Chiloguembelina trinitatensis Cushman & Renz 1942 from: Pearson, P.N.Olsson, R.K.Hemleben, C.Huber, B.T.Berggren, W.A. (2006): Atlas of Eocene Planktonic Foraminifera. p. 1-513 | . |
Notice: This catalogue page may contain unedited data.
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Species Chiloguembelina trinitatensis Cushman & Renz 1942 |
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| Diagnosis / Definition: |
Pearson et al. (2006):
DESCRIPTION.
See Olsson and others (1999) for description and
discussion of this species. |
| Discussion / Comments: |
Pearson et al. (2006):
DISTINGUISHING FEATURES.-
Distinguished by
its biserial test with 5-6 pairs of inflated chambers that
increase uniformly in breadth and height, forming a
moderately tapered outline in side view, and by the
symmetrically centered, low-arched aperture that is
surrounded by a narrow, equidimensional lip (see Olsson
and others, 1999 for holotype illustrations and additional
information). Rare specimens with two apertures (e.g.,
P1. 16.2, Fig. l) are placed in C. trinitatensis rather than
C. crinita because of the presence of an equidimensional,
rather than asymmetrically folded, bordering lip.
Chiloguembelina trinitatensis has uniformly tapering test
outline unlike C. wilcoxensis, which has a rapidly
tapering test outline in the early portion of the test then
becomes parallel sided with the last two pairs of adult
chambers.
PHYLOGENETIC RELATIONSHIPS-
Evolved from
Chiloguembelina wilcoxensis during the latest
Paleocene.
STRATIGRAPHTC RANGE.-
Upper Paleocene Zone
P5 to lower Eocene Zone E3 (upper part).
STABLE ISOTOPE PALEOBIOLOGY.-
No data
available. |
| Systematics: |
35
Ordo Foraminiferida
Superfamilia Globigerinaceae
Familia Chiloguembelinidae
Genus Streptochilus
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| Synonym list: |
Olsson et al. (1999):
1957 Chiloguembelina trinitatensis Cushman & Renz. - Beckmann : p. 91 pl. 21, fig. 7, text-fig. 15 (43-45) (Globorotalia velascoensis Zone, Lizard Springs Fm., Trinidad).
1957 Chiloguembelina trinitatensis Cushman & Renz. - Beckmann : p.91 pl. 21, fig. 7;
text-fig. 15 (43-45) [Globorotalia velascoensis Zone, Lizard Springs
Fm., Trinidad]
1965 Chiloguembelina trinitatensis Cushman & Renz. - McGowran : p.68 pl. 5, fig. 4;
text-fig. 14 [upper Paleocene, Wangerrip Group, western
Victoria]
1971 Chiloguembelina trinitatensis Cushman & Renz. - Jenkins : p.67 pl. 1; fig. 8-9 [upper
Paleocene, mid-Waipara River, South Island, New
Zealand]
1999 Chiloguembelina trinitatensis Cushman & Renz. - Olsson et al. : p.92 pl. 13, fig. 11, 16;
pl. 70, fig. 8-10, 14 (illustration of USNM holotype) [upper Paleocene Zone P5, DSDP Site 152, Nicaragua
Rise, Caribbean Sea]
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| References: |
Cushman,J.A. and Renz,H.H. (1942):
Eocene, Midway, Foraminifera from Soldado Rock, Trinidad . Contributions from the Cushman Foundation for Foraminiferal Research Vol. 18 p. 1-20
Beckmann,J.P. (1957):
Chiloguembelina Loeblich and Tappan and Related Foraminifera from the Lower Tertiary.
In: Studies in Foraminifera, United States National Museum Bulletin Vol. 215 Eds: Loeblich, A.R.et al. p. 83-95
McGowran,B. (1965):
Two Paleocene Foraminiferal Faunas from the Wangerrip Group, Pebble Point Coastal Section, Western Australia . Proceedings Royal Society Victoria Vol. 79 p. 9-74
Jenkins,D.G. (1971):
New Zealand Cenozoic Planktonic Foraminifera . New Zealand Geological Survey Paleontological Bulletin Vol. 42
Olsson,R.K.; Berggren,W.A.; Hemleben,C. and Huber,B.T. (1999):
Atlas of Paleocene planktonic foraminifera - online version. , Smithsonian Contributions to Paleobiology Vol. 85 p. 1-252
Pearson,P.N.; Olsson,R.K.; Hemleben,C.; Huber,B.T. and Berggren,W.A. (2006):
Atlas of Eocene Planktonic Foraminifera. p. 1-513
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