Classification: pf_neogene -> Globigerinidae -> Catapsydrax
Sister taxa: Beella, Globigerina, Globigerinella, Protentella, Globigerinoides, Globigerinoidesella, Globoturborotalita, Orbulina, Praeorbulina, Sphaeroidinella, Sphaeroidinellopsis, Trilobatus, Turborotalita, Catapsydrax, Clavatorella, Paragloborotalia, Orcadia,

Distinguishing features: Small umbilical bulla with a few accessory apertures

Daughter taxa: (blue => in age window 0-300Ma)

Specimens which cannot be assigned to established species


Citation: Catapsydrax Bolli, Loeblich & Tappan, 1957
Rank: genus
Type species: Globigerina dissimilis
Taxonomic discussion:

The genus Catapsydrax was originally designated on the basis of the small umbilical bulla with few accessory apertures as against Globigerinita, which is characterized by extensive bullae with numerous accessory apertures. Blow (1969) considered these distinctions to be useful only at the species level and included Catapsydrax in the synonymy with Globigerinita. Many subsequent workers (Bronnimann and Resig, 1971; Jenkins and Orr, 1972; Poag, 1972; Bolli, 1972) appear to have followed this interpretation. However, differences in surface ultrastructure, stratigraphic distribution and species relations between Catapsydrax and Globigerinita suggest these two genera to be phylogenetically unrelated (Fleisher, 1974; Fleisher and Steineck, 1978). [Kennett & Srinivasan 1983]

Catalog entries: Catapsydrax;

Type images:

Distinguishing features: Small umbilical bulla with a few accessory apertures

NB The short diagnoses are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus. They have initially been copied from the diagnostic characters/distinguishing features sections of the Eocene and Paleocene Atlases, they will be edited as the site is developed.


Biogeography and Palaeobiology

Phylogenetic relations:

Catapsydrax appears to have evolved from Globorotaloides (probably Globorotaloides suteri) during the Middle Eocene (Jenkins, 1971;Fleisher, 1974). [Kennett & Srinivasan 1983]

Biostratigraphic distribution

Geological Range:
Notes: Catapsydrax is largely a Paleogene genus reaching maximum diversity during the Middle Oligocene. Although the genus persisted into the Early Neogene, it is unimportant after Zone N7 (Text Fig. 7). [Kennett & Srinivasan 1983]
Last occurrence (top): in lower part of Tortonian Stage (41% up, 9.8Ma, in Tortonian stage). Data source: Total of range of species in this database
First occurrence (base): in upper part of Burdigalian Stage (65% up, 17.5Ma, in Burdigalian stage). Data source: Total of range of species in this database

Plot of occurrence data:

Primary source for this page: Kennett & Srinivasan 1983, p.22


Bolli, H.M.; Loeblich, A.R., Jr. & Tappan, H., (1957). Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae. In: Loeblich, A.R., Jr. et al. (Editors), Studies in Foraminifera, U.S. National Museum Bulletin 215. U.S. Government Printing Office, Washington, DC, pp. 3-50.


Catapsydrax compiled by the pforams@mikrotax project team viewed: 16-8-2018

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