?Globigerinawilsoni Cole, 1927:34, pl. 4: figs. 8-9 [middle Eocene Zone E10/11, Guayabal Fm., Tampico, Mexico]. Turborotaliawilsoni (Cole). Toumarkine and Luterbacher, 1985:126 (partim; not fig. 27.2-4), fig. 27.1 (reillustration of holotype).
Globorotaloidescarcoselleensis Toumarkine and Bolli, 1975:81, pl. 5: figs. 23-28 (fig. 24 = holotype) [middle Eocene Globorotaliacerroazulensis possagnoensis Zone, Possagno, northern Italy]._Toumarkine, 1975:742, pl. 1: figs. 20-21 [middle Eocene Morozovellalehneri Zone, DSDP Site 313, central Pacific Ocean]._Poore and Brabb, 1977:260, pl. 5: figs. 4, 5 [middle Eocene Zone E13, Twobar Shale Member, San Lorenzo Fm., Santa Cruz Mountains, California]; pl. 7: figs. 1, 2 [upper Eocene Zone E14/16, Twobar Shale Member, San Lorenzo Fm., Santa Cruz Mountains, California]._Toumarkine, 1978:712, pl. 7: figs. 13-18 [middle Eocene Orbulinoidesbeckmanni Zone, DSDP Site 363, Walvis Ridge, South Atlantic Ocean]._Toumarkine and Luterbacher, 1985:150, fig. 41.9-16 (fig. 41.9, 10, reillustration of holotype and paratype), fig. 41.11, 12a-b, 15 [middle Eocene Orbulinoidesbeckmanni Zone, DSDP Site 363, Walvis Ridge, South Atlantic Ocean (figs. 13, 16 from Toumarkine, 1975, pl. 1)], fig. 41.13, 14, 16 [middle Eocene Morozovellalehneri Zone, DSDP Site 313, central Pacific Ocean (figs. 11, 12a-b, 15 from Toumarkine, 1978, pl. 7)]._Poore and Bybell, 1988:18, pl. 1: figs. 4, 5, 7 [middle Eocene Morozovellalehneri Zone, Shark River Fm., ACGS #4 Borehole, New Jersey Coastal Plain].
Taxonomic discussion: There has been considerable confusion regarding the identification of Globigerinawilsoni Cole. Toumarkine and Luterbacher (1985) reillustrated the line drawing of the holotype of Globigerinawilsoni along with three SEM images they identified as that species from the type Guayabal Formation, from where G. wilsoni was described. New SEM images of the holotype of G. wilsoni (Pl.6.19, Figs. 15-17), although poorly preserved, show that it differs from the hypotypes illustrated by Toumarkine and Luterbacher in that the ultimate chamber is more flattened and extends towards and over the umbilicus. In this respect, the holotype appears much more like Turborotaliacarcoselleensis (Toumarkine and Bolli) ( =Turborotalitacarcoselleensis), which is common in the Guayabal Formation. However, the poor state of preservation does not allow an accurate identification, and we place wilsoni in questionable prior synonymy with carcoselleensis. The hypotypes of wilsoni illustrated by Toumarkine and Luterbacher are placed in Parasubbotinapseudowilsoni n. sp. (see discussion under this species in chapter 5). Turborotalitacarcoselleensis differs from P. pseudowilsoni n. sp., which is described from the Guayabal Formation, in the more moderate increase in chamber size and the distinctive ultimate chamber that extends as a narrow, reduced chamber over the umbilicus. [Olsson et al. 2006]
Distinguishing features: Parent taxon (Turborotalita): Minute, with bullate extension of the final chamber, smooth wall, large pores and short conical spines concentrated along the periphery. This taxon: Test small, slightly lobate, with umbilically directed ultimate chamber, and ruber-type cancellate wall texture.
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.
Description
Diagnostic characters: Turborotalitacarcoselleensis is characterized by its small, slightly lobulate test, the umbilically directed ultimate chamber, and the ruber-type cancellate wall texture. [Olsson et al. 2006] Morphology: Test low trochospiral, slightly lobulate in outline, chambers globular; in spiral view 4.5-5 globular, slightly embracing chambers in ultimate whorl, increasing moderately in size, ultimate chamber often reduced in size, sutures moderately depressed, straight; in umbilical view 4.5-5 globular, slightly embracing chambers, increasing moderately in size, ultimate chamber often reduced and directed towards and over the umbilicus, sutures moderately depressed, straight, umbilicus small and often covered by ultimate chamber, aperture umbilical, a wide arch bordered by an imperforate rim or narrow thickened lip; in edge view chambers globular in shape, slightly embracing. [Olsson et al. 2006] Wall type: Normal perforate, spinose, ruber-type, cancellate wall structure, covered by a crust in adult stage. Size: Maximum diameter of holotype 0.27 mm, maximum width of thickness 0.19 mm. [Olsson et al. 2006]
Character matrix
test outline:
Lobate
chamber arrangement:
Trochospiral
edge view:
Inequally biconvex
aperture:
Umbilical
sp chamber shape:
Globular
coiling axis:
Low
periphery:
N/A
aperture border:
Thin lip
umb chbr shape:
Globular
umbilicus:
Narrow
periph margin shape:
Broadly rounded
accessory apertures:
None
spiral sutures:
Strongly depressed
umb depth:
Deep
wall texture:
Spinose
shell porosity:
Finely Perforate: 1-2.5µm
umbilical or test sutures:
Strongly depressed
final-whorl chambers:
4.5-5
N.B. These characters are used for advanced search. N/A - not applicable
Biogeography and Palaeobiology
Geographic distributionWidespread in low to middle latitudes. [Olsson et al. 2006]
Aze et al. 2011 summary: Low to middle latitudes; based on Olsson et al. (2006a) Isotope paleobiologyNo data available. [Olsson et al. 2006] Aze et al. 2011 ecogroup 2 - Open ocean mixed-layer tropical/subtropical, without symbionts. Based on comparison with other species of the genus Phylogenetic relationsThe origin of Turborotalitacarcoselleensis is uncertain. Morphologically it appears closest to Globoturborotalita in the arrangement of chambers around a small umbilicus and in the umbilical aperture. In addition, species of Globoturborotalita are small in size, as is Turborotalita. Globoturborotalitabassriverensis n. sp. is a possible ancestor. [Olsson et al. 2006]
Geological Range: Notes: Toumarkine and Luterbacher (1985) show a range for “Globorotaloides” carcoselleensis from the base of Zone P11 to the upper Eocene in the Possagno section of northern Italy. [Olsson et al. 2006] Last occurrence (top): within E14 zone (35.89-37.99Ma, top in Priabonian stage). Data source: Eocene Atlas First occurrence (base): within E9 zone (43.23-43.85Ma, base in Lutetian stage). Data source: Eocene Atlas
Plot of occurrence data:
Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Primary source for this page: Olsson et al. 2006 - Eocene Atlas, chap. 6, p. 163
References:
Cole, W. S. (1927). A foraminiferal fauna from the Guayabal formation in Mexico. Bulletins of American Paleontology. 14(51): 1-36. 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. gsO
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
Toumarkine, M. & Bolli, H. M. (1975). Foraminifères planktoniques de l'Eocène moyen et supérieur de la coupe de Possagno. Schweizerische Paläontologische Abhandlungen. 97: 69-185. 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
Turborotalita carcoselleensis compiled by the pforams@mikrotax project teamviewed: 26-4-2025
Eocene_Atlas_pl06-19_fig15-17.jpg
Eocene_Atlas_pl06-19_fig4-9-12-13.jpg
Eocene_Atlas_pl06-19_fig6-8.jpg
Eocene_Atlas_pl06-19_fig14.jpg
Eocene_Atlas_pl06-19_fig5.jpg
Eocene_Atlas_pl06-19_fig15-17.jpg
Eocene_Atlas_pl06-19_fig4-9-12-13.jpg
Eocene_Atlas_pl06-19_fig6-8.jpg
Eocene_Atlas_pl06-19_fig14.jpg
Eocene_Atlas_pl06-19_fig5.jpg
holotype: G. carcoselleensis
x: G. carcoselleensis
