Letter | Published:

Classification of Spiral Foraminifera

Nature volume 155, page 81 (20 January 1945) | Download Citation

Subjects

Abstract

THE members of certain pairs of foraminiferal genera (Nummulites and Operculinoides, Assilina and Operculina, etc.) with flat spiral tests are distinguished from each other only by the rates (or angles) of opening of their spires. It therefore seems anomalous that no ruling exists as a guide in separating forms after this manner; for although the right allocation is often obvious, there are intermediate forms which might, at present, be as legitimately referred to one genus as to the other, in each of these pairs.

Access optionsAccess options

Rent or Buy article

Get time limited or full article access on ReadCube.

from$8.99

All prices are NET prices.

Author information

Affiliations

  1. Grant Institute of Geology, University of Edinburgh. Nov. 20.

    • L. M. DAVIES

Authors

  1. Search for L. M. DAVIES in:

About this article

Publication history

Published

DOI

https://doi.org/10.1038/155081b0

Comments

By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.