Taxon Concept provided by
  Home |   Search
 
   TaxonConcept data set details:
 
 
Back to Search
.
Anonymous: Unedited TaxonConcept data
Notice: This catalogue page may contain unedited data.
To find validated information on this taxon please visit the following project pages:

Species Globigerina (Globigerina) angustiumbilicata Bolli 1957


Alternative name:
Globigerina angustiumbilicata Bolli 1957
Diagnosis / Definition:
Kennett & Srinivasan (1983):
Test very low trochospiral, four to five slowly increasing, subglobular chambers in the final whorl. Sutures on both sides radial and depressed; surface smooth to very finely rugose; umbilical region small; aperture very low arch with a thin lip.
Discussion / Comments:
Kennett & Srinivasan (1983):
Gg. (Gg.) angustiumbilicata is morphologically close to Gg. (Gg.) ciperoensis and Gg. (Gg.) angulisuturalis and appears to be ancestral to these two species. It differs from Gg. (Gg.) angulisuturalis in lacking the deep-cut, U-shaped sutures and from Gg. (Gg.) ciperoensis by having a small, confined umbilicus and a distinct apertural lip. Gg. (Gg.) angustiumbilicata appears to have evolved from Gg. (Gg.) officinalis during the Late Eocene (Blow and Banner, 1962).
Synonym list:
Kennett & Srinivasan (1983):
1957 Globigerina ciperoensis angustiumbilicata Bolli. - Bolli : p.109 pl 22 figs 12a-13c
References:

Bolli,H.M. (1957):
Planktonic foraminifera from the Oligocene-Miocene Cipero and Lengua formations of Trinidad, B.W.I..
In: Studies in Foraminifery, Bulletin of the U.S. National Museum Vol. 215 Eds: Loeblich, A.R.Tappan, H.Beckmann, J.P.Bolli, H.M.Gallitelli, E.M.Troelsen, J.C. p. 97-123

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

Anonymous: Unedited TaxonConcept data
Creative Commons Attribution 2.5 License
This work is licensed under a Creative Commons Attribution 2.5 License.
Back to Search
Taxon relations
pdf
Ranking (experimental)