Catalog - Catapsydrax parvulus Catalog - Catapsydrax parvulus

CATALOG OF ORIGINAL DESCRIPTIONS: Catapsydrax parvulus Bolli, Loeblich & Tappan 1957

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 -> C -> Catapsydrax -> Catapsydrax parvulus
Other pages this level: C. apenninicus, C. echinatus, C. golicynensis, C. gortanii, C. indianus, C. parvulus, C. prahovensis, C. stainforthi, C. unicavus, C. venzoi

Catapsydrax parvulus

Citation: Catapsydrax parvulus Bolli, Loeblich & Tappan 1957
Taxonomic rank: species
Type specimens: Holotype:(USNM P4219) Paratypes:unfigured USNM P4822)
Type sample (& lithostrat): Lengua Formation
Type age (chronostrat): Miocene
Type locality: Holotype (USNM P4219)and unfigured paratypes (USNM P4822) from the Miocene Lengua formation (Globorotalia mayeri zone), in a ditch on the north side of Cunjal Road, southern Trinidad, B. W. I.
Type repository: Washington; USNM

Linked specimens: USNM-4822 USNM-4219

Current identification/main database link: Globorotaloides parvulus Bolli, Loeblich & Tappan, 1957


Original Description

Test free, tiny, subglobular, low trochospiral, periphery broadly rounded; chambers ovate, increasing rapidly in size as added, four to five per whorl, mostly with four in the final whorl; sutures distinct, slightly depressed, oblique,somewhat curved on the spiral side; wall calcareous, finely perforate, surface smooth; primary aperture interiomarginal, umbilical and covered over by an arched blisterlike bulla, with a single very low arched or slit like infralaminal accessory aperture opening at one side.

Size:
Greatest diameter of holotype 0.16 mm., thickness 0.13 mm. Paratypes range from 0.13 to 0.18 mm. in diameter.

Extra details from original publication
Remarks: This species differs from Catapsydrax dissimilis (Cushman and Bermudez) in its much smaller size, being about one-fourth the diameter; in the less globular and less inflated chambers and more even periphery; and in having only a single infralaminal accessory aperture rather than two to four.

Editors' Notes
This species was discussed at length by Coxall & Spezzaferri 2018, who conculded that it was uncertain wjat the holtype ws of and that it might even be a benthic species. Most specimens originally included in C. parvulus are now placed in C. unicavus. [editor's comment - JRY 2019]

References:

Bolli, H. M., Loeblich, A. R. & Tappan, H. (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. In, Loeblich, A. R. , Jr., Tappan, H., Beckmann, J. P., Bolli, H. M., Montanaro Gallitelli, E. & Troelsen, J. C. (eds) Studies in Foraminifera. U.S. National Museum Bulletin . 215: 3-50. gs

Coxall, H. K. & Spezzaferri, S. (2018). Taxonomy, biostratigraphy, and phylogeny of Oligocene Catapsydrax, Globorotaloides, and Protentelloides. In, Wade, B. S., Olsson, R. K., Pearson, P. N., Huber, B. T. & Berggren, W. A. (eds) Atlas of Oligocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 46(Chap 4): 79-124. gs


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Catapsydrax parvulus compiled by the pforams@mikrotax project team viewed: 13-11-2025

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