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Zeauvigerina zelandica 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
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Anonymous: Unedited TaxonConcept data
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Species Zeauvigerina zelandica Finlay 1939


Diagnosis / Definition:
Pearson et al. (2006):
DESCRIPTION. Type of wall: Microperforate, finely pustulose, lacking pore mounds. Test morphology: Test small, elongate, moderately tapering, periphery rounded rather than compressed; chambers biserial throughout, initially compressed, later globular, increasing gradually in size, 14-16 in adult tests, sutures distinct, moderately depressed, nearly perpendicular to the growth axis; aperture terminal on a variably produced neck, surrounded by a narrow lip. Size: Holotype length not stated; length of paratypes 0.2 1-0.28 mm, width 0.10-0.14 mm, breadth 0.08-0.09 mm.
Discussion / Comments:
Pearson et al. (2006):
DISTINGUISHTNG FEATURES- Distinguished from other zeauvigerinids by having a more elongate neck on the terminal uniserial chamber that is surrounded by a distinct rim. DTSCUSST0N.- Huber and Boersma (1 994, p. 278- 279) noted similarity in the ontogenetic morphologies of Z. zelandica and Z. aegyptiaca and suggested that they may be synonymous. PHYLOGENETlC RELATIONSHIPS.- Huber and Boersma (1994) suggested that Z. zelandica evolved from Z. aegyptiaca during the earliest Eocene and gave rise to Z. parri during the middle early Eocene. STRATIGRAPHIC RANGE.- Lowermost Eocene-upper Eocene (~Zones El -E 14). Tn New Zealand recorded from middle Waipawan through middle Kaiatan Stage. Also reported by Takayanagi and Oda (1976) in upper Eocene sediments in DSDP Hole 3 17B (equatorial South Pacific). GEOGRAPHTC DISTRIBUTION- This species has rarely been recorded outside New Zealand. STABLE ISOTOPE PALEOBIOL0GY.- No data available.
Systematics:

35
 Ordo Foraminiferida
  Superfamilia Globigerinaceae
   Familia Heterohelicidae
    Genus Zeauvigerina
     Species Zeauvigerina zelandica
Synonym list:
Pearson et al. (2006):
1939 Zeauvigerina zelandica Finlay. - Finlay : p.541 pl. 69; fig. 4a, b [upper middle Eocene, New Zealand]
1994 Zeauvigerina zelandica Finlay. - Huber & Boersma : p. 278-279 text-fig. 6e, 11 (illustration of USNM paratype)
2006 Zeauvigerina zelandica Finlay. - Pearson et al. : p.482 pl. 16.4; fig. 7-12 (Pl. 16.4, Figs. 7, 8: new SEMS of paratype of Zeauvigerina zelandica Finlay)
Specimen:
Geological and Nuclear Science Institute, Lower Hutt, New Zealand, Inventory number: 26775a
Geological and Nuclear Science Institute, Lower Hutt, New Zealand, Inventory number: 26775b
Geological and Nuclear Science Institute, Lower Hutt, New Zealand, Inventory number: 26776a
Geological and Nuclear Science Institute, Lower Hutt, New Zealand, Inventory number: 26776b
Smithsonian Museum of Natural History, Washington, D.C., Inventory number: USNM 689049
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
Anonymous: Unedited TaxonConcept data
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