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.
Current identification:
Original Description
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Extra details from original publication
Remarks: Juvenile forms are similar to Praeglobotruncana helvetica (Bolli) but are readily distinguished from the latter by the spiroconvexity and ovate chambers in final whorl, which lose the distinct keel on the spiral edge of the margin. Axial thin-sections show a wide poreless margin in the early chambers which becomes narrower with age. Margins of the final chamber may be entirely porous. The stratigraphic range is from Middle Turonian to Coniacian.
Also recorded from the Dry Creek area, California (Marianos and Zingula, 1966, in press)
Douglas, R. & Sliter, W. V. (1966). RegionaI distribution of some Cretaceous Rotaliporidae and Globotruncanidae ( Foraminiferida) within North America. Marianos, A. W. & Zingula, R. P. (1966). Cretaceous planktonic foraminifers from Dry Creek, Tehama County, California. Journal of Paleontology. 40: 328-343. gsReferences:

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Globotruncana cachensis compiled by the pforams@mikrotax project team viewed: 5-9-2026
Short stable page link: https://mikrotax.org/pforams/index.php?id=132816 Go to Archive.is to create a permanent copy of this page - citation notes |
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