pforams@mikrotax - Zeauvigerina parri pforams@mikrotax - Zeauvigerina parri

Zeauvigerina parri


Classification: pf_cenozoic -> Guembelitrioidea -> Heterohelicidae -> Zeauvigerina -> Zeauvigerina parri
Sister taxa: Z. lodoensis, Z. parri, Z. zelandica, Z. aegyptiaca, Z. teuria, Z. virgata, Z. waiparaensis, Z. sp.

Taxonomy

Citation: Zeauvigerina parri Finlay 1939
Taxonomic rank: species
Basionym: Zeauvigerina parri
Synonyms:
Taxonomic 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. [Huber et al. 2006]

Catalog entries: Zeauvigerina parri

Type images:

Distinguishing features:
Parent taxon (Zeauvigerina):
This taxon: 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 is parallel-sided for most of its length.

NB These concise distinguishing features statements are used in the tables of daughter-taxa to act as quick summaries of the differences between e.g. species of one genus.
They are being edited as the site is developed and comments on them are especially welcome.

Description


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 to 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. [Huber et al. 2006]

Wall type:
Microperforate, surface smooth to finely pustulose, pustules irregularly scattered on test surface. [Huber et al. 2006]

Size:
Holotype length 0.27 mm; paratype (USNM 689063) length 0.22 mm, width 0.90 mm, breadth 0.67 mm. [Huber et al. 2006]

Character matrix
test outline:Subtriangularchamber arrangement:Biserialedge view:Compressedaperture:Terminal
sp chamber shape:Subrectangularcoiling axis:N/Aperiphery:N/Aaperture border:N/A
umb chbr shape:Subrectangularumbilicus:N/Aperiph margin shape:Moderately roundedaccessory apertures:N/A
spiral sutures:Moderately depressedumb depth:N/Awall texture:Finely pustuloseshell porosity:Microperforate: <1µm
umbilical or test sutures:Moderately depressedfinal-whorl chambers:2-2 N.B. These characters are used for advanced search. N/A - not applicable

Biogeography and Palaeobiology


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 512 in the South Atlantic (Krasheninnikov and Basov, 1983). [Huber et al. 2006]

Isotope paleobiology
No data available. [Huber et al. 2006]

Phylogenetic relations
Huber and Boersma (1994) suggested that Z. parri evolved from Z. zelandica during the early Eocene. [Huber et al. 2006]

Most likely ancestor: Zeauvigerina zelandica - at confidence level 4 (out of 5). Data source: Huber et al. 2006 fig16.2.

Biostratigraphic distribution

Geological Range:
Notes: Lower Eocene Zone E7 to Zone E9; Heretaungan Stage through middle Eocene, Bortonian Stage in New Zealand (Jenkins, 1971). [Huber et al. 2006]
Last occurrence (top): within E9 zone (43.23-43.85Ma, top in Lutetian stage). Data source: Huber et al. 2006
First occurrence (base): within E7 zone (45.72-50.20Ma, base in Ypresian stage). Data source: Huber et al. 2006

Plot of occurrence data:

Primary source for this page: Huber et al. 2006 - Eocene Atlas, chap. 16, p. 481

References:

Finlay, H. J. (1939a). New Zealand foraminifera: Key species in stratigraphy - no. 1. Transactions of the Royal Society of New Zealand. 68: 504-533. gs

Huber, B. T. & Boersma, A. (1994). Cretaceous origination of Zeauvigerina and its relationship to Paleocene biserial planktonic foraminifera. Journal of Foraminiferal Research. 24: 268-287. gs

Huber, B. T., Olsson, R. K. & Pearson, P. N. (2006). Taxonomy, biostratigraphy, and phylogeny of Eocene microperforate planktonic foraminifera (Jenkinsina, Cassigerinelloita, Chiloguembelina, Streptochilus, Zeauvigerina, Tenuitella, and Cassigerinella) and Problematica (Dipsidripella). In, Pearson, P. N., Olsson, R. K., Hemleben, C., Huber, B. T. & Berggren, W. A. (eds) Atlas of Eocene Planktonic Foraminifera. Cushman Foundation for Foraminiferal Research, Special Publication . 41(Chap 16): 461-508. gs O

Jenkins, D. G. (1971). New Zealand Cenozoic Planktonic Foraminifera. New Zealand Geological Survey, Paleontological Bulletin. 42: 1-278. gs

Jenkins, D. G. (1974). Paleogene planktonic foraminifera of New Zealand and the Austral Region. Journal of Foraminiferal Research. 4(4): 155-170. gs

Krasheninnikov, V. A. & Basov, I. A. (1983). Stratigraphy of Cretaceous sediments of the Falkland Plateau based on planktonic foraminifers, Deep Sea Drilling Project, Leg 71. Initial Reports of the Deep Sea Drilling Project. 71: 789-820. gs


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Zeauvigerina parri compiled by the pforams@mikrotax project team viewed: 14-2-2025

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