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Revision of some common Carboniferous genera of North American orthocerid nautiloids
Published online by Cambridge University Press: 20 May 2016
Extract
Reading the voluminous lists of synonymy of the taxa described in this report, it may seem useless at first glance to add yet more descriptions and potentially continue an already confused situation. However, as taxonomists know, long lists of synonymy may indicate that certain taxa serve as a “garbage-can” for specimens which lack distinctive morphological features. An example of a “garbage-can taxon” is the pseudorthoceratid genus Mooreoceras Miller, Dunbar, and Condra, 1933, which originally was very broadly defined and therefore comprised about 40 species.
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