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Rousseauspira: new gastropod operculum from the Ordovician of Alaska and California
Published online by Cambridge University Press: 14 July 2015
Abstract
Rousseauspira teicherti, a new genus and species of an unusual, untwisted, horn-shaped gastropod operculum from shallow-subtidal limestones of the Upper Ordovician of Alaska and the Middle Ordovician of California, is described and compared to two other Ordovician opercula, Ceratopea Ulrich, 1911, and Teiichispira Yochelson and Jones, 1968. The shell to which the operculum belonged is not yet known.
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- Copyright © The Paleontological Society
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