Catapsydrax

NB TAXA WHICH ORIGINATE IN THE OLIGOCENE ARE NOT INCLUDED YET
Classification: pf_neogene -> Globigerinidae -> Catapsydrax
Sister taxa: Beella, Catapsydrax, Clavatorella, Globigerina, Globigerinella, Globigerinoides, Globigerinoidesella, Globoturborotalita, Orbulina, Orcadia, Paragloborotalia, Praeorbulina, Protentella, Sphaeroidinella, Sphaeroidinellopsis, Trilobatus, Turborotalita,
Daughter taxa (blue => in age window 0-300Ma)

Specimens which cannot be assigned to established species

Taxonomy

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:

Description

Biogeography and Palaeobiology


Phylogenetic relations:

Catapsydrax appears to have evolved from Globorotaloides (probably Globorotaloides suterl) 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): within Tortonian Stage (7.25-11.62Ma, top in Tortonian stage). Data source: Total of range of species in this database
First occurrence (base): within Burdigalian Stage (15.97-20.44Ma, base in Burdigalian stage). Data source: Total of range of species in this database

Plot of occurrence data:

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

References:

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.


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Catapsydrax compiled by the pforams@mikrotax project team viewed: 25-9-2017

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AphiaID: 721443 Nomenclatural data on WoRMS
Go to Archive.is to create a permanent copy of this page - citation notes



AphiaID: 721443 Nomenclatural data on WoRMS
Go to Archive.is to create a permanent copy of this page - citation notes

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