Poleumita
Encyclopedia
Poleumita is an extinct genus
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of medium-sized sea snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...

s, fossil
Fossil
Fossils are the preserved remains or traces of animals , plants, and other organisms from the remote past...

 marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...

 gastropods in the family Euomphalidae
Euomphalidae
Euomphalidae is an extinct family of Paleozoic molluscs which may possibly be gastropods with anisostrophically coiled shells .- Genera :Genera in the family Euomphalidae include:...

. They are known from the Silurian
Silurian
The Silurian is a geologic period and system that extends from the end of the Ordovician Period, about 443.7 ± 1.5 Mya , to the beginning of the Devonian Period, about 416.0 ± 2.8 Mya . As with other geologic periods, the rock beds that define the period's start and end are well identified, but the...

period.

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