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. 55c): Pareora striolata (Hutton, 1885), type species of the genus; GS9700, J38/f9681, Sutherlands, Tengawai River, South Canterbury (Altonian) (apex showing protoconch with traces of granular microsculpture, and deep anal sinus). |
  (Pl. 55f): Pareora striolata (Hutton, 1885), type species of the genus; GS9700, J38/f9681, Sutherlands, Tengawai River, South Canterbury (Altonian) |
  (Pl. 55g): Pareora striolata (Hutton, 1885), type species of the genus; GS9700, J38/f9681, Sutherlands, Tengawai River, South Canterbury (Altonian) (lateral view of outer lip showing very deep anal sinus). |
Beu & Maxwell (1990): Chapter 17; p. 382; pl. 55 c,f,g.
Classification: Pareoridae
Description: Height 3-5 mm, elongate-ovate, spire moderately elevated. Protoconch conical or subcylindrical, of about 4 very finely granulose whorls, deviated in some species. Teleoconch whorls strongly convex or somewhat flattened medially, sculptured with spiral cords, obsolete on some species, well developed on others. Aperture ovate, outer lip very thin, rarely preserved complete, with a deep sinus on adapical half, lip swinging well forward below, abapical end somewhat pointed. Base with shallow sinus, outer edge forming a sharp, low ridge ascending within aperture.
Comparison: The minute turitellid-like shell with a tall spire and only spiral sculpture is easily recognised, and the deep sinus in the outer lip and forward-swinging lower lip are highly distinctive. Almost always occurs in large numbers where present.
Distribution: Mangaorapan-Opoitian, New Zealand; Late Eocene, South Australia. Pareora occurs in vast numbers at some localities, e.g. at White Rock River, South Canterbury, the type locality of P. striolata. Pareora apparently ranged across the shelf into the upper bathyal zone.
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)