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Favusella hoterivica


Classification: pf_mesozoic -> Favusellidae -> Favusella -> Favusella hoterivica
Sister taxa: F. hoterivica, F. washitensis,

Taxonomy

Citation: Favusella hoterivica (Subbotina, 1953)
Rank: Species
Basionym: Globigerina hoterivica
Similar species: -Differs from Favusella washitensis in having a less regular and denser reticulate network. [copied from Chronos database]

Type images:

Original description: Globigerina hoterivica Subbotina 1953: Test small, strongly convex, turret-shaped, consisting of 3 whorls; there are 4-5 highly inflated rounded chambers in the final whorl; these chambers are closely adjacent to one another so that the whole test looks like a disorganized accumulation of spherical chambers. The chambers grow very uniform in size. The sutures are short, slightly curved, almost straight. The umbilical aperture is a large slit in the extraumbilical area. The aperture has a small raised lip. Wall smooth, finely porous. Average dimensions: Diameter 0.15 mm; greatest thickness 0.10 mm.

Entries in the Catalog of original descriptions: Globigerina hoterivica;

Geological Range:
Last occurrence (top): within L. cabri zone (123.89-125.71Ma, top in Aptian stage). Data source: [copied from Chronos database]
First occurrence (base): at base of G. hoterivica zone (0% up, 141.9Ma, in Berriasian stage). Data source: zonal marker (from Timescale Creator)

Plot of occurrence data:

NB Plotting of Neptune data has been disabled on the Mesozoic pages because the dataset is both small and badly affected by a few sites with erroneous age models (our obs Huber, Petrizzo, Young, Nov 2016). The data can still be viewed via the range plottertool - tools menu.

Character matrix

test outline:Lobatecoiling axis:Moderatechamber arrangement:Trochospiralumbilicus:Narrow
edge view:Umbilico-convexumbilical or test sutures:Moderately depressedspiral sutures:Moderately depressedshell porosity:Finely Perforate: 1-2.5
wall texture:Irreg. favolateaperture:Umbilicalaperture border:Thick lipaccessory apertures:N/A
periphery:N/Aumb chamber shape:Inflatedsp chbr shape:Inflatedperiph margin shape:Broadly rounded
umb depth:Deepdiameter mm:0.11width mm:breadth mm:0,06
final-whorl chambers:4.0-4.5

References:

Subbotina, N., (1953). Foraminiferes fossiles d'URSS Globigerinidae, Globorotaliidae, Hantkeninidae. Bureau de Recherches Geologiques et Minieres, 2239: 1-144.


Favusella hoterivica compiled by the pforams@mikrotax project team viewed: 29-5-2017

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