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Species Porticulasphaera semiinvoluta Keijzer 1945


Systematics:

1
 Superregnum Eukaryota
  Regnum Protoctista
   Phylum Ciliophora
    Subphylum Postciliodesmatophora
     Ordo Globigerinida
      Superfamilia Globigerinaceae
       Superfamilia Nonionacea
        Familia Globigerinidae
         Genus Porticulasphaera
          Species Porticulasphaera semiinvoluta
Was used in synonym list of:
Globigerinatheka semiinvoluta Keijzer 1945
Stratigraphy - absolute ages:
FAD: 38.4 ± 0 [Ma], Berggren et al. (1995)
References:

Berggren,W.A.; Kent,D.V.; Swisher,C.C. and Aubry,M.P. (1995):
A revised Cenozoic Geochronology and Chronostratigraphy.
In: Geochronology Time Scales and Global Stratigraphic Correlation, SEPM Special Publication Vol. 54
Anonymous: Unedited TaxonConcept data
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This work is licensed under a Creative Commons Attribution 2.5 License.
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