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. 54i): Alvania (Linemera) pukeuriensis (Finlay, 1924); topotype, GS9685, J41/f9499b, Pukeuri road- cutting, Otago (Altonian) (showing teleoconch microsculpture). |
  (Pl. 54j): Alvania (Linemera) pukeuriensis (Finlay, 1924); topotype, GS9685, J41/f9499b, Pukeuri road- cutting, Otago (Altonian) |
Beu & Maxwell (1990): Chapter 17; p. 378; pl. 54 i,j.
Classification: Rissoidae: Rissoinae
Description: Height 1.5-3.5 mm, elongate-ovate, spire moderately elevated, protoconch of about 1.5 whorls, bulbous, smooth except for very fine granules, in some species granules fused to form short spiral striae. Teleoconch whorls convex; sculpture of axial costae crossed by spiral cords, clathrate in some species, axials dominant in others. Aperture subcircular, peristome continuous, simple; outer lip opisthocline with rather weak varix.
Comparison: Alvania (Linemera) is similar in teleoconch sculpture to Merelina but differs in having an almost smooth protoconch and a simple rather than a duplicated aperture.
Distribution: Kaiatan-Recent, New Zealand; Recent, Australia, South Africa. Modern species range from the inner shelf down to the upper part of the slope.
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)