Biglobigerinella barri Bolli et al. 1957 from: Boudagher-Fadel, M.K.Banner, F.T.Whittaker, J.E.Simmons, M.D. (1997): Early Evolutionary History of Planktonic Foraminifera. Vol. 1 | . |
Notice: This catalogue page may contain unedited data.
|
Species Biglobigerinella barri Bolli et al. 1957 |
|
|
|
| Discussion / Comments: |
Boudagher-Fadel et al. (1997):
Remarks: This species has eight to ten globular
chambers in the last whorl; often, but not always,
with biserial final chambers. The wall is macroperforate
and the surfaces of the earliest chambers
of the last whorl are muricate.
Biglobigerinella with biserial final chambers
occurred randomly in the Late Cretaceous;
however, it is not cosmopolitan. The Late
Cretaceous species probably evolved from
planispiral, uniserial forms of Planohedbergella
gen.nov. (Appendix 1); their ancestry is unknown,
and they were probably unrelated to 'B'. barri
(which we believed to have evolved from Aptian
Alanlordella), hence the informal use of the genus
in this case. |
| Synonym list: |
Boudagher-Fadel et al. (1997):
1974 Globigerinelloides barri Bolli et al.. - Longoria : p. 80, 81 pl. 4, fig. 1-3, 8, 14;
pl. 5, fig. 9-16;
pl. 27, fig. 19
|
| Was used in synonym list of: |
|
|
| References: |
Bolli,H.M.; Loeblich,A.R. and Tappan,H. (1957):
The Planktonic foraminiferal families Hantkeninidae, Orbulinidae, Globorotaliidae, and Globotruncanidae . U.S. National Museum Bull. Vol. 215 p. 3-50
Longoria,J.F. (1974):
Stratigraphic, morphologic and taxonomic studies of Aptian planktonic Foraminifera . Revista Espanola de MicropaleontologíaNo extraord p. 1-107
Boudagher-Fadel,M.K.; Banner,F.T.; Whittaker,J.E. and Simmons,M.D. (1997):
Early Evolutionary History of Planktonic Foraminifera. Vol. 1
|
This work is licensed under a Creative Commons Attribution 2.5 License.
|
|
Taxon Concept provided by