Blefuscuiana hexacamerata 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 Blefuscuiana hexacamerata |
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| Diagnosis / Definition: |
Boudagher-Fadel et al. (1997):
Diagnosis: Characterized by its flat to concave spiral and by having six chambers in the final whorl. |
| Discussion / Comments: |
Boudagher-Fadel et al. (1997):
Description: Test about 230 µm at its maximum
diameter, comprising two to three whorls coiled
in a low trochospire, partially evolute and concave
on spiral side with six chambers in the last whorl,
inflated, subglobular (h/L = 1 approx.). The first
chambers of the last whorl, when seen on the spiral
side, are slightly longer than high, but as high as
long in the last three chambers. The dorsal side is
flat to concave. The umbilicus is small (u/uh = 0.3
approx.) and deep and the aperture is a narrow
slit. Perforation cones have not been found on this
species.
Remarks: B. hexacamerata differs from B.
infracretacea (Glaessner) occidentalis BouDagher-
Fade1 et al. by its partially evolute and concave
spiral side and by its higher number of chambers
on the umbilical side, and from B. gorbachikae
(Longoria) by the higher number of chambers in
the last whorl and by the absence of an overhanging
last chamber. The test is thicker, and its umbilicus
is smaller than in B. aptiana (Bartenstein). |
| Synonym list: |
Boudagher-Fadel et al. (1997):
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| References: |
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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This work is licensed under a Creative Commons Attribution 2.5 License.
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