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Subspecies Blefuscuiana infracretacea occidentalis Boudagher-Fadel et al. 1996


Discussion / Comments:
Boudagher-Fadel et al. (1997):
Remarks: B. infracretacea occidentalis has the same test shape, chamber shape and umbilical size as B. infracretacea (Glaessner) ss., but it has a porticus and a smooth test surface and lacks perforation cones. Some forms have weak development of perforation cones on the first chamber of the last whorl. They are transitional forms (Plate 8.7, Fig. 13) between the two subspecies.
Systematics:

22
 Superfamilia Globigerinaceae
  Familia Praehedbergellidae
   Subfamilia Praehedbergellinae
    Genus Blefuscuiana
     Subspecies Blefuscuiana infracretacea occidentalis
Synonym list:
Boudagher-Fadel et al. (1997):
1980 Hedbergella aptica Agalarova. - Gorbatchik : pl. 3; fig. 2, 3 (non Globigerina aptica Agalarova, 1951 = B. infractacea s.s.)
1986 Hedbergella aptica Agalarova. - Gorbatchik : p. 94, 234 pl. 14; fig. 2, 3 (not fig. 4, 5)
1988 Blefuscuiana aptica Agalarova. - Banner & Desai : p.160 pl. 5; fig. 4-7
1993 Blefuscuiana infracretacea aptica Agalarova. - Banner et al. : p.12 pl. 4; fig. 4, 5
1995 Hedbergella infracretacea Glaessner. - Weiss : pl. 1; fig. 4
1996 Blefuscuiana infracretacea occidentalis Boudagher-Fadel et al.. - Boudagher-Fadel et al. : p.249 fig. 1 (9-16)
1997 Blefuscuiana infracretacea occidentalis Boudagher-Fadel et al.. - Boudagher-Fadel et al. : p.149 pl. 8.7; fig. 9-15; Figure: 8.1-8.3
1997 Blefuscuiana infracretacea occidentalis Boudagher-Fadel et al.. - Boudagher-Fadel et al. : pl. 1; fig. 1-3
Was used in synonym list of:
Praehedbergella infracretacea Glaessner 1937
References:

Gorbatchik,T.N. (1980):
Planktonic foraminifera in Lower Cretaceous deposits of the eastern part of the Central Atlantic.
In: Stratigraphy and Palaeogeography of the Central Atlantic in the Cretaceous Period. p. 29-49 (in Russi

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

Banner,F.T. and Desai,D. (1988):
A review and revision of the Jurassic-Early Cretaceous Globigerinina, with special reference to the Aptian assemblages of Speeton (North Yorkshire, England) . J. micropalaeontol. Vol. 7(2) p. 143-185

Banner,F.T.; Copestake,P.. and White,M.R.. (1993):
Barremian-Aptian Praehedbergellidae of the North Sea area: a reconnaissance . Bulletin of The Natural History Museum, London (Geology) Vol. 49 p. 1-30

Weiss,W.. (1995):
Aptian planktonic foraminifers from the Wiechendorf 1/86 Borehole. . Geologisches Jahrbuch (series A) Vol. 141 p. 113-131

Boudagher-Fadel,M.K.; Banner,F.T.; Gorbatchik,T.K.; Simmons,M.D. and Whittaker,J.E. (1996):
Evolution in the Early Cretaceous planktonic foraminiferal genus Blefuscuiana . Jahrbuch für Geologie und Paläontologie, Abhandlungen Vol. 202 p. 243-258

Boudagher-Fadel,M.K.; Banner,F.T.; Gorbatchik,T.N.; Simmons,M.D. and Whittaker,J.E. (1997):
The evolution of Hedbergella from Praehedbergella . Journal of Micropalaeontology (in press)

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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