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Praehedbergella praetrocoidea Kretchmar & Gorbatchik 1986 from: Moullade, M.Bellier, J.P.Tronchetti, G. (2002): Hierarchy of criteria, evolutionary processes and taxonomic simplification in the classification of Lower Cretaceous planktonic foraminifera . Cretaceous Research Vol. 23 p. 111-148
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Species Praehedbergella praetrocoidea Kretchmar & Gorbatchik 1986


Discussion / Comments:
Moullade et al. (2002):
By acquiring a macroperforate wall and a slightly increased number of chambers (7–8 instead of 6–7), this species would be, according to Boudagher-Fadel et al. (1998), at the origin of Hedbergella trocoidea.
Synonym list:
Moullade et al. (2002):
1986 Hedbergella praetrocoidea Kretchmar & Gorbatchik. - Gorbatchik : p.95 pl 16, figs 3-5
1997 Blefuscuiana praetrocoidea Kretchmar & Gorbatchik. - Boudagher-Fadel et al. : 130,131 pl 8.9, figs 4-12
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. and Whittaker,J.E. (1997):
The early evolutionary history of planktonic foraminifera. p. 296

Boudagher-Fadel,M.K.; Banner,F.T.; Gorbatchik,T.N.; Simmons,M.D. and Whittaker,J.E. (1998):
On the evolution of the Hedbergellidae from the Praehedbergellidae . Journal of Micropaleontology Vol. 17 p. 97-103

Moullade,M.; Bellier,J.P. and Tronchetti,G. (2002):
Hierarchy of criteria, evolutionary processes and taxonomic simplification in the classification of Lower Cretaceous planktonic foraminifera . Cretaceous Research Vol. 23 p. 111-148
Anonymous: Unedited TaxonConcept data
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