The Late Ordovician tropidodiscid gastropod Alaskadiscus, known only in two areas in Alaska, was named by Rohr, Frýda, and Blodgett (2003). Peter Wagner and Stephen K. Donovan have pointed out to us that the name was previously used for a Cambrian trilobite, AlaskadiscusZhang, 1980. We propose the new name Alaskodiscus with the same type species, A. donensis Rohr, Frýda and Blodgett, 2003. We feel the similarity in names is not likely to cause undue confusion since the taxa are widely separated by phyla and age.

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The shell of Alaskodiscus is similar in many ways to TropidodiscusMeek...

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