Planomalina buxtorfi Gandolfi 1942 (TaxonConcept

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Species Planomalina buxtorfi Gandolfi 1942

Diagnosis / Definition:

Gasinski (1988):
Dimensions: D = 0.38-0.96 mm, t = 0.1 S-O.48 mm

Discussion / Comments:

Caron (1985):
Transitional forms between the assumed ancestor Globigerinelloides bentonensis and P. buxtorfi were described by Wonders (1975) as P. praebuxtorft which differs in lacking a complete keel along the equatorial periphery.
Gasinski (1988):
Remarks: Several morphological groups have been distinguished within P. buxtor$ according to morphological variations in the investigated material. Some of these are based on the development of the peripheral margin (more or less distinct), sutures (depressed to elevated) and the position and shape of the aperture. They may well represent separate taxa within this relatively long-ranging species (compare Figures 13i and 1). Similar features (i.e. the development and nature of the peripheral margin and the presence of less elevated sutures) were applied by Wonders for the erection of P. praebuxtor$ (1975). Most specimens from the Czorsztyn succession are larger (D =0.50-0.96 mm) and more involute than those from the so-called Trawne Beds (Gasinski, 1983) and are similar to those illustrated by Magniez- Jannin (1981) from Kent, UK. Ilocal stratigraphic range: R. ticinens&P. buxtorfi to P. buxtorj%R. appenninica Zones.
Boudagher-Fadel et al. (1997):
Remarks: This species is distinguished by having eight chambers in the last whorl (increasing gradually in size as added), and by being fully muricocarinate (possessing an entire peripheral keel round the margin and extending into the sutures).

Systematics:

5
Classis Foraminifera
  Familia Planomalinidae
   Genus Planomalina
    Species Planomalina buxtorfi

22
  Superfamilia Globigerinaceae
   Familia Planomalinidae
    Genus Planomalina
     Species Planomalina buxtorfi

52
  Familia Planomalinidae
   Genus Planomalina
    Genus Schackoina
     Species Planomalina buxtorfi
      Species Schackoina cenomana

Synonym list:

Moullade et al. (2002):

1942 Planulina buxtorfi Gandolfi. - Gandolfi : p.103 pl. 3 fig 7;pl 5 figs 3-6; pl 6 figs 1-3; pl 8 fig 8; pl 9 fig 2; pl 12 fig 2; pl 13 figs 13, 15; text-fig. 35:1-11

1946 Planomalina apidostroba Loeblich & Tappan. - Loeblich & Tappan : p.258 pl 37 figs 22,23

Caron (1985):

1942 Planulina buxtorfi Gandolfi. - Gandolfi : p.103 pl 3 figs 7a-c

1946 Planomalina apidostroba Loeblich & Tappan. - Loeblich & Tappan : p.258 pl 37 figs 22-23

1975 Planomalina buxtorfi Gandolfi. - Wonders : pl 1 fig 4, text-fig 4, figs 3a-b, 4a-b

1985 Planomalina buxtorfi Gandolfi. - Caron : 66, 67 figs 29.1-2

Loeblich & Tappan (1961):

1942 Planulina buxtorfi Gandolfi. - Gandolfi : p.103 pl. 3, fig. 7; pl. 5, fig. 3-6; pl. 6, fig. 1-3; pl. 8, fig. 8; pl. 9, fig. 2; pl. 12, fig. 2; pl. 13, fig. 13, 15; text-fig. 35 (1-11)

1946 Planomalina apsidostroba Loeblich & Tappan. - Loeblich & Tappan : p.258 pl. 37; fig. 22, 23

1948 Planulina buxtorfi Gandolfi. - Cita : p.15 pl. 2; fig. 13

1948 Planomalina? almadenensis Cushman & Todd. - Cushman & Todd : p.98 pl. 16; fig. 25

1950 Planomalina buxtorfi Gandolfi. - Reichel : p.616 [footnote]

1952 Planulina buxtorfi Gandolfi. - Sigal : p.23 fig. 22

1952 Planomalina apsidostroba Loeblich & Tappan. - Bermudez : p.92 pl. 16; fig. 4-6

1954 Planomalina apsidostroba Loeblich & Tappan. - Frizzell : p.131 pl. 21; fig. 11

1955 Planomalina buxtorfi Gandolfi. - Küpper : p.117 pl. 18; fig. 8

1956 Planomalina buxtorfi Gandolfi. - Brönnimann & Brown : text-fig. 15

1957 Planomalina apsidostroba Loeblich & Tappan. - Bolli et al. : p.23 pl. 1; fig. 2-3

1957 Planomalina buxtorfi Gandolfi. - Gandolfi : p.64 pl. 8; fig. 6

1959 Planomalina apsidostroba Loeblich & Tappan. - Bykova et al. : p.287 text-fig. 595-596

1959 Planomalina cf. apsidostroba Loeblich & Tappan. - Bolli : p.259 pl. 20; fig. 1

1961 Planomalina buxtorfi Gandolfi. - Loeblich & Tappan : p.283 pl. 2; fig. 1, 2

Gasinski (1988):

1942 Planulina buxtorfi Gandolfi. - Gandolfi : p.103 pl. 3; fig. 7

1988 Planulina buxtorfi Gandolfi. - Gasinski : p.234 fig. 13i-l

Boudagher-Fadel et al. (1997):

1942 Planomalina buxtorfi Gandolfi. - Gandolfi : p.103 pl. 3; fig. 7a-c

1946 Planomalina apsidostroba Loeblich & Tappan. - Loeblich & Tappan : p.258 pl. 37; fig. 22, 23

1975 Planomalina nomen emend. buxtorfi Gandolfi. - Wonders : pl. 1, fig. 4, text-fig. 4, fig. 3a, b, 4a, b

1985 Planomalina buxtorfi Gandolfi. - Caron : p.65 fig. 29.1-2

1997 Planomalina buxtorfi Gandolfi. - Boudagher-Fadel et al. : p.227 pl. 12.6; fig. 7-9; Figure: 12.1

References:

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

Loeblich,A.R. and Tappan,H. (1946):
New Washita foraminifera . Journal of Paleontology Vol. 20 p. 238-258

Cita,M.B. (1948):
Ricerche stratigrafiche e micropaleontologiche sul Cretacico e sull 'Eocene di Tignale (Lago di Garda) . Riv. Ital. Pal. Strat. Vol. 54(2) p. 49-74

Cushman,J.A. and Todd,R. (1948):
A foraminiferal fauna from the New Almaden District California . Contributions from the Cushman Foundation for Foraminiferal Research Vol. 24 p. 90–98

Reichel,M. (1950):
Observations sur les Globotruncana du grisement de la Breggia (Tessin) . Ecoglae geologicae Helvetiae Vol. 42 p. 596-617

Bermudez,P.J. (1952):
Estudio sistematico de los Foraminiferos rotaliformes . Venezuela Minist. Minas e Hidrocarb., Bol. Geol. Vol. 2(4) p. 1-230(pls.1-35)

Sigal,J. (1952):
Apercu stratigraphique sur la Micropaléontologie du Crétacé . XIXe Congrès Géologique International (Série 1), Alger Vol. 26 p. 3-47

Frizzell,D.L. (1954):
Handbook of Cretaceous foraminifera of Texas . Texas Univ., Bur. Econ. Geol., Rept. Invest. Vol. 22 p. 1-232(pls.1-21)

Küpper,K.. (1955):
Upper Cretaceous foraminifera from the "Franciscan series", New Almaden district, California . Cushman Found. Foram. Res. Contr. Vol. 6(3) p. 112-118(pl.18)

Brönnimann,P. and Brown,N.K. (1956):
Taxonomy of the Globotruncanidae . Ecoglae geologicae Helvetiae Vol. 48 p. 503-561

Bolli,H.M.; Loeblich,A.R. and Tappan,H. (1957):
Planktonic foraminifera families Hantkeninidae, Orbulinidae, Globorotaliidae and Globotruncanidae . United States National Museum Bulletin Vol. 215 p. 3-50

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

Bykova,N.K.; Vasilenko,V.P..; Voloshinova,N.A..; Myatiliuk,E.V.. and Subbotina,N.N. (1959):
Rotaliidac.
In: Osnovyie Paleontologii: Obsschaya chast, Prosteishie Eds: Rauser-Chernoussova, D.M..Fursenko, A.V.. p. 265-307

Bolli,H.M. (1959):
Planktonic foraminifera from the Cretaceous of Trinidad, B.W.I. . Bulletins of American Paleontology Vol. 39 p. 257-277

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

Wonders,A.A.H. (1975):
Cretaceous planktonic foraminifera of the Planomalina buxtorfi group from El Burrueco, southern Spain . Koninklijke Nederlandse Akademie van Wetenschappen, Amsterdam, Proceedings, Series B Vol. 78 p. 83-93

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

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.; 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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