Microhedbergella

Daughter taxa (time control age-window is: 0-800Ma)
			Microhedbergella albiana
			Microhedbergella intermedia
			Microhedbergella miniglobularis
			Microhedbergella praeplanispira
			Microhedbergella pseudodelrioensis
			Microhedbergella pseudoplanispira
			Microhedbergella pseudotrocoidea
			Microhedbergella renilaevis
			Microhedbergella rischi
			Microhedbergella sp. Specimens which cannot be assigned to established species

Taxonomy

Original description:

Test wall thin, microperforate, wall pores evenly distributed and variably spaced in adult chambers, surface smooth or with scattered and weakly developed pustules. Test small to moderate in size, coiled in a very low to low trochospire, spiral side evolute, umbilical side mostly involute; chambers globular, never elongated radially, increasing rapidly to moderately in size, with 3–6 in the final whorl; aperture a low interiomarginal, umbilical-extraumbilical arch bordered by a thin lip or flap that may extend partly into umbilical region.

Entries in the Catalog of original descriptions: Microhedbergella

Distinguishing features:
Parent taxon (Hedbergellidae): Test trochospirally coiled, primary aperture interiomarginal, extraumbilical-umbilical, with prominent apertural lip, apertures of earlier chambers remain visible around the umbilical region; no sutural secondary apertures.
This taxon: Test wall thin, microperforate, surface smooth or with scattered and weakly developed pustules. Test low trochopiral, small, chambers globular, increasing rapidly to moderately in size, with 3–6 in the final whorl; aperture a low interiomarginal, umbilical-extraumbilical arch bordered by a thin lip or flap.

Geological Range:
Last occurrence (top): at top of P. appenninica zone (100% up, 100.5Ma, in Albian stage). Data source: Total of ranges of the species in this database
First occurrence (base): within P. rohri zone (113.22-116.60Ma, base in Aptian stage). Data source: Total of ranges of species in this database

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
• Neptune data: This is a higher taxon page so Neptune data is not plotted. See also: customisable plot Parent: Hedbergellidae

Microhedbergella compiled by the pforams@mikrotax project team viewed: 14-10-2024 Taxon Search: Advanced Search Short stable page link: https://mikrotax.org/pforams/index.php?id=110346 Go to Archive.is to create a permanent copy of this page - citation notes

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