TaxonConcept: Praehedbergella sigali compacta Banner et al. 1993 from: Boudagher-Fadel, M.K.Banner, F.T.Whittaker, J.E.Simmons, M.D. (1997): Early Evolutionary History of Planktonic Foraminifera. Vol. 1

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Praehedbergella sigali compacta Banner et al. 1993 from: Boudagher-Fadel, M.K.Banner, F.T.Whittaker, J.E.Simmons, M.D. (1997): Early Evolutionary History of Planktonic Foraminifera. Vol. 1

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Subspecies Praehedbergella sigali compacta Banner et al. 1993

Discussion / Comments:

Boudagher-Fadel et al. (1997):
Remarks: This subspecies differs from the typical form of the species in having peripheral intercameral sutural angles of about 150° and more depressed chambers in the last whorl (h/L = 0.8 approx.), producing a more compact test. The chambers of the last whorl become less depressed during growth, and the final chamber is only slightly lower than long. A specimen of H. (H.} sigali figured by Moullade (1966, plate 7, fig. 20), in spite of a rather poor optical photograph taken at a slightly oblique angle (our Plate 7.3, Fig. 9), resembles the subspecies enough to be included here.

Systematics:

22
Superfamilia Globigerinaceae
  Familia Praehedbergellidae
   Subfamilia Praehedbergellinae
    Genus Praehedbergella
     Species Praehedbergella sigali
      Subspecies Praehedbergella sigali compacta

Synonym list:

Boudagher-Fadel et al. (1997):

p 1966 Hedbergella (Hedbergella) sigali Moullade. - Moullade : p. 87, 88 pl. 7; fig. 20 only

1993 Praehedbergella sigali compacta Banner et al.. - Banner et al. : p.8 pl. 2; fig. 3a-c

1997 Praehedbergella sigali compacta Banner et al.. - Boudagher-Fadel et al. : p.117 pl. 7.3; fig. 9-12; Figure: 7.1

References:

Moullade,M. (1966):
Etude stratigraphique et micropaléontologique du Crétacé inférieur de la "fosse vocontienne" . Documents des Laboratoires de Géologie de la Faculté des Sciences de Lyon Vol. 15 p. 1-369

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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