Catalog - Inordinatosphaera Catalog - Inordinatosphaera

CATALOG OF ORIGINAL DESCRIPTIONS: Inordinatosphaera Mohan & Soodan 1967

This page provides data from the catalog of type descriptions. The catalog is sorted alphabetically. Use the current identification link to go back to the main database.

Higher levels: pf_cat -> I -> Inordinatosphaera
Other pages this level: Igorina, Inordinatosphaera, Iuliusina

Inordinatosphaera indica Mohan & Soodan 1967


Citation: Inordinatosphaera Mohan & Soodan 1967
taxonomic rank: Genus
Type species: Inordinatosphaera indica Mohan and Soodan, 1967

Current identification:

Original Description

Test free, subglobular, early portion trochospiral, later with the chambers largely enveloping their preceding chambers; two to three chambers usually in a plane; wall calcareous, perforate, radial in structure; surface pitted; aperture in early stage interiomarginal, umbilical, later developing multiple sutural supplementary apertures, usually covered with meandriform bullae with infralaminal accessory apertures. Family Globigerinidae; subfamily Catapsydracinae. Middle Eocene. Monotypic.

Extra details from original publication
Remarks. - The new genus has superficial resemblance with the genus Globigerinatella Cushman and Stainforth 1945, reported to be restricted to Miocene, but differs from it in having different arrangement of bullae, and lacks the areaI apertures present in Globigerinatella. The wall structure is distinctly radial in Inordinatosphaera (see Inordinatosphaera indica Mohan and Soodan, 1967, fig. 7). The exact wall structure of Globigerinatella is not illustrated but has been commented as distinctly radial by Bolli, Loeblich and Tappan (1957, U. S. Nat. Mus., Bull., no. 215, pp. 38, 39).

The genus Inordinatosphaera iffers from Orbulina d'Orbigny, 1839, in not having areal apertures and having profuse development of bullae with infralaminal accessory apertures. The young globigerine stage is usually subcentral in Inordinatosphaera.

Editors' Notes
Problematica - see I. indica [Huber et al. 2006, p. 507]


Huber, B. T., Olsson, R. K. & Pearson, P. N. (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene microperforate planktonic foraminifera (Jenkinsina, Cassigerinelloita, Chiloguembelina, Streptochilus, Zeauvigerina, Tenuitella, and Cassigerinella) and Problematica (Dipsidripella). In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 41(Chap 16): 461-508. gs O

Mohan, M. & Soodan, K. S. (1967). Inordinatosphaera – a new genus of Globigerinidae. Bulletin of the Geological Society of India. 4(1): 22-24. gs


Inordinatosphaera compiled by the pforams@mikrotax project team viewed: 27-2-2024

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