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.
Linked specimens: USNM-5066
Current identification/main database link: Subbotina velascoensis (Cushman 1925)
See also: Globorotalia (Turborotalia) hansbollii ;Globigerina velascoensis compressa ;
Original Description
Size:
Extra details from original publication
Remarks: White (1928) described an identical form from Mexico under the name Globigerina velascoensis var. compressa. The interiomarginal, extraumbilical-umbilical position of the aperture places it within the genus Globorotalia where it becomes a homonym of G. compressa (Plummer). For this reason the new name G. tortiva is proposed. G. tortiva possibly branched off from Globigerina velascoensis which has less compressed chambers and an umbilical position of the apertures.
Editors' Notes
Loeblich & Tappan (1957) considered the speciemen of White (& thus the holotype of tortiva) to be different to the concept and illustratration of Bolli 1957.
Blow & Banner (1962) described another species G. (Turborotalia) hansbolli based on the species decription given by Bolli for G. tortiva.
Blow, W. H. & Banner, F. T. (1962). The mid-Tertiary (Upper Eocene to Aquitanian) Globigerinaceae. In, Eames, F. E., Banner, F. T., Blow, W. H. & Clarke, W. J. (eds) Fundamentals of mid-Tertiary Stratigraphical Correlation. Cambridge University Press, Cambridge 61-151. gs Bolli, H. M. (1957d). The genera Globigerina and Globorotalia in the Paleocene-Lower Eocene Lizard Springs Formation 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: 61-82. gs Loeblich, A. R. & Tappan, H. (1957b). Planktonic foraminifera of Paleocene and early Eocene Age from the Gulf and Atlantic coastal plains. 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: 173-198. gs White, M. P. (1928). Some Index Foraminifera of the Tampico Embayment Area of Mexico. Journal of Paleontology. 2(3): 177-215. gsReferences:
![]() |
Globorotalia tortiva compiled by the pforams@mikrotax project team viewed: 10-12-2023
Short stable page link: https://mikrotax.org/pforams/index.php?id=131293 Go to Archive.is to create a permanent copy of this page - citation notes |
This policy contains information about your privacy. By posting, you are declaring that you understand this policy:
This policy is subject to change at any time and without notice.
These terms and conditions contain rules about posting comments. By submitting a comment, you are declaring that you agree with these rules:
Failure to comply with these rules may result in being banned from submitting further comments.
These terms and conditions are subject to change at any time and without notice.
Comments