CATALOG OF ORIGINAL DESCRIPTIONS: Globorotalia lenguaensis Bolli 1957

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 -> Globorotalia -> Globorotalia lenguaensis
Other pages this level: << < G. inconspicua aculeata, G. inflata, G. inflata praeinflata, G. inflata triangula, G. insolita, G. involuta, G. irrorata, G. juanai, G. kilabiyaensis, G. kingmai, G. kolchidica, G. kotucensis, G. kugleri, G. lacerti, G. lehneri, G. lenguaensis, G. lensiformis, G. lensiformis carpatica, G. lenticularis, G. limbata conferta, G. limbata consutila, G. limbata latiumbilicata, G. limbata oregope, G. lobata, G. loeblichi, G. lupeae, G. magnifica, G. margaritae, G. margaritae evoluta, G. margaritae primitiva, G. marginaculeata, > >>

Globorotalia lenguaensis

Citation: Globorotalia lenguaensis Bolli 1957
Rank: Species
Type locality: Holotype (USNM P5681) from the type locality of the Globorotalia menardii zone, Trinidad, sample KR 23425 (TTOC 178890).
Type age: Globorotalia menardii zone
Holotype Repository: Washington; USNM
Type & figured specimens: Holotype P5681

Linked specimens: USNM-5681

Current identification/main database link: Globorotalia lenguaensis Bolli, 1957


Original Description
Shape of test low trochospiral; equatorial periphery almost circular, not or only very slightly lobate; axial periphery angular to subangular, often with a faint keel. Wall calcareous, finely perforate, surface smooth. Chambers strongly compressed; 15-20, arranged in 2½-3 whorls; the 6-7 chambers of the last whorl increase moderately in size. Sutures on spiral side strongly curved, occasionally slightly depressed; on umbilical side radial to slightly sigmoidal, depressed. Umbilicus very narrow, almost closed. Aperture a low arch often with a lip; interiomarginal, umbilical-extraumbilical. Coiling apparently random in the Globorotalia mayeri zone; almost exclusively sinistral in the Globorotalia menardii zone.

Size: Largest diameter of holotype 0.3 mm.

Extra details from original publication
Stratigraphic range (in Lengua formation): Globorotalia mayeri zone to Globorotalia menardii zone.

Remarks: Globorotalia lenguaensis, new species, re sembles O. canariensis var. minima Akers but differs in its less convex umbihcal side and more circular equa- torial periphery. G. canariensis var. minima has been described from the Cibicides carstensi var. opimus zone (Globorotalia fohsi barisanensis zone to Globorotalia fohsi fohsi zone of the Cipero formation) , whereas Globorotalia lenguaensis is restricted to the Lengua formation. The new species differe from G. menardii d'Orbigny) in its smaller size, less lobate and more circular equatorial periphery.

References:

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 V O


logo

Globorotalia lenguaensis compiled by the pforams@mikrotax project team viewed: 1-10-2020

Taxon Search:
Advanced Search

Short stable page link: http://mikrotax.org/pforams/index.php?id=131167 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