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Rohr, D. M.; Boyce, W. D.; Knight, I.; Measures, E. A. (2008). The rostroconch mollusc Euchasma Billings, 1865 from the Lower Ordovician Catoche Formation, western Newfoundland. Newfoundland and Labrador Department of Natural Resources, Geological Survey, Report 08-1, pp. 79-91.
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Rohr, D. M.; Boyce, W. D.; Knight, I.; Measures, E. A.
2008
The rostroconch mollusc <i>Euchasma</i> Billings, 1865 from the Lower Ordovician Catoche Formation, western Newfoundland
Newfoundland and Labrador Department of Natural Resources, Geological Survey, Report 08-1, pp. 79-91
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Eopteriidae S. A. Miller, 1889 † (basis of record)
Euchasma Billings, 1865 † (basis of record)
Euchasma blumenbachi [sic] † accepted as Euchasma blumenbachii (Billings, 1859) † (basis of record)
Euchasma blumenbachii (Billings, 1859) † (basis of record)
Euchasma Billings, 1865 † (basis of record)
Euchasma blumenbachi [sic] † accepted as Euchasma blumenbachii (Billings, 1859) † (basis of record)
Euchasma blumenbachii (Billings, 1859) † (basis of record)
