Praehedbergella ruka contritus Banner et al. 1993 (TaxonConcept

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Subspecies Praehedbergella ruka contritus Banner et al. 1993

Discussion / Comments:

Boudagher-Fadel et al. (1997):
Remarks: P. ruka contritus is distinguished by its strong dorsal convexity, depressed chambers (h/L = 0.8 approx.) in the last whorl, and a smooth test surface lacking perforation cones. Caron (1978) misidentified her material as H. infracretacea gargasiana, a form which has five and a half undepressed chambers in the final whorl and the muricate test of Hedbergella; it is clearly conspecific with P. ruka contritus. A similar form has been figured by Crittenden (1982) as ?H. hoterivica, but that species belongs to the genus Favusella (see also Banner and Desai, 1988).

Systematics:

22
Superfamilia Globigerinaceae
  Familia Praehedbergellidae
   Subfamilia Praehedbergellinae
    Genus Praehedbergella
     Species Praehedbergella ruka
      Subspecies Praehedbergella ruka contritus

Synonym list:

Boudagher-Fadel et al. (1997):

1978 Hedbergella infracretacea gargasiana Moullade. - Caron : 652-656, 658 pl. 1; fig. 7-9 (non Globigerina infracretacea gargasiana Moullade, 1961)

? 1982 Hedbergella hoterivica Subbotina. - Crittenden : 30, 31 pl. 2; fig. 1, 2

1993 Praehedbergella ruka contritus Banner et al.. - Banner et al. : p.6 pl. 1; fig. 3a-c, 4a, b

1997 Praehedbergella ruka contritus Banner et al.. - Boudagher-Fadel et al. : p.115 pl. 7.2; fig. 10-12; Figure: 7.1

References:

Caron,M. (1978):
Cretaceous forminifers from D.S.D.P. Leg 40 Southeastern Atlantic Ocean . Initial Reports of the Deep Sea Drilling Project Vol. 40 p. 651-678

Crittenden,S. (1982):
A note on Danian planktonic formatiniferida from the British southern North Sea . Revista Espanola de Micropaleontologia Vol. 14 p. 53-62

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

Anonymous: Unedited TaxonConcept data

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