Classification: pf_mesozoic -> Chilostomellidae
Sister taxa: Guembelitriidae, Heterohelicidae, Planomalinidae, Globigerinelloididae, Schackoinidae, Conoglobigerinidae, Chilostomellidae, Favusellidae, Praehedbergellidae, Hedbergellidae, Rugoglobigerinidae, Rotaliporidae, Globotruncanidae, hidden,
Daughter taxa: (blue => in age window 0-800Ma) Granddaughter taxa


Citation: Chilostomellidae Brady 1881
Rank: Family

Original description: Test calcareous, finely perforate. With Reuss's genera Chilostomella and Allomorphina, which together form his family Cryptostegia, I have associated Seguenza's genus Ellipsoidina. The anomalous characters of the latter, viewed as a Nodosarian, I pointed out many years ago, and had I then known the genus Chilostomella by anything more than figures, I should have suggested the present position for it. The primary difference in the structure of these two types consists in the fact that in Chilostomella the segments alternate, the attachment to each other being at one side, and the aperture first at one end and then at the other, whilst in Ellipsoidina the attachment is at the base, the segments grow in the same direction, and consequently the aperture is always at the same end.

Entries in the Catalog of original descriptions: Chilostomellidae

Geological Range:
Last occurrence (top): within Albian Stage (100.50-112.95Ma, top in Albian stage). Data source: Total of range of species in this database
First occurrence (base): within Albian Stage (100.50-112.95Ma, base in Albian 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


Brady, H. B. (1881a). Notes on some reticularian Rhizopoda of the Challenger Expedition. Part III. Quarterly Journal of Microscopical Science. 21: 31-71. gs V O


Chilostomellidae compiled by the pforams@mikrotax project team viewed: 1-10-2020

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Short stable page link: http://mikrotax.org/pforams/index.php?id=110039 Go to Archive.is to create a permanent copy of this page - citation notes

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