Cladus: Eukaryota Name Paracyrtolites G.P. Wahlman, 1992 Reference * Middle and Upper Ordovician symmetrical univalved molluscs (Monoplacophora and Bellerophontina) of the Cincinnati Arch region. United States Geological Survey Professional Paper, 1992, 1066(O), 1-123. Source: Wikispecies: All text is available under the terms of the GNU Free Documentation License |
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