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Conoglobigerinidae


Classification: pf_mesozoic -> Conoglobigerinidae
Sister taxa: Guembelitriidae, Heterohelicidae, Planomalinidae, Globigerinelloididae, Schackoinidae, Conoglobigerinidae, Chilostomellidae, Favusellidae, Praehedbergellidae, Hedbergellidae, Rugoglobigerinidae, Rotaliporidae, Globotruncanidae, hidden,
Daughter taxa (blue => in age window 0-300Ma) Granddaughter taxa


Test subconical, high trochospiral coil of two to four whorls, three to six rapidly enlarging spherical chambers per whorl, umbilicus small and shallow, peripheral outline lobulate, periphery rounded; wall calcareous, hyaline, surface with rounded to elongate imperforate tubercles that may fuse into short costellae, wall perforate between tubercles; aperture an umbilical arch, with narrow bordering lip.

Test high to low trochospiral, with two to four whorls of rapidly enlarging globular chambers, umbilicus small, periphery rounded, peripheral outline lobulate, sutures radial, depressed; wall calcareous, hyaline, radial, finely perforate (about 30 pores per 100 μm2), surface with imperforate small tubercles and costellae that rarely have a few pores and may appear cancellate; aperture a high umbilical arch, bordered above by a narrow lip.



Taxonomy

Citation: Conoglobigerinidae Boudagher-Fadel 1997
Rank: Family

Type images:

Original description: :

Entries in the Catalog of original descriptions: Conoglobigerinidae [not in catalog yet]

Geological Range:
Last occurrence (top): within Valanginian Stage (133.88-139.39Ma, top in Valanginian stage). Data source: Total of range of species in this database
First occurrence (base): within Bajocian Stage (168.28-170.30Ma, base in Bajocian stage). Data source: Total of range of species in this database

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.

References:

Boudagher-Fadel 1997 [sorry, not in our bibliography yet]


Conoglobigerinidae compiled by the pforams@mikrotax project team viewed: 23-5-2017

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