Calotrophon ostrearum

{{Short description|Species of gastropod}}

{{Use dmy dates|date=August 2020}}

{{Speciesbox

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| taxon = Calotrophon ostrearum

| authority = (Conrad, 1846)

| synonyms_ref =

| synonyms = Calotrophon emilyae Petuch, 1988
Fusus mexicanus Reeve, 1848
Murex ostrearum Conrad, 1846
Muricidea floridana var. attenuata Dall, 1890
Urosalpinx floridana Conrad, 1869

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Calotrophon ostrearum, common name the "mauve-mouth drill", is a species of small, predatory sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.{{WRMS species|406356|Calotrophon ostrearum (Conrad, 1846)}}