Crommium is an extinct genus of sea snails, marine gastropod molluscs in the family Ampullinidae.

[1] Species within the genus Crommium include:[2] Fossils of the sea snails within this genus have been found in sediments of Europe, United States, Colombia, Somalia and Nigeria from Paleocene to Eocene (age range: 61.7 to 23.03 million years ago).

[2]

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