow, W. H. (1969). Late middle Eocene to Recent planktonic foraminiferal biostratigraphy. In, Bronnimann, P. & Renz, H. H. (eds) Proceedings of the First International Conference on Planktonic Microfossils, Geneva, 1967. E J Brill, Leiden 380-381. gs

Bolli, H. M. & Saunders, J. B. (1985). Oligocene to Holocene low latitude planktic foraminifera. In, Bolli, H. M., Saunders, J. B. & Perch-Neilsen, K. (eds) Plankton Stratigraphy. Cambridge University Press, Cambridge, UK 155-262. gs

Bolli, H. M. (1954). Note on Globigerina concinna Reuss 1850. Contributions from the Cushman Foundation for Foraminiferal Research. 5(1): 1-3. gs

Bolli, H. M. (1957b). Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli & E. Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 97-123. gs

Chaproniere, G. C. H. (1981). Late Oligocene to Early Miocene planktic Foraminiferida from Ashmore Reef no. 1 well, northwest Australia. Alcheringa. 5: 103-131. gs

Cicha, I., Rögl, F., Rupp, C. & Ctyroká, J. (1998). Oligocene-Miocene foraminifera of the central Paratethys. Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft. 549: 1-325. gs

Cifelli, R. (1982). Early Occurrences and some Phylogenetic Implications of Spiny, Honeycomb Textured Planktonic Foraminifera. Journal of Foraminiferal Research. 12(2): 105-115. gs

Hooyberghs, H. J. F. & de Meuter, F. (1972). Biostratigraphy and inter-regional correlation of the Miocene deposits of Northern Belgium based on planktonic foraminifera; the Oligocene-Miocene boundary on the southern edge of the North Sea basin, Brussels. Koninklijke Vlaamse Academie voor Wetenschappen, Letteren en Schone Kunsten van België. -. gs

Hooyberghs, H. J. F., Vercauteren, T., De Meuter, F. & Symons, F. (1992). Foraminiferal studies in the Boom Formation. Belgische Geologische Dienst Professional Paper. 8: 26-. gs

Jenkins, D. G. (1977). Lower Miocene planktonic forminfera from the a borehole in the English Channel. Micropaleontology. 23(3): 297-318. gs

Kennett, J. P. & Srinivasan, M. S. (1983). Neogene Planktonic Foraminifera. Hutchinson Ross Publishing Co., Stroudsburg, Pennsylvania. 1-265. gs

Krasheninnikov, V. A. & Pflaumann, U. (1978). Cretaceous agglutinated foraminifera of the Atlantic Ocean off west Africa (Leg 41, Deep Sea Drilling Project). Initial Reports of the Deep Sea Drilling Project. 41: 565-580. 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

Molina, E. (1979). Oligoceno-Mioceno inferior por media de foraminiferos planctonicos en el sector central de las Cordilleraa Beticas Espana (Tesis doctoral). . 1-342. gs

Olsson, R. K., Hemleben, C., Coxall, H. K. & Wade, B. S. (2018). Taxonomy, biostratigraphy, and phylogeny of Oligocene Ciperoella. 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 7): 215-230. gs

Pearson, P. N. & Berggren, W. A. (2006). Taxonomy, biostratigraphy, and phylogeny of Morozovelloides n. gen. 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 10): 327-342. gs O

Pearson, P. N. & Chaisson, W. P. (1997). Late Paleocene to middle Miocene planktonic foraminifer biostratigraphy, Ceara Rise. Proceedings of the Ocean Drilling Program, Scientific Results. 154: 33-68. gs

Pearson, P. N. & Wade, B. S. (2009). Taxonomy and stable isotope paleoecology of well-preserved planktonic foraminifera from the uppermost Oligocene of Trinidad. Journal of Foraminiferal Research. 39: 191-217. gs

Pearson, P. N. (1995). Planktonic foraminifer biostratigraphy and the development of pelagic caps on guyots in the Marshall Islands group. Proceedings of the Ocean Drilling Program, Scientific Results. 144: 21-59. 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

Postuma, J. A. (1971). Manual of planktonic foraminifera. Elsevier for Shell Group, The Hague. 1-406. gs

Rincón, D. et al. (2007). Eocene–Pliocene planktonic foraminifera biostratigraphy from the continental margin of the southwest Caribbean. Stratigraphy. 4: 261-311. gs

Roetzel, R., Ćorić, S., Galović, I. & Rögl, F. (2006). Early Miocene (Ottnangian) coastal upwelling conditions along the southeastern scarp of the Bohemian Massif (Parisdorf, Lower Austria, Central Paratethys). Beiträge zur Paläontologie. 30: 387-413. gs

Rögl, F. (1969a). Die Foraminiferenfauna aus den Phosphoritsanden von Plesching bei Linz (Oberosterreich) - Ottnangien (Untermiozan). Sonderdruck aus Mitteilungen der Geologischen Gessellschaft in Wien. 213-234. gs

Rögl, F. (1994). Globigerina ciperoensis (Foraminiferida) in the Oligocene and Miocene of the central Paratethys. Annalen des Naturhistorischen Museums in Wien. 96A: 133-159. 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

Spezzaferri, S. (1994). Planktonic foraminiferal biostratigraphy and taxonomy of the Oligocene and lower Miocene in the oceanic record. An overview. Palaeontographia Italica. 81: 1-187. gs

Stainforth, R. M., Lamb, J. L., Luterbacher, H., Beard, J. H. & Jeffords, R. M. (1975). Cenozoic planktonic foraminiferal zonation and characteristics of index forms. University of Kansas Paleontological Contributions, Articles. 62: 1-425. gs O

Toumarkine, M. (1978). Planktonic foraminiferal biostratigraphy of the Paleogene of Sites 360 to 364 and the Neogene of Sites 362A, 363 and 364 Leg 40,. Initial Reports of the Deep Sea Drilling Project. 40: 679-721. 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. gs


Ciperoella angulisuturalis compiled by the pforams@mikrotax project team viewed: 10-12-2023

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