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Species Blefuscuiana sp.


Discussion / Comments:
Boudagher-Fadel et al. (1997):
Remarks: When Antonova (1964) erected Globigerina tuschepsensis, she published only drawings of her new species. Later, Gorbachik (1986) used scanning electron micrographs to illustrate a topotypic paratype with clearly asymmetric chambers. However, she only illustrated a part of its dorsal side. We have now been able to examine this paratype and photograph it by SEM (Plate 8.12, Figs 7-9) to prove that it has indeed more than four chambers abutting the umbilicus and it belongs to the genus Blefuscuiana, while the holotype of tuschepsensis (also figured here by SEM for the first time on Plate 7.1, Figs 4-7) has only four chambers abutting the umbilicus, and is a Praehedbergella. Blefuscuiana sp. is the only known species of Blejiiscuiana which possesses asymmetrical chambers, which become highest posteriorly (h/L = 0.7 approx., but L1/L2 = 1.5 approx.). It is known only from a single specimen which was included amongst the two paratypes of Praehedbergella tuschepsensis by Antonova (1964) in the collections of Moscow State University.
Systematics:

22
 Superfamilia Globigerinaceae
  Familia Praehedbergellidae
   Subfamilia Praehedbergellinae
    Genus Blefuscuiana
     Species Blefuscuiana sp.
Synonym list:
Boudagher-Fadel et al. (1997):
1986 Clavihedbergella tuschepsensis Antonova. - Gorbatchik : p. 118, 119, 236 pl. 25; fig. 1
1997 Blefuscuiana sp. . - Boudagher-Fadel et al. : p.159 pl. 8.12; fig. 7-9; Figure: 8.1
References:

Gorbatchik,T.N. (1986):
Jurassic and Early Cretaceous planktonic foraminifera of the south of the USSR [in Russian]. p. 239

Boudagher-Fadel,M.K.; Banner,F.T.; Whittaker,J.E. and Simmons,M.D. (1997):
Early Evolutionary History of Planktonic Foraminifera. Vol. 1
Anonymous: Unedited TaxonConcept data
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