You are not currently logged in.
Access JSTOR through your library or other institution:
If You Use a Screen ReaderThis content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
A Naticopsis Operculum Found in situ (Gastropoda: Mississippian)
Mackenzie Gordon, Jr. and Ellis L. Yochelson
Journal of Paleontology
Vol. 56, No. 1 (Jan., 1982), pp. 260-265
Published by: SEPM Society for Sedimentary Geology
Stable URL: http://www.jstor.org/stable/1304513
Page Count: 6
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Preview not available
A new gastropod species, Naticopsis (Naticopsis?) buttsi, occurs in beds of St. Louis (middle Viséan) age in the Greenbrier Limestone of southwestern Virginia. One paratype contains the operculum preserved within the aperture. This operculum is a platelike structure showing concentric growth; it is the oldest known neritacean operculum in North America and the first found in situ. This specimen confirms earlier opinions that assigned opercula of this general growth form to the Neritacea. The operculum differs markedly from that of Hypodema, an operculum from upper Viséan beds in Belgium.
Journal of Paleontology © 1982 SEPM Society for Sedimentary Geology