Home > Iowa Academy of Science > Journals & Newsletters > Proceedings of the Iowa Academy of Science > Volume 26 (1919) > Annual Issue
Document Type
Research
Abstract
Few American mollusks equal Helicina occulta Say in interest. It is an operculate species which has been reported at times as aquatic, though it is strictly terrestrial; its living representatives are distributed over widely separated areas in restricted local colonies, and evidently represent a declining race; and it is a common fossil of the loess of peculiar significance, of much more general distribution in the loess-covered portions of the upper Mississippi- Missouri basin, failing to reach the region of the northernmost living colonies, but extending well beyond them westward.
Publication Date
1919
Journal Title
Proceedings of the Iowa Academy of Science
Volume
26
Issue
1
First Page
385
Last Page
390
Copyright
©1919 Iowa Academy of Science, Inc.
Language
en
File Format
application/pdf
Recommended Citation
Shimek, B.
(1919)
"Further Notes on Helicina occulta Say,"
Proceedings of the Iowa Academy of Science, 26(1), 385-390.
Available at:
https://scholarworks.uni.edu/pias/vol26/iss1/37