Catalog entries: Globorotalia cocoaensis
Type images:Distinguishing features:
Parent taxon (Turborotalia): Trochospiral with umbilical-extraumbilical aperture.
Wall smooth pustulose, can be weakly cancellate, & may defoliate.
This taxon: Like T. cerroazulensis but final chamber has a distinctly acute periphery in edge view.
Morphology:
Wall type:
Size:
Character matrix
test outline: | Subcircular | chamber arrangement: | Trochospiral | edge view: | Inequally biconvex | aperture: | Umbilical-extraumbilical |
sp chamber shape: | Crescentic | coiling axis: | Low-moderate | periphery: | Imperforate band | aperture border: | Thin lip |
umb chbr shape: | Subtriangular | umbilicus: | Narrow | periph margin shape: | Subangular | accessory apertures: | None |
spiral sutures: | Flush | umb depth: | Deep | wall texture: | Moderately pustulose | shell porosity: | Finely Perforate: 1-2.5µm |
umbilical or test sutures: | Weakly depressed | final-whorl chambers: | 4-5 | N.B. These characters are used for advanced search. N/A - not applicable |
Geographic distribution
Aze et al. 2011 summary: Cosmopolitan; based on Pearson et al. (2006)
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 et al. (2007)
Phylogenetic relations
[Pearson et al. 2006]
Most likely ancestor: Turborotalia cerroazulensis - at confidence level 4 (out of 5). Data source: Pearson et al. (2006), fig 15.1.
Likely descendants: Turborotalia cunialensis;
plot with descendants
Geological Range:
Notes: Middle Eocene, upper Zone E13 to just below the Eocene/Oligocene boundary (Zone E16) (Toumarkine and Bolli, 1970; Coccioni and others, 1988). [Pearson et al. 2006]
Last occurrence (top): in upper part of E16 zone (80% up, 34.1Ma, in Priabonian stage). Data source: Pearson et al. (2006), fig. 15.1
First occurrence (base): in upper part of E13 zone (70% up, 38.6Ma, in Bartonian stage). Data source: Pearson et al. (2006), fig. 15.1
Plot of occurrence data:
Primary source for this page: Pearson et al. 2006 - Eocene Atlas, chap. 15, p. 446
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The Cainozoic Globigerinida: A study of the morphology, taxonomy, evolutionary relationships and stratigraphical distribution of some Globigerinida (mainly Globigerinacea). E. J. Brill, Leiden. 2: 1-1413. gs Bolli, H. M. (1957a). Planktonic foraminifera from the Eocene Navet and San Fernando formations of Trinidad. 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: 155-172. gs Coccioni, R., Monaco, P., Monechi, S., Nocchi, M. & Parisi, G. (1988). Biostratigraphy of the Eocene-Oligocene boundary at Massignano, (Ancona, Italy). In, Premoli Silva, I., Coccioni, R. & Montanari, A. (eds) The Eocene-Oligocene Boundary in the Marche-Umbria Basin (Italy). International Subcommission on Paleogene Stratigraphy, Ancona 59-80. gs Cole, W. S. (1928). A foraminiferal fauna from the Chapapote formation in Mexico. Bulletins of American Paleontology. 14(53): 1-32. gs Cushman, J. A. (1928c). Foraminiferes du Stampien du Bassin de Paris. Bulletin de la Société des Sciences de Seine-et-Oise. 9: 47-63. gs Cushman, J. A. (1935). Upper Eocene Foraminifera of the Southeastern United States. U.S. Geological Survey, Professional Paper. 181: 1-88. gs O Eckert, H. R. (1963). Die obereeozaen Globigerinen-Schiefer (Stadund Schimbergerschiefer) zwischen Pilatus und Schrattenfluh. Eclogae Geologicae Helvetiae. 56: 1001-1072. gs O Howe, H. V. & Wallace, W. E. (1932). Foraminifera of the Jackson Eocene at Danville Landing on the Ouachita, Catahoula Parish, Louisiana. Bulletin of the Geological Survey of Louisiana. 2: 1-118. gs Luterbacher, H. P. (1964). Studies in some Globorotalia from the Paleocene and Lower Eocene of the Central Apennines. Eclogae Geologicae Helvetiae. 57: 631-730. gs O Nishi, H. & Chaproniere, G. C. H. (1994). Eocene-Oligocene subtropical planktonic foraminifers at Site 841,. Proceedings of the Ocean Drilling Program, Scientific Results. 135: 245-266. gs Pearson, P. N. & Wade, B. S. (2015). Systematic taxonomy of exceptionally well-preserved planktonic foraminifera from the Eocene/Oligocene boundary of Tanzania. Cushman Foundation for Foraminiferal Research, Special Publication. 45: 1-85. gs Pearson, P. N., Premec-Fucek, V. & Premoli Silva, I. (2006b). Taxonomy, biostratigraphy, and phylogeny of Eocene Turborotalia. 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 15): 433-460. gs O Pijpers, P. J. (1933). Geology and paleontology of Bonaire (D.W.I.). University of Utrecht Geographischeen Geologische Mededeelingen. 8: 1-103. gs 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 Pujol, C. (1983). Cenozoic planktonic foraminiferal biostratigraphy of the South-Western Atlantic (Rio Grande Rise): Deep Sea Drilling Project Leg 72. Initial Reports of the Deep Sea Drilling Project. 72: 623-673. gs Saakyan-Gezalyan, N. A. (1957). Foraminifer y tretichny khotlozhenii Erevanskogo basseina [Foraminifers of Tertiary deposits of the Yerevan Basin], Erevan. Akademiya Nauk Armyansk SSR, Geologicheskii Institut. 1-141. gs O Snyder, S. W. & Waters, V. J. (1985). Cenozoic planktonic foraminiferal biostratigraphy of the Goban Spur Region, Deep Sea Drilling Project Leg 80. Initial Reports of the Deep Sea Drilling Project. 80: 439-472. gs Toumarkine, M. & Bolli, H. M. (1970). Evolution de Globorotalia cerroazulensis (Cole) dans l'Eocene moyen et superieur de Possagno (Italie). Revue de Micropaléontologie. 13(3): 131-145. gs Toumarkine, M. & Luterbacher, H. (1985). Paleocene and Eocene planktic foraminifera. In, Bolli, H. M., Saunders, J. B. & Perch-Neilsen, K. (eds) Plankton Stratigraphy. Cambridge Univ. Press, Cambridge 87-154. gs Toumarkine, M. (1975). Middle and Late Eocene planktonic foraminifera from the northwestern Pacific Ocean: Leg 32 of the Deep Sea Drilling Project. Initial Reports of the Deep Sea Drilling Project. 32: 735-751. gs 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. & Kroon, D. (2002). Middle Eocene regional climate instability: Evidence from the western North Atlantic. Geology. 30: 1011-1014. gsReferences:
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Turborotalia cocoaensis compiled by the pforams@mikrotax project team viewed: 6-2-2025
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