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Plummerita


Classification: pf_mesozoic -> Rugoglobigerinidae -> Plummerita
Sister taxa: Archaeoglobigerina, Bucherina, Kuglerina, Plummerita, Rugoglobigerina, Rugotruncana, Trinitella
Daughter taxa: (blue => in age window 0-800Ma)
Plummerita hantkeninoides

Plummerita kennerleyi

Plummerita reicheli

Plummerita sp.
Specimens which cannot be assigned to established species

Taxonomy

Citation: Plummerita Brönnimann 1952
Rank: Genus
Basionym: Rugoglobigerina (Plummerella) hantkeninoides subsp. hantkeninoides
Type species: Rugoglobigerina (Plummerella) hantkeninoides subsp. hantkeninoides Brönnimann, 1952

Original description: Test small, Hantkenina-like, almost planispiral to distinctly trochoidal, generally only last whorl visible. Chambers increasing in size as added, compressed in early portion of last volution, slightly to much inflated in the adult. Spines in axial position of the chambers, present throughout the last vi^horl or restricted to early chambers. Sutures straight, shallow, but clearly marked. Umbilicus developed in trochoidal species, probably with covering plate. Aperture unknown, in analogy to the related forms probably rounded and large, leading into the umbilicus. Wall thick and surface ornamented by minute spines and ridges, either irregularly distributed or arranged in rows radiating from a central point on the surface toward the apertural face (meridional pattern).

Entries in the Catalog of original descriptions: Rugoglobigerina (Plummerella), Plummerita

Distinguishing features: Test with inflated triangular chambers in a low to flat trochospire, those of the final whorl radially elongate and ending in a tubulospine, sutures radial, depressed, umbilicus small, periphery rounded to compressed between tubulospines, peripheral outline strongly lobate and stellate; wall calcareous, perforate, surface with rugosities and costellae in meridional alignment; primary aperture interiomarginal, umbilical, provided with tegilla, and having both proximal and distal accessory apertures.

Geological Range:
Last occurrence (top): within Maastrichtian Stage (66.04-72.05Ma, top in Maastrichtian stage). Data source: Total of range of species in this database
First occurrence (base): within Maastrichtian Stage (66.04-72.05Ma, base in Maastrichtian stage). Data source: Total of range of species in this database

Plot of range and occurrence data:

References:

Brönnimann, P. (1952b). Plummerita new name for Plummerella Bronnimann, 1952. Contributions from the Cushman Foundation for Foraminiferal Research. 3(3): 146-146. gs V O

Brönnimann, P. (1952c). Globigerinidae from the Upper Cretaceous (Cenomanian-Maestrichtian) of Trinidad, B. W. I. Bulletins of American Paleontology. 34(140): 1-70. gs

Loeblich, A. R. & Tappan, H. (1988). Foraminiferal Genera and Their Classification (Volume I-II). Van Nostrand Reinhold Co., New York. 1-1059. gs


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Plummerita compiled by the pforams@mikrotax project team viewed: 25-10-2020

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