Rotalipora appenninica Renz 1936 (TaxonConcept

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Species Rotalipora appenninica Renz 1936

Diagnosis / Definition:

Gasinski (1988):
Dimensions: D=0.38-0.65mm, t=0.16-0.32mm

Discussion / Comments:

Caron (1985):
This species differs from R. gandolfii in lacking periumbilical flanges on all chambers; from R. ticinensis in its more lobulate periphery and in fewer chambers forming the last whorl.
Gasinski (1988):
Remarks: Rotalipora balernaensis (Gandolfi) has been considered to be a synonym of R. appenninica by Wonders (1980), Gas&ski (1983) and Caron (1985) whereas Magniez-Jannin (1981; pl. 1, figure 4) distinguished both forms at subspecies level. Some authors have followed Wonders (1980) and suggested that R. gandol’ Luterbacher & Premoli Silva is a synonym of R. appenninica (e.g. Weidich, 1984). I n my opinion the difference between R. appenninica and R. gandolfi is not so great; both are probably ecophenotypes within the intra-specific variation of R. appenninica. However, in many recent papers R. gandoZ$ is distinguished as a separate species and is even used as a stratigraphic marker by Robaszynski & Caron (1979) and Caron (1985). I,ocal stratigraphic range: P. buxto+R. appenninica to the top of R. appenninica Zones.

Systematics:

5
Classis Foraminifera
  Familia Globotruncanidae
   Genus Rotalipora
    Species Rotalipora appenninica

22
  Familia Globotruncanidae
   Genus Rotalipora
    Species Rotalipora appenninica

Synonym list:

Caron (1985):

1936 Globotruncana appenninica Renz. - Renz : 14, 20, 71 fig 2; fig 7a ; pl 6 figs 1-11; pl 8 fig 4

1942 Globotruncana appenninica α Gandolfi. - Gandolfi : p.118 text-fig 40

1957 Globotruncana (Rotalipora) appenninica balernaensis Gandolfi. - Gandolfi : p.60 pl 8 figs 3a-c

1985 Rotalipora appenninica Renz. - Caron : 70, 72 figs 31.1-4

Gasinski (1988):

1988 Rotalipora appenninica Renz. - Gasinski : 126, 237 fig. 14h, i, k; fig. 15a-f

References:

Renz,O. (1936):
Stratigraphie und mikropaläontologische Untersuchung der Scaglia (Obere Kreide-Tertiär) im zentralen Apennin . Ecoglae geologicae Helvetiae Vol. 29 p. 1-149

Gandolfi,R. (1942):
Ricerche micropaleontologiche e stratigraphiche sulla Scaglia e sul Flysch cretacici dei dintorni di Balerna (Canton Ticino) . Rivista Italiana di PaleontologiaMemoria 4 p. 1-160

Gandolfi,R. (1957):
Notes on some species of Globotruncana . Contributions from the Cushman Foundation for Foraminiferal Research Vol. 8(2) p. 59-65

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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