pforams@mikrotax - Planomalina sp.

pforams@mikrotax - Planomalina sp. pforams@mikrotax - Planomalina sp.

Planomalina sp.

Classification: pf_mesozoic -> Planomalinidae -> Planomalina -> Planomalina sp.
Sister taxa: P. buxtorfi, P. praebuxtorfi, P. pulchella, P. sp.

Taxonomy

taxonomic rank: generic level id

Entries in the Catalog of original descriptions:

Distinguishing features:
Parent taxon (Planomalina): Test planispiral, partly evolute, biumbilicate, about eight to ten chambers in the final whorl, sutures broadly curved, thickened, elevated and nodose, peripheral outline lobulate, peripheral angle carinate; wall calcareous, finely perforate, radial in structure, ornamented by the thickened and nodose sutures and peripheral keel; aperture a basal equatorial arch with bordering lip, the opening extending to either side, where part of previous apertures and the bordering lip may remain exposed as relict apertures as the new chambers are added.
This taxon: Specimens which cannot be assigned to established species

Geological Range:
Last occurrence (top): within (-Ma, top in "Holocene" stage). Data source:
First occurrence (base): within (-Ma, base in "Holocene" stage). Data source:

Plot of range and occurrence data:

Range-bar - range as quoted above, pink interval top occurs in, green interval base occurs in.
Triangles indicate an event for which a precise placement has been suggested
Histogram - Neptune occurrence data from DSDP and ODP proceedings. Pale shading <50 samples in time bin. Interpret with caution & read these notes
Taxon plotted: Planomalina sp., synonyms included - Planomalina sp.; Planomalina buxtorfi (q);
See also space-time plot :: Samples map :: Parent: Planomalina

References:

Planomalina sp. compiled by the pforams@mikrotax project team viewed: 15-10-2024

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