Zeauvigerina parri Finlay 1939 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 Zeauvigerina parri Finlay 1939 |
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| Diagnosis / Definition: |
Pearson et al. (2006):
DESCRIPTION.
Type of wall: Microperforate, surface smooth to
finely pustulose, pustules irregularly scattered on test
surface.
Test morphology: Test elongate, moderately
tapering in initial portion, later parallel-sided, elliptical
in cross-section; chambers biserial throughout,
increasing gradually in size, slightly inflated, 14-16 in
adult tests; sutures initially indistinct, later distinct and
slightly depressed, nearly perpendicular to growth axis;
aperture an elliptical opening at the terminus of the final
chamber.
Size: Holotype length 0.27 mm; paratype
(USNM 689063) length 0.22 mm, width 0.90 mm,
breadth 0.67 mm. |
| Discussion / Comments: |
Pearson et al. (2006):
DISTINGUISHING FEATURES.-
Differs from other
Eocene zeauvigerinids by lacking a produced neck and
lip surrounding the terminal aperture. It further differs
from Z. zelandica by its more elongate test that
parallel-sided for most of its length.
DISCUSSION-
The taxonomic position, stratigraphic
distribution and phylogeny of this species are uncertain
since the type material is not well preserved and it has
only been recorded in New Zealand.
PHYLOGENETIC RELATIONSHIPS.-
Huber and
Boersma (1994) suggested that Z. parri evolved from
Z.zelandica during the early Eocene.
STRATIGRAPHIC RANGE.-
Lower Eocene Zone E7
to Zone E9; Heretaungan Stage through middle Eocene,
Bortonian Stage in New Zealand (Jenkins, 1971).
GEOGRAPHIC DISTRIBUTION.-
Recorded at southern mid-latitudes sites, including New Zealand (Jenkins, 1971), DSDP Site 277 in the southwest Pacific (Jenkins, 1974) and DSDP Site 5 12 in the South Atlantic (Krasheninnikov and Basov, 1983).
STABLE ISOTOPE PALEOBIOL0GY.-
No data available.
REPOSITORY.-
Holotype deposited in the Geological
and Nuclear Research Institute, Lower Hutt, New
Zealand |
| Systematics: |
35
Ordo Foraminiferida
Superfamilia Globigerinaceae
Familia Heterohelicidae
Genus Zeauvigerina
Species Zeauvigerina parri
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| Synonym list: |
Pearson et al. (2006):
1939 Zeauvigerina parri Finlay. - Finlay : p.320 pl. 27; fig. 70-71 [middle Eocene, Motuotaraia Survey District,
Dannevirke area, New Zealand]
1994 Zeauvigerina parri Finlay. - Huber & Boersma : p. 273-276 text-fig. 6c (illustration of USNM paratype)
2006 Zeauvigerina parri Finlay. - Pearson et al. : p.482 pl. 16.4; fig. 5, 6 (Pl. 16.4, Figs. 5, 6: new SEMs of paratype of
Zeauvigerina parri Finlay)
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| Specimen: |
Smithsonian Museum of Natural History, Washington, D.C., Inventory number: USNM 689063
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| References: |
Finlay,H.J. (1939):
New Zealand foraminifera; key species in stratigraphy, No. 1 . Transactions of the Royal Society of New Zealand Vol. 68
Huber,B.T. and Boersma,A. (1994):
Cretaceous Origin of Zeauvigerina and its Relationship to Paleocene Biserial Planktonic Foraminifera . Journal of Foraminiferal Research Vol. 24 p. 268-287
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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