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Species Biglobigerinella barri Bolli et al. 1957 | ||||||
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| Discussion / Comments: | ||||||
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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. |
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| Systematics: | ||||||
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22 Superfamilia Globigerinaceae Familia Planomalinidae Genus Biglobigerinella Species Biglobigerinella barri |
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| Synonym list: | ||||||
| Boudagher-Fadel et al. (1997): 1957 Biglobigerinella barri Bolli et al.. - Bolli et al. : p.25 pl. 1; fig. 13-18b
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
1997 "Biglobigerinella" barri Bolli et al.. - Boudagher-Fadel et al. : p.219 pl. 12.2; fig. 4-9; Figure: 12.1
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| Was used in synonym list of: | ||||||
| References: | ||||||
Bolli,H.M.; Loeblich,A.R. and Tappan,H. (1957): Longoria,J.F. (1974): Boudagher-Fadel,M.K.; Banner,F.T.; Whittaker,J.E. and Simmons,M.D. (1997): |
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| Anonymous: Unedited TaxonConcept data | ||||||
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Taxon relations
Ranking (experimental) |
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