CATALOG OF ORIGINAL DESCRIPTIONS: Globigerinatheka curryi Proto Decima & Bolli 1970

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.


Higher levels: pf_cat -> G -> Globigerinatheka -> Globigerinatheka curryi
Other pages this level: G. barri, G. curryi, G. euganea, G. kutchensis, G. lindiensis, G. subconglobata luterbacheri,

Globigerinatheka curryi

Citation: Globigerinatheka curryi Proto Decima & Bolli 1970
Rank: Species
Type locality: Nariva River, Central Range, Trinidad, W.I.
Type sample and level: Sample K9071 (TTOC 178160), Globorotalia lehneri Zone, Navet Formation,
Holotype Repository: Washington; USNM
Type & figured specimens: Plate 1, Fig. 1-4, Plate 3, Fig. 1-2, Text fig. 1-3a, 38-39b. Holtype is specimen figured in Bolli (1957), PI. 36, Fig. 21a, b, as Globigerapsis kugleri Bolli, Loeblich and Tappan.
Description on pages: 889-894

Linked specimens: USNM-5727 USNM-244921

Current identification/main database link: Globigerinatheka curryi Proto Decima and Bolli 1970


Original Description
Test free, subglobular, early coil low trochospiral with globular chambers increasing moderately in size as added, four to five in the whorl prior to the last two, occasionally three chambers, which are becoming distinctly larger and successively begin to cover the umbilical area. Final inflated chamber slightly larger, same size or slightly smaller than penultimate, completely coveing the umbilical area. Final chamber may also be rudimentary- distinctly smaller than the penultimate, and therefore may be difficult to distinguish from a bulla. One to four small more or less inflated bullae may be present, each covering one of the apertures of the final chamber. Sutures distinct, between last chambers deeply depressed or incised, radial to slightly curved. Wall calcareous, coarsely perforate. Aperture an interiomarginal, umbilical arch, except in the final chamber covering the umbilical area, which has two to four low arched stutral openings usually situated symmetrically above sutures between earlier chambers (as in Globigeriniodes ruber). Whern rudimentary end chamber present, last normal chamber may possess additional apertures. Apertures may be bordered by a faint rim. Bullae with two to three apertures. Strong preference for dextral coiling.

Size: Greatest diameter of holotype 0.56 mm.

Etymology: The species is named for Mr. Dennis Curry in recognition of his contributions to Tertiary stratigraphy and paleontology.

Extra details from original publication
Remarks: The new species differs from Globigerinatheka euganea of which it is the ancestor, in having distinctly more incised sutures, more inflated chambers and consequently a less spherical form of the whole test. The deeper sutures are particularly apparent between the last two or three chambers which are relatively large, and between these chambers and the earlier coil ; therefore, the latter often appears somewhat detached from the final two to three chambers. Every intermediate morphological stage exists between G. curryi and its successor G. euganea.

Though figures of Globigerinatheka kugleri and Globigerinatheka curryi look much alike (e.g.. Bolli, Loeblich and Tappan, 1957, Pl. 6, Fig. 6a-c, and Bolli, 1957, PI. 36, Fig. 21a, b), the latter differs in the distinctly larger size of the test (average 0.5-0.6 mm as against 0.35-0.40 mm), more robust wall structure, and in a more restricted stratigraphie range. The large specimens leading to Globigerinatheka euganea and finally to Orbulinoides beckmanni are no longer to be included in Globigerinatheka kugleri. The new species differs from Globigerinatheka barri in the larger test size and more deeply incised sutures which produce a less spherical test shape. Búllate specimens are not nearly as common as in G. barri.

Stratigraphic range: Globorotalia lehneri Zone to basal part of Orbulinoides beckmanni Zone, Middle Eocene.

References:

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 V O

Bolli, H. M., Loeblich, A. R. & Tappan, H. (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. 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: 3-50. gs V O

Premoli Silva, I., Wade, B. S. & Pearson, P. N. (2006). Taxonomy, biostratigraphy, and phylogeny of Globigerinatheka and Orbulinoides. 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 7): 169-212. gs V O

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


logo

Globigerinatheka curryi compiled by the pforams@mikrotax project team viewed: 26-9-2020

Taxon Search:
Advanced Search

Short stable page link: http://mikrotax.org/pforams/index.php?id=130751 Go to Archive.is to create a permanent copy of this page - citation notes



Comments (0)

No comments yet on this page. Please do add comments if you spot any problems, or have information to share

Add Comment

* Required information
1000
Captcha Image
Powered by Commentics