| Conus adversarius Temporal range: Zanclean-Gelsian | |
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| A specimen of Conus adversarius; note the sinistral shape of the shell, which is unique to the species. | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Neogastropoda |
| Family: | Conidae |
| Genus: | Conus |
| Species: | †C. adversarius |
| Binomial name | |
| Conus adversarius Conrad, 1840 | |
Conus adversarius is an extinct species of Conus, a venomous sea snail. The sea snail lived in the southeastern United States. The species lived for over 4 million years in the Pliocene. The species died out in the ice age.
