| Crommium Temporal range: | |
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| Fossil shell of Crommium ferrugineum | |
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| Genus: | Crommium Cossmann 1888 |
Crommium is an extinct genus of sea snails, marine gastropod mollusks in the family Naticidae, the moon snails.
Species within the genus Crommium include: [1]
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). [1]
Nucula is a genus of very small saltwater clams. They are part of the family Nuculidae.
Duplicaria is a genus of sea snails, marine gastropod mollusks in the family Terebridae, the auger snails.
Eulimidae is a family of very small parasitic sea snails, marine gastropod mollusks in the superfamily Vanikoroidea.
Hippeutis is a genus of minute air-breathing freshwater snails, aquatic pulmonate gastropod mollusks or micromollusks in the family Planorbidae, the ramshorn snails.
Clea is a genus of freshwater snails with opercula, aquatic gastropod mollusks in the subfamily Anentominae of the family Nassariidae, a family, almost all of the rest of which are marine.
Eoacmaea is a genus of sea snails or true limpets, marine gastropod mollusks in the subclass Patellogastropoda, the true limpets.
Euplica is a genus of sea snails, marine gastropod mollusks in the family Columbellidae, the dove snails.
Bedeva is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Maculotriton is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Semiricinula is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Vexilla is a genus of sea snails, marine gastropod mollusks in the family Muricidae, the murex snails or rock snails.
Mesalia is a genus of sea snails, marine gastropod mollusks in the family Turritellidae.
Cryptonatica is a genus of predatory sea snails, marine gastropod mollusks in the family Naticidae, the moon snails.
Galeodea is a genus of large sea snails, marine gastropod mollusks in the subfamily Cassinae of the family Cassidae.
Leptoconchus is a genus of medium-sized sea snails, marine gastropod mollusks in the family Muricidae, subfamily Coralliophilinae, the coral snails or coral shells.
Octomarginula is a genus of sea snails or limpets, marine gastropod mollusks in the family Fissurellidae, the keyhole limpets and slit limpets.
Eoconus is an extinct genus of sea snails, marine gastropod mollusks, in the family Conidae, the cone snails and their allies.
Hemiconus is an extinct genus of sea snails, marine gastropod mollusks, in the family Conidae the cone snails and their allies.
Metaconulus is an extinct genus of sea snails, marine gastropod mollusks, in the family Calliostomatidae within the superfamily Trochoidea, the top snails, turban snails and their allies.
Tylothais is a genus of sea snails, marine gastropod mollusks, in the family Muricidae, the murex snails or rock snails.