Revised descriptions of New Zealand Cenozoic Mollusca from Beu and Maxwell (1990)
| | Revised descriptions of New Zealand Cenozoic Mollusca from Beu and Maxwell (1990) |
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  (Pl. 54h): Nozeba couttsi Laws, 1950; topotype, GS3528, R11/f7014, Otahuhu brewery well, Auckland (Waipipian) |
  (Pl. 54k): Nozeba couttsi Laws, 1950; topotype, GS3528, R11/f7014, Otahuhu brewery well, Auckland (Waipipian) (apex showing large dome-shaped protoconch). |
Beu & Maxwell (1990): Chapter 17; p. 382; pl. 54 h,k.
Classification: Iravadiidae
Description: Height 1.4-3.2 mm, ovate, spire only moderately elevated. Protoconch dome-shaped, flattened on top, of 2-2.25 smooth whorls. Teleoconch whorls flat-sided to weakly convex, last whorl capacious; sculpture absent or consisting of narrow spiral grooves. Aperture ovate, anterior end rounded or broadly excavated; inner lip thickened in parietal region, partly detached in some species; outer lip with low varix.
Comparison: Nozeba was long referred to the Rissoidae, but is now included in the Iravadiidae (Ponder 1984, p. 54). Most New Zealand species are from shallow-water (inner shelf) habitats, but some apparently lived in the mid- or outer shelf regions. One modern Australian species lives in estuaries (Ponder 1984, p. 56). (Finlay (1924c, p. 490-491) described two taxa, Nozeba candida and N. candida var. effusa from Mount Harris Formation, Pukeuri (Altonian) — they were considered to be synonyms by Beu & Maxwell (1990)).
Distribution: Mangaorapan ?; Bortonian-Recent, New Zealand; south-eastern Australia, Europe, North America, Late Cretaceous — Recent.
Cite this publication as: "A.G. Beu and J.I. Raine (2009). Revised
descriptions of New Zealand Cenozoic Mollusca from Beu and Maxwell (1990). GNS
Science miscellaneous series no. 27."
© GNS Science, 2009
ISBN
978-0-478-19705-1
ISSN 1177-2441
(Included with a PDF facsimile file
copy of New Zealand Geological Survey Paleontological Bulletin 58 in CD version
from: Publications Officer, GNS Science, P.O. Box 30368 Lower Hutt, New
Zealand)