Hedbergella simplex Morrow 1934 (TaxonConcept

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Species Hedbergella simplex Morrow 1934

Diagnosis / Definition:

Gasinski (1988):
Dimensions: D=0.18-O.5Omm, t=O.lO-0.18mm

Discussion / Comments:

Caron (1985):
This species shows great morphological variability particularly in the degree of radial chamber elongation in the last whorl. It is similar to H. flandrini, from which it differs in the still stronger and more distinct elongation of the last chambers.
Gasinski (1988):
Remarks: H. amabilis (Loeblich & Tappan) and H. simplicissima (Magne & Sigal) are considered to be synonyms of H. simplex here (see also Robaszynski & Caron, 1979 and Weidich, 1984). Leckie (1984) placed H. simplicissima in synonymy with H. amabilis, but he does not mention H. simplex. Weidich (1984) a 1s o included H. jlandrini Porthault as a synonym of H. simplex, but these species have been considered distinct in many systematic studies (Robaszynski & Caron, 1979; Wonders, 1980; Caron, 1985). Several authors continue to use H. amabilis (Carter & Hart, 1977; Gradstein 1978; McNulty, 1979; Miles & Orr, 1980; Haig, 1981) and even H. simplicissimu (Masters, 1977; Peryt, 1980). Local stratigraphic range: R. ticinensis-P. buxtor$ to R. reicheli-R. greenhornenesis Zones.

Systematics:

5
Classis Foraminifera
  Familia Globotruncanidae
   Genus Hedbergella
    Species Hedbergella simplex

22
  Familia Globotruncanidae
   Subfamilia Hedbergellinae
    Genus Hedbergella
     Species Hedbergella simplex

Synonym list:

Caron (1985):

1934 Hastigerinella simplex Morrow. - Morrow : p.198 pl 30 fig 6

1954 Hastigerinella simplicissima Magné & Sigal. - Cheylan et al. : pl 14 figs 11a-c

1961 Hedbergella amabilis Loeblich & Tappan. - Loeblich & Tappan : pl 3 figs 1a-c

Gasinski (1988):

1988 Hedbergella simplex Morrow. - Gasinski : 233, 234 fig. 12m; fig. 13a-d

References:

Morrow,A.L. (1934):
Foraminifera and Ostracoda from the Upper Cretaceous of Kansas . Journal of Paleontology Vol. 8 p. 186â€“205

Cheylan,G.; Magné,J.; Sigal,J. and Grékoff,N. (1954):
Résultats géologiques et micropaléontologiques du sondage d\'El Krachem (Haut plateau Algérois).Description de quelques espèces nouvelles . Bulletins de la Société Géologique de France Vol. 6(4) p. 471-488

Loeblich,A.R. and Tappan,H. (1961):
Cretaceous planktonic foraminifera: Part I-Cenomanian . Micropaleontology Vol. 7 p. 257-304

Caron,M. (1985):
Cretaceous planktic foraminifera.
In: Plankton stratigraphy Eds: Bolli, H.M.Saunders, J.B.Perch-Nielsen, K. p. 17–86

Gasinski,M.A.. (1988):
Foraminiferal biostratigraphy of the Albian and Cenomanian sediments in the Polish part of the Pieniny Klippen Belt, Carpathian Mountains. . Cretaceous Research Vol. 9 p. 217-247

Anonymous: Unedited TaxonConcept data

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