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Favusella


Classification: pf_mesozoic -> Favusellidae -> Favusella
Sister taxa: Favusella,
Daughter taxa: (blue => in age window 0-300Ma)


Specimens which cannot be assigned to established species

Taxonomy

Citation: Favusella Michael 1973
Rank: Genus
Basionym: Globigerina washitensis
Type species: Globigerina washitensis, Carsey, 1926
Taxonomic discussion: The status of Reticuloglobigerina is discussed by Loeblich and Tappan (1984, *1918, p. 38)

Type images:

Original description: Favusella: Test calcareous, microgranular hyaline, finely perforate with spherical to ovate chambers arranged in a low to moderately trochospiral coil; periphery rounded, lacking keel or imperforate periph­ cral band. Sutures depressed, radial, straight to slightly curved; umbilicus narrow to exceedingly wide. Primary aperture interiomarginal, umbilical to spiroumbilical with all possible intermediate positions; bordered above by a narrow lip in well preserved specimens. Test coarsely reticulated into regular polygonal areas by ridges forming a honey-comb pattern; each polygonal area with twenty or more minute pores.

Entries in the Catalog of original descriptions: Favusella;

Distinguishing features: Test trochospirally coiled, globular chambers rapidly enlarging, four to five in each of the two to three whorls, sutures radial, depressed, umbilicus narrow to wide, periphery broadly rounded, peripheral outline lobulate; wall calcareous, hyaline, optically radial, perforate, without keel or poreless carinal band, surface with a distinct honeycomblike pattern of costellae, few to many tiny pores in each of the rectangular to hexagonal areas, and rare pores on the elevated reticulum; aperture an interiomarginai arch of varied extent, ranging from umbilical to spiroumbilical and bordered by a narrow lip.

Geological Range:
Last occurrence (top): within Cenomanian Stage (93.90-100.50Ma, top in Cenomanian stage). Data source: Total of range of species in this database
First occurrence (base): within Berriasian Stage (139.39-145.01Ma, base in Berriasian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Dec 2017 - Plotting of Neptune data has been re-enabled on the Mesozoic pages following revision of the age-models in Neptune. The data is, however, still very sparse for the Early Cretaceous

References:

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


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Favusella compiled by the pforams@mikrotax project team viewed: 20-9-2018

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110106Go to Archive.is to create a permanent copy of this page - citation notes



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