MolluscaBase name details
From editor or global species database
Type locality Two localities are mentioned in Conrad (1871), whereas the second one seems more likely, since most of the material seems to come from there: "at Pebas, near the mouth of the Ambiyacu [or] nearly 30 miles below Pebas, on the south side of the Marafion, at Pichua, just west of Cochaquinas. The locality is about 2200 miles up the Amazon, and the shells appear to be more abundant even than at Pebas. They occur in that peculiar formation of fine laminated colored clays which is spread over the entire valley of the great river, and which Prof. Agassiz had pronounced 'Drift.'" [details]
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