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Subspecies Praeorbulina glomerosa glomerosa Blow 1956


Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test ovoid to nearly spherical, chambers spherical, last chambers increasing rapidly in size; final chamber much inflated and enveloping the earlier part of the test up to more than 40 percent; sutures curved depressed; surface distinctly cancellate; primary aperture of the early portion covered by the last embracing chamber; several small crescentic and slitlike openings along the basal suture.
Discussion / Comments:
Kennett & Srinivasan (1983):
Pr. glomerosa glomerosa differs from Pr. glomerosa curva in having a more enveloping final chamber and more numerous supplementary sutural apertures. It is an intermediate from between Pr. glomerosa curva and Pr. glomerosa circularis.
Bolli & Saunders (1985):
P. glomerosa glomerosa differs from P. glomerosa curva in having more apertures around the base of the last chamber and in possessing a test that is almost spherical in outline due to the high degree of envelopment by the last chamber.
Systematics:

1
 Superregnum Eukaryota
  Regnum Protoctista
   Phylum Ciliophora
    Subphylum Postciliodesmatophora
     Ordo Globigerinida
      Superfamilia Globigerinaceae
       Superfamilia Nonionacea
        Familia Globigerinidae
         Genus Praeorbulina
          Species Praeorbulina glomerosa
           Subspecies Praeorbulina glomerosa glomerosa
Synonym list:
Kennett & Srinivasan (1983):
1956 Praeorbulina glomerosa glomerosa Blow. - Blow : p.64 Text fig 1, no 15-19; Text fig 2 no 1-2
Bolli & Saunders (1985):
1956 Globigerinoides glomerosa glomerosa Blow. - Blow : p.65 text-figs. 1.18-19
1985 Praeorbulina glomerosa glomerosa Blow. - Bolli & Saunders : p.200 figs. 23.4, 24.5; 7,9,12
Vincent & Toumarkine (1990):
1956 Globigerinoides glomerosa glomerosa Blow. - Blow : p.64 fig. 1, nos. 15-19, fig. 2, nos. 1-2
1990 Praeorbulina glomerosa glomerosa Blow. - Vincent & Toumarkine : p.832 pl. 3, figs. 1-2
References:

Blow,W.H. (1956):
Origin and evolution of the foraminiferal genus Orbulina d'Orbigny . Micropaleontology Vol. 2(1) p. 57-70

Kennett,J. and Srinivasan,M.S. (1983):
Neogene Planktonic Foraminifera - A Phylogenetic Atlas.

Bolli,H.M. and Saunders,J.B. (1985):
Oligocene to Holocene low latitude planktic foraminifers.
In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262

Vincent,E. and Toumarkine,M. (1990):
Neogene planktonic foraminifers from the Western Tropical Indian Ocean, Leg 115.
In: Proceedings of the Ocean Drilling Program, Scientific Results Vol. 115 Eds: Duncan, R.A..Backman, J.Peterson, L.C. p. 795-836
Anonymous: Unedited TaxonConcept data
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