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| Orthis prisca, Orthida, Rhynchonellata (19 mm), colno 60230 Gees, Rheinland-Pfalz, Eifel, Germany Formation unknown, Devonian |
Orthis striatula, Orthida, Rhynchonellata (22 mm), colno 60195 Gerolstein, Rheinland-Pfalz, Eifel, Germany Formation unknown, Devonian |
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| Orthis striatula, Orthida, Rhynchonellata (20 mm), colno 60242 Gees, Rheinland-Pfalz, Eifel, Germany Formation unknown, Devonian |
Platystrophia species, Orthida, Rhynchonellata (50 mm), colno 22453 Adams County, Ohio, USA Formation unknown, Ordovician |
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