Taxonomy
Entries in the Catalog of original descriptions:
Distinguishing features:
Parent taxon (Praeglobotruncana): Test trochospiral, biconvex to spiroconvex, umbilicate, periphery subangular with prominent nonporous carinal band that may have numerous pustules in the earlier part of the last whorl but is less distinct on the final chamber, sutures curved on the spiral side, radial on the umbilical side, flush to slightly depressed; wall calcareous, finely and densely perforate, radial in structure, surface smooth to pustulose or nodose, most rugose on the early chambers and keel; aperture an interiomarginal, extraumbilical-umbilical arch that extends to the periphery, bordered by an imperforate lip or flap.
This taxon: Specimens which cannot be assigned to established species
Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage).
First occurrence (base): within (-Ma, base in "Holocene" stage).
Plot of range and occurrence data:
Falzoni, F., Petrizzo, M. R., Jenkyns, H. C., Gale, A. S. & Tsikos, H. (2016). Planktonic foraminiferal biostratigraphy and assemblage composition across the Cenomanian–Turonian boundary interval at Clot Chevalier (Vocontian Basin, SE France). Cretaceous Research. 59: 69-97. gsReferences:
Praeglobotruncana sp. compiled by the pforams@mikrotax project team viewed: 20-9-2024
Short stable page link: https://mikrotax.org/pforams/index.php?id=110437 Go to Archive.is to create a permanent copy of this page - citation notes |
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