Globigerinatheka kugleri


Classification: pf_cenozoic -> spinose -> Globigerinidae -> Globigerinatheka -> Globigerinatheka kugleri
Sister taxa: G. barri, G. curryi, G. euganea, G. index, G. korotkovi, G. kugleri, G. luterbacheri, G. mexicana, G. semiinvoluta, G. subconglobata, G. tropicalis, G. sp.,

Taxonomy

Citation: Globigerinatheka kugleri (Bolli, Loeblich & Tappan 1957)
Rank: Species
Basionym: Globigerapsis kugleri
Synonyms:
Taxonomic discussion: As already noted by Bolli (1972), G. luterbacheri resembles G. euganea in general shape and maximum test size of about 0.6 mm. However, G. luterbacheri differs from G. euganea in often having more deeply incised sutures between the last chambers, overall larger and less numerous secondary apertures, and apparently a coarser surface. Bullae that may cover only part of an aperture are rare in G. euganea.
[Premoli Silva et al. 2006]

Catalog entries: Globigerapsis kugleri;

Type images:

Short diagnosis: The more ovoid, somewhat more irregular test and the rather incised sutures distinguish G. luterbacheri from the other large globigerinathekids. Globigerinatheka luterbacheri differs from G. kugleri in its more robust wall and more compact test of larger size, more incised sutures and more numerous secondary apertures and from G. mexicana and G. barri in the more robust wall, the longer spire, more numerous secondary apertures, more incised sutures, and distinctly larger size.

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 more ovoid, somewhat more irregular test and the rather incised sutures distinguish G. luterbacheri from the other large globigerinathekids. Globigerinatheka luterbacheri differs from G. kugleri in its more robust wall and more compact test of larger size, more incised sutures and more numerous secondary apertures and from G. mexicana and G. barri in the more robust wall, the longer spire, more numerous secondary apertures, more incised sutures, and distinctly larger size.
[Premoli Silva et al. 2006]

Wall type: Spinose, cancellate with pores 4-5 mm in diameter. [Premoli Silva et al. 2006]

Test morphology: Test subtriangular in outline, rather lobate; 2 to 3 whorls; initial coil very tight, composed of an unknown number of very small globular chambers; second coil much looser with 4 globular chambers increasing gradually but rather rapidly in size as added; last coil consisting of 4 very rapidly enlarging globular chambers; the antepenultimate chamber is twice as large as the previous one and about half the size of the last formed chamber; sutures in the inner coil initially not visible, then straight and radial, rather depressed; primary aperture an umbilical low arch; two to three rather small arched secondary apertures at the base of the last chamber; primary and secondary apertures may be covered by small slightly inflated bullae. [Premoli Silva et al. 2006]

Size: Greatest diameter of holotype 0.44 mm, greatest thickness 0.47 mm; paratypes range from 0.36 to 0.47 mm in diameter. [Premoli Silva et al. 2006]

Character matrix

test outline:Lobatechamber arrangement:Trochospiraledge view:Equally biconvexaperture:Multiple
umb chamber shape:Globularcoiling axis:Lowperiphery:N/Aaperture border:Coalescing portici
sp chbr shape:Globularumbilicus:N/Aperiph margin shape:Broadly roundedaccessory apertures:Sutural
umbilical or test sutures:Strongly depressedumb depth:N/Awall texture:Spinoseshell porosity:Microperforate: <1
spiral sutures:Strongly depresseddiameter mm:0.44width mm:breadth mm:0.47
final-whorl chambers:4.0-4.0

Biogeography and Palaeobiology


Geographic distribution: According to Toumarkine (1983), G. luterbacheri is common in mid latitudes off the South Atlantic and northern Tethys, but is very rare or absent in tropical regions. [Premoli Silva et al. 2006]
Aze et al. 2011 summary: Low to middle latitudes; based on Premoli Silva et al. (2006)

Isotope paleobiology: No data available. [Premoli Silva et al. 2006]
Aze et al. 2011 ecogroup 1 - Open ocean mixed-layer tropical/subtropical, with symbionts. Based on very heavy δ13C and relatively light δ18O. Sources cited by Aze et al. 2011 (appendix S3): Boersma et al. (1987); Pearson & Palmer (1999)

Phylogenetic relations: Globigerinatheka luterbacheri may have evolved from G. euganea. [Premoli Silva et al. 2006]

Biostratigraphic distribution

Geological Range:
Notes: Middle to upper Eocene. It ranges from within Zone E12 up to the E15/ E16 boundary. [Premoli Silva et al. 2006]
Last occurrence (top): within E13 zone (37.99-39.97Ma, top in Bartonian stage). Data source: Eocene Atlas
First occurrence (base): at base of E9 zone (0% up, 43.9Ma, in Lutetian stage). Data source: zonal marker (Wade et al. 2011)

Plot of occurrence data:

Primary source for this page: Premoli Silva et al. 2006 - Atlas of Eocene Planktonic Foraminifera, chapter 7, p. 190

References:

Blow, W.H. & Banner, F.T., (1962). The mid-Tertiary (Upper Eocene to Aquitanian) Globigerinaceae. In: Eames, F.E. et al. (Editors), Fundamentals of mid-Tertiary Stratigraphical Correlation. Cambridge University Press, Cambridge, pp. 61-151.

Blow, W.H., (1979). The Cainozoic Globigerinida: A study of the morphology, taxonomy, evolutionary relationships and stratigraphical distribution of some Globigerinida (mainly Globigerinacea). E. J. Brill, Leiden, 1413 pp.

Bolli, H.M., (1957). Planktonic foraminifera from the Eocene Navet and San Fernando formations of Trinidad. In: Loeblich, A.R., Jr. et al. (Editors), Studies in Foraminifera: U.S. National Museum Bulletin 215. U.S. Government Printing Office, Washington, D.C., pp. 155-172.

Bolli, H.M., (1972). The genus Globigerinatheka Bronnimann. Journal of Foraminiferal Research, 2(3): 109-136.

Bolli, H.M.; Loeblich, A.R., Jr. & Tappan, H., (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. In: Loeblich, A.R., Jr. et al. (Editors), Studies in Foraminifera, U.S. National Museum Bulletin 215. U.S. Government Printing Office, Washington, DC, pp. 3-50.

Bolli Loeblich & Tappan 1957 [sorry, not in our bibliography yet]

Brönnimann, P., (1952). Globigerinoita and Globigerinatheka, new genera from the Tertiary of Trinidad, B.W.I. Cushman Foundation for Foraminiferal Research, Special Publication, 3(1): 25-28.

Cushman, J.A., (1925). New foraminifera from the Upper Eocene of Mexico. Contributions from the Cushman Foundation for Foraminiferal Reseach, 1(1): 4-9.

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

Loeblich, A.R. & Tappan, H., (1957). Woodringina, a new foraminiferal genus (Heterohelicidae) from the Paleocene of Alabama. Journal of the Washington Academy of Sciences., 47: 39-40.

Loeblich, A.R., Jr. & Tappan, H., (1957). Planktonic foraminifera of Paleocene and early Eocene Age from the Gulf and Atlantic coastal plains. In: Loeblich, A.R., Jr. et al. (Editors), Studies in Foraminifera, U.S. National Museum Bulletin 215. U.S. Government Printing Office, Washington, D.C., pp. 173-198.

Mallory, V.S., (1959). Lower Tertiary biostratigraphy of the California Coast Ranges. American Association of Petroleum Geologists, Tulsa, Oklahoma, 416 pp.

Pearson, P.N. & Palmer, M.R., (1999). Middle Eocene seawater pH and atmospheric carbon dioxide concentrations. Science, 284: 1824-1826.

Premoli Silva, I.; Wade, B.S. & Pearson, P.N., (2006). Taxonomy, biostratigraphy, and phylogeny of Globigerinatheka and Orbulinoides. In: Pearson, P.N. et al. (Editors), Atlas of Eocene Planktonic Foraminifera, Cushman Foundation Special Publication 41. Allen Press, Lawrence, Kansas, pp. 169-212.

Proto Decima, F. & Bolli, H.M., (1970). Evolution and variability of Orbulinoides beckmanni (Saito). Eclogae Geologicae Helvetiae, 63(3): 883-905.

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.

Saito, T., (1962). Eocene planktonic foraminifera from Hahajima (Hillsborough Island). Trans. Proc. Pal. Soc. Japan, 1(45): 209-225.

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

Toumarkine, M., (1983). Les Foraminifères planctoniques de l’Eocène moyen et supérieur des régions tropicales à temperées chaudes. PhD Thesis, Université Pierre et Marie Curie, Paris 6, 83-05, 1-219 pp.

Warraich, M.Y. & Nishi, H., (2003). Eocene planktic foraminiferal biostratigraphy of the Sulaiman range, Indus Basin, Pakistan. Journal of Foraminiferal Research, 33: 219-236.


logo

Globigerinatheka kugleri compiled by the pforams@mikrotax project team viewed: 21-8-2017

Taxon Search:
Advanced Search
AphiaID: not found
Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet. Be the first!

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics