Compactogerina stellapolaris Grigelis 1977 from: Boudagher-Fadel, M.K.Banner, F.T.Whittaker, J.E.Simmons, M.D. (1997): Early Evolutionary History of Planktonic Foraminifera. Vol. 1 . |
Notice: This catalogue page may contain unedited data.
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Species Compactogerina stellapolaris Grigelis 1977 |
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Discussion / Comments: |
Boudagher-Fadel et al. (1997):
Remarks: The holotype figured by Grigelis
(1977) is a specimen with a very compact test, in
which the sutures are only very slightly depressed
and the equatorial periphery is not lobulate. This
morphology agrees with that of two metatypes
illustrated here (Plate 2.7, Figs 1-3,7). The sutures
of another topotypic specimen also illustrated on
Plate 2.7 (Figs 4-6), however, are much more
depressed and the equatorial periphery is more
lobulate; if the specimens figured here are indeed
all conspecific, then they give a view of the range
of the variation which occurred in the species, but
not enough specimens are available to us to be
sure. The aperture possesses a narrow lip which
partly covers the umbilicus (this lip appears to be
broken away on Plate 2.7, Fig. 6). |
Synonym list: |
Boudagher-Fadel et al. (1997):
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References: |
Grigelis,A.A.; Mesezhinikov,M.S..; Yakovleva,S.P.. and Kozlova,G.E.. (1977): The first finds of planktonic foraminifera in the Upper Jurassic of the Pechora River basin . Doklady Akademii Nauk SSSR Vol. 233 p. 926-927
Boudagher-Fadel,M.K.; Banner,F.T.; Whittaker,J.E. and Simmons,M.D. (1997): Early Evolutionary History of Planktonic Foraminifera. Vol. 1
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