Taxon Concept provided by
  Home |   Search

Click on a letter below to get a list of species:
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z all
Globorotalia crassaformis ronda Blow 1969 from: Bolli, H.M.Saunders, J.B. (1985): Oligocene to Holocene low latitude planktic foraminifers. In: Plankton Stratigraphy Eds: Bolli, H.M.Saunders, J.B. p. 155-262
.
Anonymous: Unedited TaxonConcept data
Notice: This catalogue page may contain unedited data.

Subspecies Globorotalia crassaformis ronda Blow 1969



Alternative name:
Discussion / Comments:
Bolli & Saunders (1985):
Both subspecies have a virtually identical test morphology with rounded peripheral margin and high, inflated umbilical side. According to Blow the most distinct character by which rondo differs from oceanica is the thickened test wall formed by densely packed sclerites. Both subspecies differ from the crassaformis subspecies in the distinctly rounded peripheral margin and the more inflated umbilical portion of the test and also by more closely appressed chambers as a result of tighter coiling. Because of its consistently smaller size, Lidz (1972) regarded ronda as an early ontogenetic stage found throughout the crassaformis lineage but maintained it as an ecological morphotype predominant at lower temperatures.
Synonym list:
Bolli & Saunders (1985):
1969 Globorotalia (Turborotalia) crassaformis ronda Blow. - Blow : p.388 pl.4, figs.4-6
1985 Globorotalia crassaformis ronda Blow. - Bolli & Saunders : p.237 figs. 37.10; 6,10,11
References:

Blow,W.H. (1969):
Late middle Eocene to Recent planktonic foraminiferal biostratigraphy.
In: Proceedings of the First International Conference on Planktonic Microfossils, Geneva 1967 Vol. 1 Eds: Bronnimann, P.Renz, H.H. p. 199-422

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

Creative Commons Attribution 2.5 License
This work is licensed under a Creative Commons Attribution 2.5 License.