Alvania montensis
Alvania montensis is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.[1] DescriptionThe length of the shell attains 2.2 mm, its diameter 1.25 mm.
DistributionFossils of this marine species were found in Montian (Paleocene) strata near Mons, Belgium. References
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