Praehedbergella tuschepsensis Antonova 1964 (TaxonConcept

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Species Praehedbergella tuschepsensis Antonova 1964

Diagnosis / Definition:

Boudagher-Fadel et al. (1997):
Emended diagnosis: Test microperforate and smooth (no muricae or pustules of any sort: perforation cones occur only in one subspecies). Four and a half chambers are visible dorsally in the last whorl, but only four abut the ventral umbilicus. The chambers of the last two whorls enlarge rapidly (b/a = 1.6 approx.) and the chambers of the last whorl are subglobular, being only very slightly depressed (h/L = 0.71 approx.) and highest in their mid-points (L' = L"). The dorsal surface is virtually flat. The intra-extraumbilical aperture is a low slit, extending to the periphery of the penultimate whorl, and possessing a thin, narrow, lip-like porticus. The umbilicus is quite broad and deep (u/uh = 0.24).

Discussion / Comments:

Boudagher-Fadel et al. (1997):
Remarks: P. tuschepsensis s.s. differs from its subspecies P. tuschepsensis perforare Banner et al. in lacking perforation cones and from the subspecies P. tuschepsensis grigelisi Banner and Desai in its flat dorsal surface and broader umbilicus. As noted in the Introduction to this chapter, the specimens given this species name by Gorbachik (1986) and by Banner et al. (1993) were based erroneously on the dorsal morphology of a paratype in the collection of the Moscow State University; that specimen is now known to belong to a species (and genus) different from the holotype of P. tuschepsensis s.s.

Systematics:

22
Superfamilia Globigerinaceae
  Familia Praehedbergellidae
   Subfamilia Praehedbergellinae
    Genus Praehedbergella
     Species Praehedbergella tuschepsensis

Synonym list:

Moullade et al. (2002):

1964 Globigerina tuschepsensis Antonova. - Antonova et al. : 59,60 pl 12 fig 3a-c

non 1971 Clavihedbergella tuschepsensis Antonova. - Gorbatchik : pl 10, fig 9a-c

1986 Clavihedbergella tuschepsensis Antonova. - Gorbatchik : pl 25 fig 1

1988 Praehedbergella grigelisae Banner & Desai. - Banner & Desai : p.154 pl 2 figs 11-13

1997 Praehedbergella tuschepsensis sensu stricto Antonova. - Boudagher-Fadel et al. : 105,106 pl 7.1, figs 1-7

1997 Praehedbergella tuschepsensis grigelisi Banner & Desai. - Boudagher-Fadel et al. : p.106 pl 7.1 figs 12-14

1998 Praehedbergella tuschepsensis Antonova. - Moullade et al. : pl 3 fig 4

Boudagher-Fadel et al. (1997):

1964 Globigerina tuschepsensis Antonova. - Antonova et al. : 59, 60 pl. 12; fig. 3a-c

non 1986 Clavihedbergella tuschepsensis Antonova. - Gorbatchik : 118, 119, 236 pl. 25; fig. 1

non 1993 Praehedbergella tuschepsensis Antonova. - Banner et al. : 8, 9 pl. 2; fig. 4a-c

1997 Praehedbergella nomen emend. tuschepsensis sensu stricto Antonova. - Boudagher-Fadel et al. : p.113 pl. 7.1; fig. 1; Figure: 7.1

Was used in synonym list of:

Praehedbergella yakovlevae

References:

Antonova,Z.A.; Schmygina,T.A.; Gnedina,A.G. and Kalugina,O.M. (1964):
Neocomian and Aptian Foraminifera from the Pshekha-Ubin interfluve (northwestern Caucasus) [in Russian].
In: Stratigraphy and lithology of the Mesozoic and Cainozoic deposits of the Krasnodarsk area, Trudy Krasnodarskii Filial Vsesoyuznogo Neftegazonogo Nauchno-Isledovatelskogo Instituta Vol. 12 Eds: Egoian, V.L. p. 3-72

Gorbatchik,T.N. (1971):
On Early Cretaceous foraminifera of the Crimea [in Russian] . Voprosy Mikropaleontologii Vol. 14 p. 125-139

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

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.; Whittaker,J.E. and Simmons,M.D. (1997):
Early Evolutionary History of Planktonic Foraminifera. Vol. 1

Moullade,M.; Tronchetti,G.; Kuhnt,W. and Masse,J.P. (1998):
Les Foraminifères benthiques et planctoniques de la série du Stratotype Historique de l’Aptien inférieur dans la région de Cassis-La Bédoule (SE France) . Géologie Méditerranéenne Vol. 25 p. 187-225

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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